diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..39d8feb
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,5 @@
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+[alias]
+nifi-migrate = ["run", "--bin", "nifi-migrate", "--"]
diff --git a/.github/workflows/nifi_migrate_pr.yaml b/.github/workflows/nifi_migrate_pr.yaml
new file mode 100644
index 0000000..712bd70
--- /dev/null
+++ b/.github/workflows/nifi_migrate_pr.yaml
@@ -0,0 +1,66 @@
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+---
+name: Build nifi-migrate
+
+on:
+  pull_request:
+    paths:
+      - ".github/workflows/nifi_migrate_pr.yaml"
+      - "rust-toolchain.toml"
+      - "src/**.rs"
+      - "Cargo.*"
+
+env:
+  RUST_VERSION: 1.87.0
+
+jobs:
+  # This job is always run to ensure we don't miss any new upstream advisories
+  cargo-deny:
+    name: Run cargo-deny
+    runs-on: ubuntu-latest
+    # Prevent sudden announcement of a new advisory from failing CI
+    continue-on-error: ${{ matrix.checks == 'advisories' }}
+    strategy:
+      matrix:
+        checks:
+          - advisories
+          - bans licenses sources
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+
+      - name: Run cargo-deny
+        uses: EmbarkStudios/cargo-deny-action@f2ba7abc2abebaf185c833c3961145a3c275caad # v2.0.13
+        with:
+          command: check ${{ matrix.checks }}
+
+  build:
+    name: Build nifi-migrate
+    needs:
+      - cargo-deny
+    strategy:
+      fail-fast: false
+      matrix:
+        targets:
+          - { target: aarch64-unknown-linux-gnu, os: ubuntu-24.04-arm }
+          - { target: x86_64-unknown-linux-gnu, os: ubuntu-latest }
+          - { target: aarch64-apple-darwin, os: macos-latest }
+    runs-on: ${{ matrix.targets.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+
+      - uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9
+        with:
+          toolchain: ${{ env.RUST_VERSION }}
+          targets: ${{ matrix.targets.target }}
+
+      - name: Build Binary
+        env:
+          TARGET: ${{ matrix.targets.target }}
+        run: cargo build --target "$TARGET" --package nifi-migrate
diff --git a/.github/workflows/nifi_migrate_release.yaml b/.github/workflows/nifi_migrate_release.yaml
new file mode 100644
index 0000000..fbabe36
--- /dev/null
+++ b/.github/workflows/nifi_migrate_release.yaml
@@ -0,0 +1,61 @@
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+---
+name: Release nifi-migrate
+
+on:
+  push:
+    tags:
+      - "nifi-migrate-[0-9]+.[0-9]+.[0-9]+**"
+
+env:
+  RUST_VERSION: 1.87.0
+
+jobs:
+  create-release:
+    name: Create Draft Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create Draft Release
+        uses: softprops/action-gh-release@72f2c25fcb47643c292f7107632f7a47c1df5cd8 # v2.3.2
+        with:
+          draft: true
+
+  build:
+    name: Build nifi-migrate
+    needs:
+      - create-release
+    strategy:
+      fail-fast: false
+      matrix:
+        targets:
+          - { target: aarch64-unknown-linux-gnu, os: ubuntu-24.04-arm }
+          - { target: x86_64-unknown-linux-gnu, os: ubuntu-latest }
+          - { target: aarch64-apple-darwin, os: macos-latest }
+    runs-on: ${{ matrix.targets.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+
+      - uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9
+        with:
+          toolchain: ${{ env.RUST_VERSION }}
+          targets: ${{ matrix.targets.target }}
+
+      - name: Build Binary
+        env:
+          TARGET: ${{ matrix.targets.target }}
+        run: cargo build --target "$TARGET" --release --package nifi-migrate
+
+      - name: Rename Binary
+        env:
+          TARGET: ${{ matrix.targets.target }}
+        run: mv "target/$TARGET/release/nifi-migrate" "nifi-migrate-$TARGET"
+
+      - name: Upload Artifact to Release
+        uses: softprops/action-gh-release@72f2c25fcb47643c292f7107632f7a47c1df5cd8 # v2.3.2
+        with:
+          draft: false
+          files: nifi-migrate-${{ matrix.targets.target }}
diff --git a/.github/workflows/pre_commit.yaml b/.github/workflows/pre_commit.yaml
new file mode 100644
index 0000000..f63c36f
--- /dev/null
+++ b/.github/workflows/pre_commit.yaml
@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+---
+name: pre-commit
+
+on:
+  pull_request:
+
+env:
+  RUST_TOOLCHAIN_VERSION: "1.87.0"
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+          fetch-depth: 0
+      - uses: stackabletech/actions/run-pre-commit@9a70678a34ec4e4f6927d0f8842b74aa857a9577 # v0.10.2
+        with:
+          rust: ${{ env.RUST_TOOLCHAIN_VERSION }}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..11d2e57
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+# Rust build artifacts
+/target
+Cargo.lock
+
+# Claude Code local settings
+.claude/
diff --git a/.markdownlint.yaml b/.markdownlint.yaml
new file mode 100644
index 0000000..3b47e81
--- /dev/null
+++ b/.markdownlint.yaml
@@ -0,0 +1,27 @@
+---
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+# All defaults or options can be checked here:
+# https://github.com/DavidAnson/markdownlint/blob/main/schema/.markdownlint.yaml
+
+# Default state for all rules
+default: true
+
+# MD013/line-length - Line length
+MD013:
+  # Number of characters
+  line_length: 9999
+  # Number of characters for headings
+  heading_line_length: 9999
+  # Number of characters for code blocks
+  code_block_line_length: 9999
+
+# MD024/no-duplicate-heading/no-duplicate-header - Multiple headings with the same content
+MD024:
+  # Only check sibling headings
+  siblings_only: true
+
+# MD033/no-inline-html Inline HTML
+MD033:
+  allowed_elements: [details, summary, img]
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..e52e93c
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,59 @@
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+---
+fail_fast: false
+exclude: \.patch$
+
+default_language_version:
+  node: system
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: 3e8a8703264a2f4a69428a0aa4dcb512790b2c8c # 6.0.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: detect-aws-credentials
+        args: ["--allow-missing-credentials"]
+      - id: detect-private-key
+
+  - repo: https://github.com/adrienverge/yamllint
+    rev: 79a6b2b1392eaf49cdd32ac4f14be1a809bbd8f7 # 1.37.1
+    hooks:
+      - id: yamllint
+
+  - repo: https://github.com/igorshubovych/markdownlint-cli
+    rev: 192ad822316c3a22fb3d3cc8aa6eafa0b8488360 # 0.45.0
+    hooks:
+      - id: markdownlint
+
+  - repo: https://github.com/rhysd/actionlint
+    rev: 03d0035246f3e81f36aed592ffb4bebf33a03106 # 1.7.7
+    hooks:
+      - id: actionlint
+
+  - repo: local
+    hooks:
+      - id: cargo-test
+        name: cargo-test
+        language: system
+        entry: cargo test
+        stages: [pre-commit, pre-merge-commit]
+        pass_filenames: false
+        files: \.rs$|Cargo\.(toml|lock)
+
+      - id: cargo-rustfmt
+        name: cargo-rustfmt
+        language: system
+        entry: cargo fmt --all -- --check
+        stages: [pre-commit, pre-merge-commit]
+        pass_filenames: false
+        files: \.rs$
+
+      - id: cargo-clippy
+        name: cargo-clippy
+        language: system
+        entry: cargo clippy --all-targets -- -D warnings
+        stages: [pre-commit, pre-merge-commit]
+        pass_filenames: false
+        files: \.rs$
diff --git a/.yamllint.yaml b/.yamllint.yaml
new file mode 100644
index 0000000..ada065d
--- /dev/null
+++ b/.yamllint.yaml
@@ -0,0 +1,17 @@
+---
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+extends: default
+
+
+rules:
+  line-length: disable
+  truthy:
+    check-keys: false
+  comments:
+    min-spaces-from-content: 1  # Needed due to https://github.com/adrienverge/yamllint/issues/443
+  indentation: disable
+  braces:
+    max-spaces-inside: 1
+    max-spaces-inside-empty: 0
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..df05029
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,69 @@
+<!--
+SPDX-FileCopyrightText: 2025 Stackable GmbH
+SPDX-License-Identifier: Apache-2.0
+-->
+
+# Claude Code Instructions
+
+Always read the README.md file to understand what this project is about.
+
+When making changes to this project, always run the following checks in order:
+
+1. **Format code**: `cargo fmt`
+2. **Lint code**: `cargo clippy --all-targets -- -D warnings`
+3. **Run tests**: `cargo test`
+4. **Check REUSE compliance**: `reuse lint`
+5. **Lint GitHub Actions** (after changes to `.github/workflows/*.yaml`): `actionlint`
+6. **Check dependencies** (after changes to `Cargo.toml` or `Cargo.lock`): `cargo deny check`
+
+All checks must pass before considering the work complete.
+
+## Convenient Commands
+
+You can run all checks at once using:
+
+- `just all` - Run all checks individually (fmt, clippy, test, reuse, actionlint, deny)
+- `just pre-commit` - Run pre-commit hooks on all files
+
+To install pre-commit git hooks:
+
+- `just pre-commit-install`
+
+## Project-Specific Notes
+
+- This project follows FSFE REUSE 3.3 specification
+- All source files must have SPDX headers
+- Files covered by `REUSE.toml` don't need individual headers
+- License: Apache-2.0
+- Copyright holder: Stackable GmbH
+- All full sentences in comments (`//` and `///`) must end with a period
+
+## Adding New Migration Rules
+
+When adding new migration rules, follow these steps in order:
+
+1. Create a new file in `src/migration/rules/` (e.g., `my_rule.rs`)
+2. Implement the `MigrationRule` trait with SPDX headers
+   - Rules can apply to processors, controller services, or both
+   - The trait checks for `type` and `bundle` fields, not component type
+3. Add the module to `src/migration/rules.rs` and export it
+4. Register it in `Migrator::default()` in `src/migration.rs`
+   - Add to the `rules` vec with appropriate comment (processor/controller service)
+5. Add comprehensive unit tests in the rule file
+   - Test both the rule in isolation and in the full migration flow
+6. **Update README.md** in the "Supported Migrations" section:
+   - Add a new subsection describing the migration
+   - Include the old and new type/bundle values
+   - Explain why the migration is needed (link to JIRA ticket if available)
+7. Run all checks listed above (fmt, clippy, test, reuse lint)
+
+All steps must be completed before considering the migration rule complete.
+
+## Project Structure
+
+- `src/main.rs` - CLI entry point, displays version detection and migration results
+- `src/cli.rs` - Command-line argument parsing with clap
+- `src/migration.rs` - Core migration engine with `Migrator` struct
+- `src/migration/rules.rs` - Module declarations for all migration rules
+- `src/migration/rules/*.rs` - Individual migration rule implementations
+- There might be other files but these are the core ones
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..6871000
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,342 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "anstream"
+version = "0.6.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e231f6134f61b71076a3eab506c379d4f36122f2af15a9ff04415ea4c3339e2"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e0633414522a32ffaac8ac6cc8f748e090c5717661fddeea04219e2344f5f2a"
+dependencies = [
+ "anstyle",
+ "once_cell_polyfill",
+ "windows-sys",
+]
+
+[[package]]
+name = "anyhow"
+version = "1.0.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a23eb6b1614318a8071c9b2521f36b424b2c83db5eb3a0fead4a6c0809af6e61"
+
+[[package]]
+name = "clap"
+version = "4.5.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2134bb3ea021b78629caa971416385309e0131b351b25e01dc16fb54e1b5fae"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.5.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2ba64afa3c0a6df7fa517765e31314e983f51dda798ffba27b988194fb65dc9"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.5.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbfd7eae0b0f1a6e63d4b13c9c478de77c2eb546fba158ad50b4203dc24b9f9c"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "clap_lex"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b94f61472cee1439c0b966b47e3aca9ae07e45d070759512cd390ea2bebc6675"
+
+[[package]]
+name = "colorchoice"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
+
+[[package]]
+name = "diff"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56254986775e3233ffa9c4d7d3faaf6d36a2c09d30b20687e9f88bc8bafc16c8"
+
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
+[[package]]
+name = "is_terminal_polyfill"
+version = "1.70.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
+
+[[package]]
+name = "itoa"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
+
+[[package]]
+name = "memchr"
+version = "2.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
+
+[[package]]
+name = "nifi-migrate"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "clap",
+ "pretty_assertions",
+ "serde_json",
+]
+
+[[package]]
+name = "once_cell_polyfill"
+version = "1.70.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4895175b425cb1f87721b59f0f286c2092bd4af812243672510e1ac53e2e0ad"
+
+[[package]]
+name = "pretty_assertions"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ae130e2f271fbc2ac3a40fb1d07180839cdbbe443c7a27e1e3c13c5cac0116d"
+dependencies = [
+ "diff",
+ "yansi",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.101"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89ae43fd86e4158d6db51ad8e2b80f313af9cc74f5c0e03ccb87de09998732de"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce25767e7b499d1b604768e7cde645d14cc8584231ea6b295e9c9eb22c02e1d1"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "ryu"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
+
+[[package]]
+name = "serde"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
+dependencies = [
+ "serde_core",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.145"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "402a6f66d8c709116cf22f558eab210f5a50187f702eb4d7e5ef38d9a7f1c79c"
+dependencies = [
+ "itoa",
+ "memchr",
+ "ryu",
+ "serde",
+ "serde_core",
+]
+
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
+[[package]]
+name = "syn"
+version = "2.0.106"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ede7c438028d4436d71104916910f5bb611972c5cfd7f89b8300a8186e6fada6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f63a545481291138910575129486daeaf8ac54aee4387fe7906919f7830c7d9d"
+
+[[package]]
+name = "utf8parse"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
+
+[[package]]
+name = "windows-link"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
+
+[[package]]
+name = "windows-sys"
+version = "0.60.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2f500e4d28234f72040990ec9d39e3a6b950f9f22d3dba18416c35882612bcb"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.53.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4945f9f551b88e0d65f3db0bc25c33b8acea4d9e41163edf90dcd0b19f9069f3"
+dependencies = [
+ "windows-link",
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9d8416fa8b42f5c947f8482c43e7d89e73a173cead56d044f6a56104a6d1b53"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9d782e804c2f632e395708e99a94275910eb9100b2114651e04744e9b125006"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "960e6da069d81e09becb0ca57a65220ddff016ff2d6af6a223cf372a506593a3"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa7359d10048f68ab8b09fa71c3daccfb0e9b559aed648a8f95469c27057180c"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e7ac75179f18232fe9c285163565a57ef8d3c89254a30685b57d83a38d326c2"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c3842cdd74a865a8066ab39c8a7a473c0778a3f29370b5fd6b4b9aa7df4a499"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ffa179e2d07eee8ad8f57493436566c7cc30ac536a3379fdf008f47f6bb7ae1"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
+
+[[package]]
+name = "yansi"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfe53a6657fd280eaa890a3bc59152892ffa3e30101319d168b781ed6529b049"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..b45996e
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "nifi-migrate"
+version = "0.1.0"
+edition = "2024"
+license = "Apache-2.0"
+authors = ["Stackable GmbH <info@stackable.tech>"]
+description = "A CLI tool for migrating Apache NiFi flow.json files between versions"
+repository = "https://github.com/stackabletech/nifi-migrate"
+
+[dependencies]
+clap = { version = "4.5", features = ["derive"] }
+serde_json = "1.0"
+anyhow = "1.0"
+
+[dev-dependencies]
+pretty_assertions = "1.4"
diff --git a/Justfile b/Justfile
new file mode 100644
index 0000000..be2d10e
--- /dev/null
+++ b/Justfile
@@ -0,0 +1,49 @@
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+# Run all checks (same as pre-commit)
+all: fmt clippy test reuse actionlint deny
+
+# Format code
+fmt:
+    cargo fmt
+
+# Lint code
+clippy:
+    cargo clippy --all-targets -- -D warnings
+
+# Run tests
+test:
+    cargo test
+
+# Check REUSE compliance
+reuse:
+    reuse lint
+
+# Lint GitHub Actions workflows
+actionlint:
+    actionlint
+
+# Check dependencies
+deny:
+    cargo deny check
+
+# Run pre-commit hooks on all files
+pre-commit:
+    pre-commit run \
+      --all-files \
+      --verbose \
+      --show-diff-on-failure \
+      --color always
+
+# Install pre-commit hooks
+pre-commit-install:
+    pre-commit install
+
+# Build release binary
+build:
+    cargo build --release
+
+# Run the tool
+run input output="flow-migrated.json" *args="":
+    cargo run -- "{{input}}" "{{output}}" {{args}}
diff --git a/LICENSE b/LICENSE
index 261eeb9..7fb5aea 100644
--- a/LICENSE
+++ b/LICENSE
@@ -153,7 +153,7 @@
    8. Limitation of Liability. In no event and under no legal theory,
       whether in tort (including negligence), contract, or otherwise,
       unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
+      negligent acts) or agreed in writing, shall any Contributor be
       liable to You for damages, including any direct, indirect, special,
       incidental, or consequential damages of any character arising as a
       result of this License or out of the use or inability to use the
@@ -162,7 +162,7 @@
       other commercial damages or losses), even if such Contributor
       has been advised of the possibility of such damages.
 
-   9. Accepting Warranty or Additional Liability. While redistributing
+   9. Accepting Warranty or Additional Support. While redistributing
       the Work or Derivative Works thereof, You may choose to offer,
       and charge a fee for, acceptance of support, warranty, indemnity,
       or other liability obligations and/or rights consistent with this
@@ -174,28 +174,3 @@
       of your accepting any such warranty or additional liability.
 
    END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
-      replaced with your own identifying information. (Don't include
-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
-      same "printed page" as the copyright notice for easier
-      identification within third-party archives.
-
-   Copyright [yyyy] [name of copyright owner]
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
diff --git a/LICENSES/Apache-2.0.txt b/LICENSES/Apache-2.0.txt
new file mode 100644
index 0000000..137069b
--- /dev/null
+++ b/LICENSES/Apache-2.0.txt
@@ -0,0 +1,73 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
+
+"Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
+
+"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
+
+"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
+
+"Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
+
+"Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
+
+"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
+
+"Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution."
+
+"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:
+
+     (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and
+
+     (b) You must cause any modified files to carry prominent notices stating that You changed the files; and
+
+     (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and
+
+     (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License.
+
+     You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!)  The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives.
+
+Copyright [yyyy] [name of copyright owner]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..6cee114
--- /dev/null
+++ b/README.md
@@ -0,0 +1,120 @@
+<!--
+SPDX-FileCopyrightText: 2025 Stackable GmbH
+SPDX-License-Identifier: Apache-2.0
+-->
+
+# nifi-migrate
+
+A Rust CLI tool for migrating Apache NiFi flow.json files between versions.
+
+## Supported Migrations
+
+### JoltTransformJSON Processor
+
+- **Type**: `org.apache.nifi.processors.standard.JoltTransformJSON` → `org.apache.nifi.processors.jolt.JoltTransformJSON`
+- **Bundle artifact**: `nifi-standard-nar` → `nifi-jolt-nar`
+- **Reason**: In NiFi 2.x, Jolt processors were moved to a separate bundle
+- **Reference**: [NIFI-12554](https://issues.apache.org/jira/browse/NIFI-12554)
+
+### JoltTransformRecord Processor
+
+- **Type**: `org.apache.nifi.processors.jolt.record.JoltTransformRecord` → `org.apache.nifi.processors.jolt.JoltTransformRecord`
+- **Bundle artifact**: `nifi-jolt-record-nar` → `nifi-jolt-nar`
+- **Reason**: Consolidated into the main jolt bundle
+- **Reference**: [NIFI-12554](https://issues.apache.org/jira/browse/NIFI-12554)
+
+## Build
+
+```bash
+cargo build --release
+```
+
+The binary will be available at `target/release/nifi-migrate`
+
+## Usage
+
+Basic usage:
+
+```bash
+nifi-migrate flow.json flow-migrated.json
+```
+
+Or using the cargo alias:
+
+```bash
+cargo nifi-migrate flow.json flow-migrated.json
+```
+
+With pretty-printed JSON output:
+
+```bash
+nifi-migrate flow.json flow-migrated.json --pretty
+```
+
+### Options
+
+Call `nifi-migrate --help` to see all its options.
+
+## Important Notes
+
+### JSON Formatting
+
+> [!WARNING]
+> The output file will be reformatted. By default, output is compact (single line). Use `--pretty` flag for human-readable formatting with indentation.
+
+The order of JSON keys in the output may also change as the file is parsed and reserialized. While this doesn't affect NiFi's ability to read the file, it may make git diffs larger.
+
+The input file is never modified.
+
+## Adding New Migration Rules
+
+To add a new migration rule:
+
+1. look at one of the existing ones in `src/rules` and follow the pattern (basically: Implement the `MigrationRule` trait).
+2. Add your rule to `src/rules/rules.rs`:
+
+    ```rust
+    mod my_rule;
+    pub use my_rule::MyMigrationRule;
+    ```
+
+3. Register it in `Migrator::new()` in `src/migration.rs`:
+
+    ```rust
+    pub fn new() -> Self {
+        Self {
+            rules: vec![
+                Box::new(JoltTransformMigration),
+                Box::new(MyMigrationRule),  // Add your rule here
+            ],
+        }
+    }
+    ```
+
+## License
+
+Licensed under the Apache License, Version 2.0. See [LICENSE](LICENSE) for details.
+
+## Contributing
+
+Contributions are welcome! Please ensure:
+
+- No new clippy lints (`cargo clippy --all-targets -- -D warnings`)
+- All tests pass (`cargo test`)
+- Code is formatted (`cargo fmt`)
+- REUSE compliance (`reuse lint`)
+- Add tests for new migration rules
+
+### Running All Checks
+
+You can run all checks at once using:
+
+```bash
+just all
+```
+
+And run pre-commit hooks:
+
+```bash
+just pre-commit
+```
diff --git a/REUSE.toml b/REUSE.toml
new file mode 100644
index 0000000..fb5ca5f
--- /dev/null
+++ b/REUSE.toml
@@ -0,0 +1,12 @@
+version = 1
+
+[[annotations]]
+path = [
+  "Cargo.toml",
+  "Cargo.lock",
+  ".gitignore",
+  "**/*.json",
+]
+precedence = "aggregate"
+SPDX-FileCopyrightText = "2025 Stackable GmbH"
+SPDX-License-Identifier = "Apache-2.0"
diff --git a/deny.toml b/deny.toml
new file mode 100644
index 0000000..d0a31ed
--- /dev/null
+++ b/deny.toml
@@ -0,0 +1,60 @@
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+# This file is the source of truth for all our repos!
+# This includes repos not templated by operator-templating, please copy/paste the file for this repos.
+
+# TIP: Use "cargo deny check" to check if everything is fine
+
+[graph]
+targets = [
+  { triple = "x86_64-unknown-linux-gnu" },
+  { triple = "aarch64-unknown-linux-gnu" },
+  { triple = "x86_64-unknown-linux-musl" },
+  { triple = "aarch64-apple-darwin" },
+  { triple = "x86_64-apple-darwin" },
+]
+
+[advisories]
+yanked = "deny"
+
+[bans]
+multiple-versions = "allow"
+
+[licenses]
+unused-allowed-license = "allow"
+confidence-threshold = 1.0
+allow = [
+  "Apache-2.0",
+  "BSD-2-Clause",
+  "BSD-3-Clause",
+  "CC0-1.0",
+  "ISC",
+  "LicenseRef-ring",
+  "LicenseRef-webpki",
+  "MIT",
+  "MPL-2.0",
+  "OpenSSL",           # Needed for the ring and/or aws-lc-sys crate. See https://github.com/stackabletech/operator-templating/pull/464 for details
+  "Unicode-3.0",
+  "Unicode-DFS-2016",
+  "Zlib",
+  "Unlicense",
+]
+private = { ignore = true }
+
+[[licenses.clarify]]
+name = "ring"
+expression = "LicenseRef-ring"
+license-files = [{ path = "LICENSE", hash = 0xbd0eed23 }]
+
+[[licenses.clarify]]
+name = "webpki"
+expression = "LicenseRef-webpki"
+license-files = [{ path = "LICENSE", hash = 0x001c7e6c }]
+
+[sources]
+unknown-registry = "deny"
+unknown-git = "deny"
+
+[sources.allow-org]
+github = ["stackabletech"]
diff --git a/renovate.json b/renovate.json
new file mode 100644
index 0000000..43b32fb
--- /dev/null
+++ b/renovate.json
@@ -0,0 +1,7 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "github>stackabletech/.github:renovate-config",
+    "docker:pinDigests"
+  ]
+}
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..3a7d4c2
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Stackable GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+[toolchain]
+channel = "1.87.0"
+profile = "default"
diff --git a/src/cli.rs b/src/cli.rs
new file mode 100644
index 0000000..faf48ce
--- /dev/null
+++ b/src/cli.rs
@@ -0,0 +1,27 @@
+// SPDX-FileCopyrightText: 2025 Stackable GmbH
+// SPDX-License-Identifier: Apache-2.0
+
+use clap::{Parser, ValueHint};
+use std::path::PathBuf;
+
+#[derive(Parser)]
+#[command(author, version, about)]
+pub struct Cli {
+    /// Input flow.json file.
+    #[arg(value_hint = ValueHint::FilePath)]
+    pub input: PathBuf,
+
+    /// Output flow.json file.
+    #[arg(value_hint = ValueHint::FilePath)]
+    pub output: PathBuf,
+
+    /// Pretty-print the output JSON (default: compact).
+    #[arg(short, long)]
+    pub pretty: bool,
+
+    /// Format-only mode: rewrite the file without applying migrations.
+    /// This can help in diffing a file to see the changes as the formatting will have changed
+    /// from the input. This way you'll have two consistently formatted files.
+    #[arg(short, long)]
+    pub format_only: bool,
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..fc1af2f
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,42 @@
+// SPDX-FileCopyrightText: 2025 Stackable GmbH
+// SPDX-License-Identifier: Apache-2.0
+
+mod cli;
+mod migration;
+
+use anyhow::Result;
+use clap::Parser;
+use cli::Cli;
+use migration::{MigrationChange, Migrator};
+
+fn main() -> Result<()> {
+    let args = Cli::parse();
+
+    let migrator = Migrator::default();
+    // Should we get more arguments we can pass along a struct...this kinda grew organically :)
+    let changes =
+        migrator.migrate_file(&args.input, &args.output, args.pretty, args.format_only)?;
+
+    if args.format_only {
+        println!("Format-only mode: File reformatted without migrations.");
+        println!("Output written to: {}", args.output.display());
+    } else if changes.is_empty() {
+        println!("No migrations needed.");
+    } else {
+        println!("Migration complete. Changes made:");
+
+        for MigrationChange {
+            processor_name,
+            processor_id,
+            rule_description,
+            ..
+        } in &changes
+        {
+            println!("  - {processor_name} ({processor_id}): {rule_description}");
+        }
+
+        println!("\nOutput written to: {}", args.output.display());
+    }
+
+    Ok(())
+}
diff --git a/src/migration.rs b/src/migration.rs
new file mode 100644
index 0000000..169ccee
--- /dev/null
+++ b/src/migration.rs
@@ -0,0 +1,290 @@
+// SPDX-FileCopyrightText: 2025 Stackable GmbH
+// SPDX-License-Identifier: Apache-2.0
+
+mod rules;
+
+use anyhow::{Context, Result};
+use rules::{JoltTransformMigration, JoltTransformRecordMigration, MigrationRule};
+use serde_json::Value;
+use std::fs;
+use std::path::Path;
+
+/// Represents a change that would be made during migration.
+#[derive(Debug, Clone)]
+pub struct MigrationChange {
+    pub processor_id: String,
+    pub processor_name: String,
+    pub rule_description: String,
+}
+
+/// Main migration engine.
+pub struct Migrator {
+    rules: Vec<Box<dyn MigrationRule>>,
+}
+
+impl Default for Migrator {
+    fn default() -> Self {
+        Self {
+            rules: vec![
+                Box::new(JoltTransformMigration),
+                Box::new(JoltTransformRecordMigration),
+            ],
+        }
+    }
+}
+
+impl Migrator {
+    /// Migrate a flow JSON file.
+    pub fn migrate_file(
+        &self,
+        input_path: &Path,
+        output_path: &Path,
+        pretty: bool,
+        format_only: bool,
+    ) -> Result<Vec<MigrationChange>> {
+        // Validate input exists
+        if !input_path.exists() {
+            anyhow::bail!("Input file does not exist: {}", input_path.display());
+        }
+
+        // Warn if input and output are the same
+        let canonical_input = input_path
+            .canonicalize()
+            .with_context(|| format!("Failed to resolve input path: {}", input_path.display()))?;
+
+        if let Ok(canonical_output) = output_path.canonicalize() {
+            if canonical_input == canonical_output {
+                anyhow::bail!(
+                    "Input and output paths are the same. This would overwrite the original file."
+                );
+            }
+        }
+
+        // Validate output directory exists
+        if let Some(parent) = output_path.parent() {
+            if !parent.as_os_str().is_empty() && !parent.exists() {
+                anyhow::bail!("Output directory does not exist: {}", parent.display());
+            }
+        }
+
+        let file = fs::File::open(input_path)
+            .with_context(|| format!("Failed to open input file: {}", input_path.display()))?;
+        let reader = std::io::BufReader::new(file);
+
+        let mut flow: Value = serde_json::from_reader(reader)
+            .with_context(|| format!("Failed to parse JSON from: {}", input_path.display()))?;
+
+        let changes = if format_only {
+            Vec::new()
+        } else {
+            self.migrate_flow(&mut flow)
+        };
+
+        // In format-only mode, always write output even if no migrations
+        // In normal mode, only write if changes were made
+        if format_only || !changes.is_empty() {
+            let output = if pretty {
+                serde_json::to_string_pretty(&flow)
+            } else {
+                serde_json::to_string(&flow)
+            }
+            .context("Failed to serialize output JSON")?;
+
+            fs::write(output_path, output).with_context(|| {
+                format!("Failed to write output file: {}", output_path.display())
+            })?;
+        }
+
+        Ok(changes)
+    }
+
+    /// Migrate a flow JSON value in-place.
+    fn migrate_flow(&self, flow: &mut Value) -> Vec<MigrationChange> {
+        let mut changes = Vec::new();
+        self.process_value_with_context(flow, None, &mut changes);
+        changes
+    }
+
+    /// Recursively process a JSON value with parent key context.
+    /// The NiFi JSON is not very deep so recursive should not cause any issues here.
+    fn process_value_with_context(
+        &self,
+        value: &mut Value,
+        parent_key: Option<&str>,
+        changes: &mut Vec<MigrationChange>,
+    ) {
+        match value {
+            Value::Object(map) => {
+                // Check if this object is a processor (but not a controller service)
+                // Controller services have the same structure as processors (type + bundle)
+                // but appear under "controllerServices" key instead of "processors" key
+                // This entire matching thing (as well as the migration rules) can be made smarter
+                // as needed. For now, we only have two rules and both are for processors so it's
+                // fine as is.
+                let is_processor = map.contains_key("type")
+                    && map.contains_key("bundle")
+                    && parent_key != Some("controllerServices");
+
+                if is_processor {
+                    self.process_processor(value, changes);
+                }
+
+                // Recursively process all nested values
+                // Need to re-borrow to avoid double mutable borrow
+                if let Value::Object(map) = value {
+                    for (key, val) in map.iter_mut() {
+                        self.process_value_with_context(val, Some(key), changes);
+                    }
+                }
+            }
+            Value::Array(arr) => {
+                for item in arr.iter_mut() {
+                    self.process_value_with_context(item, parent_key, changes);
+                }
+            }
+            _ => {}
+        }
+    }
+
+    /// Process a single processor object.
+    fn process_processor(&self, processor: &mut Value, changes: &mut Vec<MigrationChange>) {
+        for rule in &self.rules {
+            if rule.applies(processor) && rule.apply(processor) {
+                let processor_id = processor
+                    .get("identifier")
+                    .or_else(|| processor.get("id"))
+                    .and_then(|v| v.as_str())
+                    .unwrap_or("unknown")
+                    .to_owned();
+
+                let processor_name = processor
+                    .get("name")
+                    .and_then(|v| v.as_str())
+                    .unwrap_or("unnamed")
+                    .to_owned();
+
+                changes.push(MigrationChange {
+                    processor_id,
+                    processor_name,
+                    rule_description: rule.description(),
+                });
+            }
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use pretty_assertions::assert_eq;
+    use serde_json::json;
+
+    #[test]
+    fn test_jolt_transform_migration() {
+        let mut processor = json!({
+            "identifier": "test-id-123",
+            "name": "JoltTransform",
+            "type": "org.apache.nifi.processors.standard.JoltTransformJSON",
+            "bundle": {
+                "artifact": "nifi-standard-nar",
+                "group": "org.apache.nifi",
+                "version": "1.25.0"
+            }
+        });
+
+        let rule = JoltTransformMigration;
+        assert!(rule.applies(&processor));
+        assert!(rule.apply(&mut processor));
+
+        assert_eq!(
+            processor.get("type").and_then(|v| v.as_str()),
+            Some("org.apache.nifi.processors.jolt.JoltTransformJSON")
+        );
+        assert_eq!(
+            processor
+                .get("bundle")
+                .and_then(|b| b.get("artifact"))
+                .and_then(|v| v.as_str()),
+            Some("nifi-jolt-nar")
+        );
+    }
+
+    #[test]
+    fn test_nested_process_groups() {
+        let mut flow = json!({
+            "processGroups": [
+                {
+                    "processors": [
+                        {
+                            "identifier": "proc-1",
+                            "name": "Jolt1",
+                            "type": "org.apache.nifi.processors.standard.JoltTransformJSON",
+                            "bundle": {
+                                "artifact": "nifi-standard-nar"
+                            }
+                        }
+                    ],
+                    "processGroups": [
+                        {
+                            "processors": [
+                                {
+                                    "identifier": "proc-2",
+                                    "name": "Jolt2",
+                                    "type": "org.apache.nifi.processors.standard.JoltTransformJSON",
+                                    "bundle": {
+                                        "artifact": "nifi-standard-nar"
+                                    }
+                                }
+                            ]
+                        }
+                    ]
+                }
+            ]
+        });
+
+        let migrator = Migrator::default();
+        let changes = migrator.migrate_flow(&mut flow);
+
+        assert_eq!(changes.len(), 2);
+        assert!(changes.iter().any(|c| c.processor_id == "proc-1"));
+        assert!(changes.iter().any(|c| c.processor_id == "proc-2"));
+    }
+
+    #[test]
+    fn test_only_migrates_jolt_processors() {
+        let mut flow = json!({
+            "processors": [
+                {
+                    "identifier": "other-proc",
+                    "name": "SomeOtherProcessor",
+                    "type": "org.apache.nifi.processors.standard.LogAttribute",
+                    "bundle": {
+                        "artifact": "nifi-standard-nar"
+                    }
+                },
+                {
+                    "identifier": "jolt-proc",
+                    "name": "JoltProcessor",
+                    "type": "org.apache.nifi.processors.standard.JoltTransformJSON",
+                    "bundle": {
+                        "artifact": "nifi-standard-nar"
+                    }
+                }
+            ]
+        });
+
+        let migrator = Migrator::default();
+        let changes = migrator.migrate_flow(&mut flow);
+
+        assert_eq!(changes.len(), 1);
+        assert_eq!(changes[0].processor_id, "jolt-proc");
+
+        // Verify other processor unchanged
+        assert_eq!(
+            flow["processors"][0]["bundle"]["artifact"],
+            "nifi-standard-nar"
+        );
+        // Verify jolt processor changed
+        assert_eq!(flow["processors"][1]["bundle"]["artifact"], "nifi-jolt-nar");
+    }
+}
diff --git a/src/migration/rules.rs b/src/migration/rules.rs
new file mode 100644
index 0000000..0ad7992
--- /dev/null
+++ b/src/migration/rules.rs
@@ -0,0 +1,22 @@
+// SPDX-FileCopyrightText: 2025 Stackable GmbH
+// SPDX-License-Identifier: Apache-2.0
+
+mod jolt_transform;
+mod jolt_transform_record;
+
+pub use jolt_transform::JoltTransformMigration;
+pub use jolt_transform_record::JoltTransformRecordMigration;
+
+use serde_json::Value;
+
+/// Represents a migration rule that can be applied to processors.
+pub trait MigrationRule {
+    /// Check if this rule applies to the given processor.
+    fn applies(&self, processor: &Value) -> bool;
+
+    /// Apply the migration to the processor, returning `true` if changes were made.
+    fn apply(&self, processor: &mut Value) -> bool;
+
+    /// Get a description of what this rule does.
+    fn description(&self) -> String;
+}
diff --git a/src/migration/rules/jolt_transform.rs b/src/migration/rules/jolt_transform.rs
new file mode 100644
index 0000000..cc05bfa
--- /dev/null
+++ b/src/migration/rules/jolt_transform.rs
@@ -0,0 +1,217 @@
+// SPDX-FileCopyrightText: 2025 Stackable GmbH
+// SPDX-License-Identifier: Apache-2.0
+
+use super::MigrationRule;
+use serde_json::Value;
+
+/// Migration rule for JoltTransformJSON processor.
+///
+/// Migrates `org.apache.nifi.processors.standard.JoltTransformJSON` to
+/// `org.apache.nifi.processors.jolt.JoltTransformJSON` and updates the
+/// bundle from `nifi-standard-nar` to `nifi-jolt-nar`.
+///
+/// Reference: <https://issues.apache.org/jira/browse/NIFI-12554>
+pub struct JoltTransformMigration;
+
+impl MigrationRule for JoltTransformMigration {
+    fn applies(&self, processor: &Value) -> bool {
+        processor
+            .get("type")
+            .and_then(|t| t.as_str())
+            .map(|t| t == "org.apache.nifi.processors.standard.JoltTransformJSON")
+            .unwrap_or(false)
+    }
+
+    fn apply(&self, processor: &mut Value) -> bool {
+        let mut changed = false;
+
+        // Update the type field
+        if let Some(type_field) = processor.get_mut("type") {
+            if type_field.as_str() == Some("org.apache.nifi.processors.standard.JoltTransformJSON")
+            {
+                *type_field =
+                    Value::String("org.apache.nifi.processors.jolt.JoltTransformJSON".to_owned());
+                changed = true;
+            }
+        }
+
+        // Update the bundle artifact field
+        if let Some(bundle) = processor.get_mut("bundle") {
+            if let Some(artifact) = bundle.get_mut("artifact") {
+                if artifact.as_str() == Some("nifi-standard-nar") {
+                    *artifact = Value::String("nifi-jolt-nar".to_owned());
+                    changed = true;
+                }
+            }
+        }
+
+        changed
+    }
+
+    fn description(&self) -> String {
+        "Migrate JoltTransformJSON from standard to jolt bundle".to_owned()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use pretty_assertions::assert_eq;
+    use serde_json::json;
+
+    #[test]
+    fn test_jolt_transform_migration() {
+        let mut processor = json!({
+            "identifier": "test-id-123",
+            "name": "JoltTransform",
+            "type": "org.apache.nifi.processors.standard.JoltTransformJSON",
+            "bundle": {
+                "artifact": "nifi-standard-nar",
+                "group": "org.apache.nifi",
+                "version": "1.25.0"
+            }
+        });
+
+        let rule = JoltTransformMigration;
+        assert!(rule.applies(&processor));
+        assert!(rule.apply(&mut processor));
+
+        assert_eq!(
+            processor.get("type").and_then(|v| v.as_str()),
+            Some("org.apache.nifi.processors.jolt.JoltTransformJSON")
+        );
+        assert_eq!(
+            processor
+                .get("bundle")
+                .and_then(|b| b.get("artifact"))
+                .and_then(|v| v.as_str()),
+            Some("nifi-jolt-nar")
+        );
+    }
+
+    #[test]
+    fn test_full_real_world_processor() {
+        let mut processor = json!({
+            "identifier": "347aaa3b-2b3a-30c5-932d-58a109f9478f",
+            "instanceIdentifier": "e70d7d94-e92a-3472-b1c7-338e291af5e9",
+            "name": "JoltTransformJSON",
+            "comments": "",
+            "position": {
+                "x": 3368.0,
+                "y": 200.0
+            },
+            "type": "org.apache.nifi.processors.standard.JoltTransformJSON",
+            "bundle": {
+                "group": "org.apache.nifi",
+                "artifact": "nifi-standard-nar",
+                "version": "1.18.0"
+            },
+            "properties": {},
+            "propertyDescriptors": {
+                "jolt-spec": {
+                    "name": "jolt-spec",
+                    "displayName": "jolt-spec",
+                    "identifiesControllerService": false,
+                    "sensitive": true,
+                    "dynamic": false
+                },
+                "jolt-transform": {
+                    "name": "jolt-transform",
+                    "displayName": "jolt-transform",
+                    "identifiesControllerService": false,
+                    "sensitive": true,
+                    "dynamic": false
+                },
+                "pretty_print": {
+                    "name": "pretty_print",
+                    "displayName": "pretty_print",
+                    "identifiesControllerService": false,
+                    "sensitive": true,
+                    "dynamic": false
+                },
+                "Transform Cache Size": {
+                    "name": "Transform Cache Size",
+                    "displayName": "Transform Cache Size",
+                    "identifiesControllerService": false,
+                    "sensitive": true,
+                    "dynamic": false
+                }
+            },
+            "style": {},
+            "schedulingPeriod": "0 sec",
+            "schedulingStrategy": "TIMER_DRIVEN",
+            "executionNode": "ALL",
+            "penaltyDuration": "30 sec",
+            "yieldDuration": "1 sec",
+            "bulletinLevel": "WARN",
+            "runDurationMillis": 0,
+            "concurrentlySchedulableTaskCount": 1,
+            "autoTerminatedRelationships": ["failure"],
+            "scheduledState": "ENABLED",
+            "retryCount": 10,
+            "retriedRelationships": [],
+            "backoffMechanism": "PENALIZE_FLOWFILE",
+            "maxBackoffPeriod": "10 mins",
+            "componentType": "PROCESSOR",
+            "groupIdentifier": "5e61ca9d-43f8-3176-b706-2404009bcc5b"
+        });
+
+        let rule = JoltTransformMigration;
+
+        // Verify it applies to this processor
+        assert!(
+            rule.applies(&processor),
+            "Rule should apply to JoltTransformJSON processor"
+        );
+
+        // Apply the migration
+        assert!(rule.apply(&mut processor), "Migration should make changes");
+
+        // Verify the type was changed
+        assert_eq!(
+            processor.get("type").and_then(|v| v.as_str()),
+            Some("org.apache.nifi.processors.jolt.JoltTransformJSON"),
+            "Processor type should be updated"
+        );
+
+        // Verify the bundle artifact was changed
+        assert_eq!(
+            processor
+                .get("bundle")
+                .and_then(|b| b.get("artifact"))
+                .and_then(|v| v.as_str()),
+            Some("nifi-jolt-nar"),
+            "Bundle artifact should be updated to nifi-jolt-nar"
+        );
+
+        // Verify other bundle fields remain unchanged
+        assert_eq!(
+            processor
+                .get("bundle")
+                .and_then(|b| b.get("group"))
+                .and_then(|v| v.as_str()),
+            Some("org.apache.nifi"),
+            "Bundle group should remain unchanged"
+        );
+        assert_eq!(
+            processor
+                .get("bundle")
+                .and_then(|b| b.get("version"))
+                .and_then(|v| v.as_str()),
+            Some("1.18.0"),
+            "Bundle version should remain unchanged"
+        );
+
+        // Verify other fields remain unchanged
+        assert_eq!(
+            processor.get("identifier").and_then(|v| v.as_str()),
+            Some("347aaa3b-2b3a-30c5-932d-58a109f9478f"),
+            "Identifier should remain unchanged"
+        );
+        assert_eq!(
+            processor.get("name").and_then(|v| v.as_str()),
+            Some("JoltTransformJSON"),
+            "Name should remain unchanged"
+        );
+    }
+}
diff --git a/src/migration/rules/jolt_transform_record.rs b/src/migration/rules/jolt_transform_record.rs
new file mode 100644
index 0000000..3680518
--- /dev/null
+++ b/src/migration/rules/jolt_transform_record.rs
@@ -0,0 +1,107 @@
+// SPDX-FileCopyrightText: 2025 Stackable GmbH
+// SPDX-License-Identifier: Apache-2.0
+
+use super::MigrationRule;
+use serde_json::Value;
+
+/// Migration rule for JoltTransformRecord processor.
+///
+/// Migrates `org.apache.nifi.processors.jolt.record.JoltTransformRecord` to
+/// `org.apache.nifi.processors.jolt.JoltTransformRecord` and updates the
+/// bundle from `nifi-jolt-record-nar` to `nifi-jolt-nar`.
+///
+/// Reference: <https://issues.apache.org/jira/browse/NIFI-12554>
+pub struct JoltTransformRecordMigration;
+
+impl MigrationRule for JoltTransformRecordMigration {
+    fn applies(&self, processor: &Value) -> bool {
+        processor
+            .get("type")
+            .and_then(|t| t.as_str())
+            .map(|t| t == "org.apache.nifi.processors.jolt.record.JoltTransformRecord")
+            .unwrap_or(false)
+    }
+
+    fn apply(&self, processor: &mut Value) -> bool {
+        let mut changed = false;
+
+        // Update the type field
+        if let Some(type_field) = processor.get_mut("type") {
+            if type_field.as_str()
+                == Some("org.apache.nifi.processors.jolt.record.JoltTransformRecord")
+            {
+                *type_field =
+                    Value::String("org.apache.nifi.processors.jolt.JoltTransformRecord".to_owned());
+                changed = true;
+            }
+        }
+
+        // Update the bundle artifact field
+        if let Some(bundle) = processor.get_mut("bundle") {
+            if let Some(artifact) = bundle.get_mut("artifact") {
+                if artifact.as_str() == Some("nifi-jolt-record-nar") {
+                    *artifact = Value::String("nifi-jolt-nar".to_owned());
+                    changed = true;
+                }
+            }
+        }
+
+        changed
+    }
+
+    fn description(&self) -> String {
+        "Migrate JoltTransformRecord from jolt-record to jolt bundle".to_owned()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use pretty_assertions::assert_eq;
+    use serde_json::json;
+
+    #[test]
+    fn test_jolt_transform_record_migration() {
+        let mut processor = json!({
+            "identifier": "test-id-456",
+            "name": "JoltTransformRecord",
+            "type": "org.apache.nifi.processors.jolt.record.JoltTransformRecord",
+            "bundle": {
+                "artifact": "nifi-jolt-record-nar",
+                "group": "org.apache.nifi",
+                "version": "1.27.0"
+            }
+        });
+
+        let rule = JoltTransformRecordMigration;
+        assert!(rule.applies(&processor));
+        assert!(rule.apply(&mut processor));
+
+        assert_eq!(
+            processor.get("type").and_then(|v| v.as_str()),
+            Some("org.apache.nifi.processors.jolt.JoltTransformRecord")
+        );
+        assert_eq!(
+            processor
+                .get("bundle")
+                .and_then(|b| b.get("artifact"))
+                .and_then(|v| v.as_str()),
+            Some("nifi-jolt-nar")
+        );
+    }
+
+    #[test]
+    fn test_does_not_apply_to_other_processors() {
+        let processor = json!({
+            "identifier": "other-proc",
+            "name": "SomeOtherProcessor",
+            "type": "org.apache.nifi.processors.standard.LogAttribute",
+            "bundle": {
+                "artifact": "nifi-standard-nar"
+            }
+        });
+
+        let rule = JoltTransformRecordMigration;
+        assert!(!rule.applies(&processor));
+    }
+}