diff --git a/scripts/count_assisted_by.sh b/scripts/count_assisted_by.sh
new file mode 100755
index 000000000..57cdf65d2
--- /dev/null
+++ b/scripts/count_assisted_by.sh
@@ -0,0 +1,79 @@
+#!/bin/bash
+##############################################################################
+# Copyright (C) 2026 Eclipse ThreadX contributors
+#
+# This program and the accompanying materials are made available under the
+# terms of the MIT License which is available at
+# https://opensource.org/licenses/MIT.
+#
+# AI Disclosure: This file was largely AI-generated by Claude Code (Opus 5).
+# The AI-generated portions may be considered public domain (CC0-1.0)
+# and not subject to the project's licence. The human contributor has
+# reviewed and verified that the code is correct.
+#
+# SPDX-License-Identifier: MIT and CC0-1.0
+##############################################################################
+
+# Report the Assisted-by attributions in a repository's history.
+#
+#     scripts/count_assisted_by.sh                     # HEAD, grouped by value
+#     scripts/count_assisted_by.sh origin/dev          # a branch
+#     scripts/count_assisted_by.sh origin/dev -- ports # a path
+#     scripts/count_assisted_by.sh --list origin/dev   # one line per commit
+#
+# Why not git's own trailer parser: git reads trailers only from a block at the
+# very end of a message. A squash merge concatenates the branch's commit
+# messages, which leaves every trailer but the last one buried mid-message, and
+# an indented trailer is skipped as well. Both forms are real attributions and
+# both are invisible to --format='%(trailers:key=Assisted-by)'. This reads whole
+# commit bodies instead, so the count is complete.
+
+set -u
+
+list=0
+if [ "${1:-}" = "--list" ]; then
+    list=1
+    shift
+fi
+
+rev="${1:-}"
+if [ -n "$rev" ] && [ "$rev" != "--" ]; then
+    shift
+else
+    rev="HEAD"
+fi
+
+if [ "${1:-}" = "--" ]; then
+    shift
+fi
+
+# %x02 opens a record and %x01 separates the hash from the body, so bodies
+# containing blank lines survive the pass through awk.
+git log "$rev" --format='%x02%H%x01%B' ${1+"$@"} \
+ | tr '\n' '\003' | tr '\002' '\n' \
+ | awk -F'\001' -v list="$list" '
+     NF >= 2 {
+         body = $2
+         gsub(/\003/, "\n", body)
+         n = split(body, line, "\n")
+         for (i = 1; i <= n; i++) {
+             if (line[i] ~ /^[[:space:]]*Assisted-by:[[:space:]]*/) {
+                 value = line[i]
+                 sub(/^[[:space:]]*Assisted-by:[[:space:]]*/, "", value)
+                 sub(/[[:space:]]+$/, "", value)
+                 if (value == "")
+                     continue
+                 if (list)
+                     print substr($1, 1, 8) "  " value
+                 else
+                     count[value]++
+             }
+         }
+     }
+     END {
+         if (list)
+             exit
+         for (value in count)
+             printf "%6d  %s\n", count[value], value
+     }' \
+ | { if [ "$list" -eq 1 ]; then cat; else sort -rn; fi; }