Lowercase MCP tool and prompt copy to match brand casing

src/lib/mcp/analytics-context.ts

@@ -1,6 +1,6 @@
 export const MCP_INTENT_ARGUMENT_DESCRIPTION =
-  "Why this tool is being called and how it fits the user's overall goal, in 15-25 words, " +
-  "third person. Used for product analytics. Never restate argument values, and never " +
-  "include credentials, tokens, URLs, file contents, or personal data. Example: " +
-  '"Inspecting a running browser session to diagnose a checkout automation that stopped ' +
+  "why this tool is being called and how it fits the user's overall goal, in 15-25 words, " +
+  "third person. used for product analytics. never restate argument values, and never " +
+  "include credentials, tokens, urls, file contents, or personal data. example: " +
+  '"inspecting a running browser session to diagnose a checkout automation that stopped ' +
   'responding partway through the flow."';

src/lib/mcp/analytics.test.ts

@@ -1030,7 +1030,7 @@ describe("instrumentMcpAnalytics (SDK integration)", () => {
       });
       expect(rejectedVaultInput.isError).toBe(true);
       expect(JSON.stringify(rejectedVaultInput)).toContain(
-        "Invalid vault tool input",
+        "invalid vault tool input",
       );
       expect(JSON.stringify(rejectedVaultInput)).not.toContain(
         "never-echo-this",

src/lib/mcp/browser-config.test.ts

@@ -9,7 +9,7 @@ import {
 test("browser create config rejects an empty start URL", () => {
   expect(buildBrowserCreateConfig({ start_url: "" })).toEqual({
     ok: false,
-    error: "Error: start_url must be a valid URL.",
+    error: "error: start_url must be a valid url.",
   });
 });
 

src/lib/mcp/browser-config.ts

@@ -92,7 +92,7 @@ function configValue<T>(value: T): BrowserConfigResult<T> {
 }
 
 function configError<T>(message: string): BrowserConfigResult<T> {
-  return { ok: false, error: `Error: ${message}` };
+  return { ok: false, error: `error: ${message}` };
 }
 
 function buildBrowserStartUrl(
@@ -103,7 +103,7 @@ function buildBrowserStartUrl(
   try {
     new URL(startUrl);
   } catch {
-    return configError("start_url must be a valid URL.");
+    return configError("start_url must be a valid url.");
   }
 
   return configValue(startUrl);
@@ -113,7 +113,7 @@ function buildBrowserProfile(
   params: BrowserProfileParams,
 ): BrowserConfigResult<BrowserProfileConfig | undefined> {
   if (params.profile_name && params.profile_id) {
-    return configError("Cannot specify both profile_name and profile_id.");
+    return configError("cannot specify both profile_name and profile_id.");
   }
   if (
     params.save_profile_changes !== undefined &&
@@ -138,7 +138,7 @@ function buildBrowserExtensions(
   params: BrowserExtensionParams,
 ): BrowserConfigResult<BrowserExtensionConfig | undefined> {
   if (params.extension_id && params.extension_name) {
-    return configError("Cannot specify both extension_id and extension_name.");
+    return configError("cannot specify both extension_id and extension_name.");
   }
   if (!params.extension_id && !params.extension_name)
     return configValue(undefined);

src/lib/mcp/project-selection.test.ts

@@ -148,7 +148,7 @@ describe("projectIDForOperation", () => {
       scopes: [],
     };
     expect(() => connectionContextFromAuthInfo(info)).toThrow(
-      "Kernel connection scope is unavailable",
+      "KERNEL connection scope is unavailable",
     );
   });
 });

src/lib/mcp/project-selection.ts

@@ -3,10 +3,10 @@ import { z } from "zod";
 import type { McpConnectionContext } from "@/lib/mcp/auth-context";
 
 const DEFAULT_PROJECT_DESCRIPTION =
-  "Optional project name or ID used to scope this operation. On organization-wide connections, omit it to use the API's organization-wide or default-project behavior. On project-scoped connections, omit it or pass the fixed project returned by get_connection_context.";
+  "optional project name or id used to scope this operation. on organization-wide connections, omit it to use the api's organization-wide or default-project behavior. on project-scoped connections, omit it or pass the fixed project returned by get_connection_context.";
 
 const DEFAULT_PROJECT_ID_DESCRIPTION =
-  "Deprecated: use `project` instead. Optional project ID used to scope this operation. On organization-wide connections, omit it to use the API's organization-wide or default-project behavior. On project-scoped connections, omit it or pass the fixed project ID returned by get_connection_context.";
+  "deprecated: use `project` instead. optional project id used to scope this operation. on organization-wide connections, omit it to use the api's organization-wide or default-project behavior. on project-scoped connections, omit it or pass the fixed project id returned by get_connection_context.";
 
 export type ProjectSelection = {
   project?: string;
@@ -46,7 +46,7 @@ export function connectionContextFromAuthInfo(
 ): McpConnectionContext {
   const context = authInfo.extra?.connectionContext;
   if (!context || typeof context !== "object" || !("scope" in context)) {
-    throw new Error("Kernel connection scope is unavailable");
+    throw new Error("KERNEL connection scope is unavailable");
   }
   return context as McpConnectionContext;
 }

src/lib/mcp/prompts.test.ts

@@ -46,6 +46,54 @@ function schemaNames(value: unknown): string[] {
   ]);
 }
 
+function connectAdvertisedMcp() {
+  return connectTestMcp((server) => {
+    registerMcpCapabilities(server, {
+      mcpApps: true,
+      vaults: true,
+      search: true,
+    });
+    instrumentMcpAnalytics(server, null);
+  }, {});
+}
+
+async function advertisedTexts(
+  mcp: Awaited<ReturnType<typeof connectAdvertisedMcp>>,
+) {
+  const promptText = async (name: string, args: Record<string, string>) => {
+    const result = await mcp.client.getPrompt({ name, arguments: args });
+    const content = result.messages[0].content;
+    return content.type === "text" ? content.text : "";
+  };
+  const { tools } = await mcp.client.listTools();
+  const { prompts } = await mcp.client.listPrompts();
+  const texts = [...describedText(tools), ...describedText(prompts)];
+  for (const concept of ["browsers", "apps", "overview"]) {
+    texts.push(await promptText("kernel-concepts", { concept }));
+  }
+  texts.push(
+    await promptText("debug-browser-session", {
+      session_id: "session_123",
+      issue_description: "page fails to load",
+    }),
+  );
+  return texts;
+}
+
+// Removes the machine-readable parts of advertised prose: code, quoted literal
+// values, URLs, paths, and constant-style identifiers such as env vars and
+// error codes.
+function stripLiterals(text: string) {
+  return text
+    .replace(/```[\s\S]*?```/g, "")
+    .replace(/`[^`]*`/g, "")
+    .replace(/"[^"]*"/g, "")
+    .replace(/https?:\/\/\S+/g, "")
+    .replace(/(?<![\w.])\/[\w\-.{}:/*]+/g, "")
+    .replace(/\b[A-Z][A-Z0-9]*(?:_[A-Z0-9]+)+\b/g, "")
+    .replace(/\bKERNEL\b/g, "");
+}
+
 describe("mcp browser positioning", () => {
   test("describes site compatibility with authorization language", async () => {
     const mcp = await connectTestMcp(registerBrowserCapabilities, {});
@@ -64,32 +112,10 @@ describe("mcp browser positioning", () => {
   });
 
   test("keeps advertised metadata and prompts free of access-evasion language", async () => {
-    const mcp = await connectTestMcp((server) => {
-      registerMcpCapabilities(server, {
-        mcpApps: true,
-        vaults: true,
-        search: true,
-      });
-      instrumentMcpAnalytics(server, null);
-    }, {});
-    const promptText = async (name: string, args: Record<string, string>) => {
-      const result = await mcp.client.getPrompt({ name, arguments: args });
-      const content = result.messages[0].content;
-      return content.type === "text" ? content.text : "";
-    };
+    const mcp = await connectAdvertisedMcp();
     try {
       const { tools } = await mcp.client.listTools();
-      const { prompts } = await mcp.client.listPrompts();
-      const texts = [...describedText(tools), ...describedText(prompts)];
-      for (const concept of ["browsers", "apps", "overview"]) {
-        texts.push(await promptText("kernel-concepts", { concept }));
-      }
-      texts.push(
-        await promptText("debug-browser-session", {
-          session_id: "session_123",
-          issue_description: "page fails to load",
-        }),
-      );
+      const texts = await advertisedTexts(mcp);
 
       expect(
         texts.flatMap((text) => text.match(BLOCKED_LANGUAGE) ?? []),
@@ -110,6 +136,22 @@ describe("mcp browser positioning", () => {
     }
   });
 
+  test("keeps advertised metadata and prompts in brand casing", async () => {
+    const mcp = await connectAdvertisedMcp();
+    try {
+      const prose = (await advertisedTexts(mcp)).map(stripLiterals);
+
+      expect(prose.flatMap((text) => text.match(/\S*[A-Z]\S*/g) ?? [])).toEqual(
+        [],
+      );
+      expect(prose.flatMap((text) => text.match(/\bkernel\b/g) ?? [])).toEqual(
+        [],
+      );
+    } finally {
+      await mcp.close();
+    }
+  });
+
   test.each(["browsers", "apps", "overview"])(
     "keeps the %s concept prompt focused on browser workflows",
     async (concept) => {