Fix: parse Grok Build camelCase hook stdin (#646)

Grok was classified as GitHub Copilot, so the design hook skipped every
edit with no-file-path and never ran Stop. Normalize toolInput/sessionId
and treat Stop additionalContext as the Grok product.

Prepared with AI assistance.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Abdul Wahab
2026-08-24 05:28:21 +05:00
co-authored by Cursor
parent c39b6425fa
commit 35ae07339b
7 changed files with 289 additions and 27 deletions
+9 -8
View File
@@ -2,12 +2,14 @@
/**
* Impeccable design hook — PostToolUse + Stop entry point.
*
* Reads the Claude Code / Codex / Cursor hook event from stdin and routes by
* `hook_event_name`:
* Reads the Claude Code / Codex / Cursor / Grok Build hook event from stdin
* and routes by Stop vs everything else. Claude uses `hook_event_name:
* "Stop"`; Grok uses `hookEventName: "stop"`.
*
* - PostToolUse: runs the immediate-tier detector rules against the touched
* file and emits a system reminder via
* `hookSpecificOutput.additionalContext` when findings exist.
* `hookSpecificOutput.additionalContext` when findings exist. Grok
* discards that stdout; the scan still warms the session cache for Stop.
* - Stop: runs the FULL detector rule set over every UI file touched this
* session (the deep pass), deduped against what the per-edit pass already
* surfaced, and emits once via the Stop additionalContext channel.
@@ -19,7 +21,7 @@
* subprocess. This file is the thin stdin/stdout adapter.
*/
import { runHook, runStopHook, writeAuditLog } from './hook-lib.mjs';
import { runHook, runStopHook, writeAuditLog, isStopEvent } from './hook-lib.mjs';
async function readStdin() {
if (process.stdin.isTTY) return '';
@@ -28,10 +30,9 @@ async function readStdin() {
return Buffer.concat(chunks).toString('utf-8');
}
function isStopEvent(stdinJson) {
function stdinIsStop(stdinJson) {
try {
const event = JSON.parse(stdinJson);
return event && typeof event === 'object' && event.hook_event_name === 'Stop';
return isStopEvent(JSON.parse(stdinJson));
} catch {
// Malformed stdin falls through to runHook, which audits the skip.
return false;
@@ -48,7 +49,7 @@ async function main() {
let stdinJson = '';
try { stdinJson = await readStdin(); } catch { /* fall through */ }
const run = isStopEvent(stdinJson) ? runStopHook : runHook;
const run = stdinIsStop(stdinJson) ? runStopHook : runHook;
const result = await run({
stdinJson,
env: inheritedEnv,