P1: Gate message asked for raw production data records — changed to
"redacted or synthetic values" to prevent sensitive data exfiltration
P2: SKILL.md description now includes MultiEdit (was missing after
MultiEdit gate was added in previous commit)
P2: Session key pruning now caps __prefixed keys at 50 to prevent
unbounded growth even in theoretical edge cases
9/9 tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- isChecked() no longer calls saveState() — read-only operation
should not write to disk (was causing 3x writes per tool call)
- Test cleanup uses fs.rmSync(recursive) instead of fs.rmdirSync
which failed with ENOTEMPTY when .tmp files remained
9/9 tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
P1 (cubic-dev-ai): Test process PID differs from spawned hook PID,
so test was seeding/clearing wrong state file. Fix: pass fixed
CLAUDE_SESSION_ID='gateguard-test-session' to spawned hooks.
P2 (cubic-dev-ai): Pruning checked array could evict __bash_session__
and other session keys, causing gates to re-fire mid-session. Fix:
preserve __prefixed keys during pruning, only evict file-path entries.
9/9 tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
P1 bug reported by greptile-apps: MultiEdit uses toolInput.edits[].file_path,
not toolInput.file_path. The gate was silently allowing all MultiEdit calls.
Fix: separate MultiEdit into its own branch that iterates edits array
and gates on the first unchecked file_path.
9/9 tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Addresses reviewer feedback from @affaan-m:
1. State keyed by CLAUDE_SESSION_ID / ECC_SESSION_ID
- Falls back to pid-based isolation when env vars absent
- State file: state-{sessionId}.json (was .session_state.json)
2. Atomic write+rename semantics
- Write to temp file, then fs.renameSync to final path
- Prevents partial reads from concurrent hooks
3. Bounded checked list (MAX_CHECKED_ENTRIES = 500)
- Prunes to last 500 entries when cap exceeded
- Stale session files auto-deleted after 1 hour
9/9 tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
MultiEdit was bypassing the fact-forcing gate because only Edit and
Write were checked. Now MultiEdit triggers the same edit gate (list
importers, public API, data schemas) before allowing file modifications.
Updated both the hook logic and hooks.json matcher pattern.
Addresses coderabbit/greptile/cubic-dev: "MultiEdit bypasses gate"
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Destructive bash gate previously denied every invocation with no
isChecked call, creating an infinite deny loop. Now gates per-command
on first attempt and allows retry after the model presents the required
facts (targets, rollback plan, user instruction).
Addresses greptile P1: "Destructive bash gate permanently blocks"
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- GATEGUARD_STATE_DIR env var for test isolation (hook + tests)
- Exit code assertions on all 9 tests (no vacuous passes)
- Non-vacuous allow-path assertions (verify pass-through preserves input)
- Robust newline-injection assertion
- clearState() now reports errors instead of swallowing
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
1. Use run-with-flags.js wrapper (supports ECC_HOOK_PROFILE, ECC_DISABLED_HOOKS)
2. Add session timeout (30min inactivity = state reset, fixes "once ever" bug)
3. Add 9 integration tests (deny/allow/timeout/sanitize/disable)
Refactored hook to module.exports.run() pattern for direct require() by
run-with-flags.js (~50-100ms faster per invocation).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
A PreToolUse hook that forces Claude to investigate before editing.
Instead of self-evaluation ("are you sure?"), it demands concrete facts:
importers, public API, data schemas, user instruction.
A/B tested: +2.25 quality points (9.0 vs 6.75) across two independent tasks.
- scripts/hooks/gateguard-fact-force.js — standalone Node.js hook
- skills/gateguard/SKILL.md — skill documentation
- hooks/hooks.json — PreToolUse entries for Edit|Write and Bash
Full package with config: pip install gateguard-ai
Repo: https://github.com/zunoworks/gateguard
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
