HermesGate

HermesGate turns “run the checks again” into a bounded completion ceremony. It runs the repository's own commands, records exactly which content and tool versions were checked, and reuses a PASS only while those bytes still match.

It has no daemon and no runtime dependencies beyond Python 3.11+ and Git. Lifecycle hooks inspect receipts; they do not repair code, invoke a model, or authorize a push, pull request, or release.

Five-minute quickstart

From a local checkout of HermesGate:

python3 -m venv .venv
. .venv/bin/activate
python -m pip install .
cd /path/to/your/git-repository
hermes-gate init
hermes-gate fast
hermes-gate full
hermes-gate doctor

init detects repository-native Python or JavaScript commands and writes a reviewable .hermes/gate.toml, a checksum-bound stdlib runner, and a CI workflow. Existing integration files are not overwritten unless hermes-gate init --force is explicit.

The copied runner also requires Python 3.11 or newer, even when the project it checks supports older Python versions. Run Gate under a supported interpreter; profile commands may select the project's own interpreter separately.

New default whitespace checks inspect selected working-tree, staged and untracked files using Git's whitespace rules. Existing profiles are preserved; adopting the new check in an existing repository requires a reviewed runner/profile update. The copied runner drains stdout and stderr concurrently while retaining at most 32 KiB of each stream; its truncation flag reports any discarded output.

Completion workflows

A typical local ceremony is:

hermes-gate fast
hermes-gate review
hermes-gate full
hermes-gate boundary commit

The boundary command only verifies configured receipts. It never performs the Git operation or grants owner authorization.

CLI

hermes-gate init [--force]
hermes-gate fast
hermes-gate repair
hermes-gate review
hermes-gate full
hermes-gate boundary commit|push|pr-create|pr-ready
hermes-gate doctor
hermes-gate uninstall-repo
hermes-gate --version

Commands emit JSON with one terminal state: PASS, FAIL, NOT_APPLICABLE, NOT_CONFIGURED, REVIEW_UNAVAILABLE, PARKED, or ERROR.

Repository-native default

The generated profile uses argv arrays and the repository's existing Ruff, pytest, npm, lint, typecheck, test, or build commands. It never installs these tools. Runtime receipts, baselines, install manifests, and adapter artifacts live under .git/hermes-gate/; generated tracked source contains no machine-specific absolute paths.

[gate]
fast_budget_seconds = 8.0
full_required_local = false

[[fast]]
name = "ruff"
argv = ["ruff", "check", "{files}"]
timeout_seconds = 6.0
globs = ["**/*.py"]

{files} expands to separate argv entries. Shell strings are rejected.

Optional primitive adapters

HermesGate packages a standard-library loader and validator for the shared gate-result/v1 schema. PyGate and QuickGate.js adapters are opt-in and isolated; HermesGate never downloads or installs them.

PyGate 0.2.0 or newer:

[adapter]
enabled = true
name = "pygate"
argv = ["pygate"]
minimum_version = "0.2.0"

QuickGate.js 0.2.3 or newer:

[adapter]
enabled = true
name = "quick-gate"
argv = ["quick-gate"]
minimum_version = "0.2.3"

Adapter output is written below .git/hermes-gate/adapters/, validated against the packaged contract, and then normalized into a HermesGate receipt. An absent, old, or invalid primitive returns ERROR; it never falls through to an unreviewed installation.

Review and hooks

review requires an exact fast PASS. CodeRabbit agent-mode JSONL is the initial provider boundary. If it is unavailable, a clean committed diff may use an installed hermes-pr-review fallback. Unparseable, unauthenticated, timed-out, or unavailable review output is never relabeled PASS.

install-codex and uninstall-codex are intentionally hidden integration commands. Codex integration preserves unrelated hook and instruction content. Claude settings and instruction surfaces remain outside Codex's ownership.

What PASS means

A PASS proves only that the declared commands passed for the receipt-bound local content. It does not prove universal correctness, security, mergeability, public release, adoption, or permission to push, publish, or create a pull request.

See SECURITY.md, CONTRIBUTING.md, and CHANGELOG.md for project policy and release history.