gf-precommit

gf-precommit is a skill for Claude Code from byx-darwin/gitflow-cli. It costs 67 tokens per session (1,040 once invoked), scanned A, original, MIT.

A pre-commit checker that runs formatting, linting, and tests suited to the project before a commit. A pre-commit hook is a Git check that runs automatically before a commit is created.

In plain words
What is it for?
Use it to run local format, lint, and test checks, verify or configure a pre-commit hook, and investigate a commit rejected by these checks.
Why use it?
It catches common quality problems before code is committed and reports them without automatically changing files. It supports GitHub, GitLab, and GitCode through the project's unified gf command-line tool.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the gitflow-cli plugin — 30 skills shipped together

Good fit Use it to run local format, lint, and test checks, verify or configure a pre-commit hook, and investigate a commit rejected by these checks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/byx-darwin/gitflow-cli/gf-precommit
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add byx-darwin/gitflow-cli --skill gf-precommit
Clone the repo
git clone --depth 1 https://github.com/byx-darwin/gitflow-cli

Made for: Claude Code.

Or install gitflow-cli, the plugin that ships this one along with the rest of its 30 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for gf-precommit

README.md
[![agentmods](https://agentmods.dev/badge/skills/byx-darwin/gitflow-cli/gf-precommit/github.svg)](https://agentmods.dev/skills/byx-darwin/gitflow-cli/gf-precommit)
Your own site
<a href="https://agentmods.dev/skills/byx-darwin/gitflow-cli/gf-precommit"><img src="https://agentmods.dev/badge/skills/byx-darwin/gitflow-cli/gf-precommit/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for gf-precommit

Your own site · 80×15
<a href="https://agentmods.dev/skills/byx-darwin/gitflow-cli/gf-precommit"><img src="https://agentmods.dev/badge/skills/byx-darwin/gitflow-cli/gf-precommit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,040 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00067 $0.01040
Opus 5.5 $0.00027 $0.00416
Sonnet 5.5 $0.00013 $0.00208
Haiku 4.5 $0.00007 $0.00104

Measured 24d ago against content hash 3610c8a2fc72, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gf-precommit scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 24d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/gf-precommit/SKILL.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

gf-precommit — Language-Agnostic Pre-commit Checks

Run language-appropriate fmt/lint/test before commit. Report results. Optionally configure Git hook.

CLI Requirement

MUST use gf CLI, NOT gh CLI.

CLI Scope Platform Support
gf This project GitHub + GitLab + GitCode
gh GitHub only GitHub only

Why: gf is the unified CLI for this project. Using gh breaks GitLab/GitCode compatibility.

Preconditions

  • gf installed: command -v gf
  • gf authenticated: gf auth status

When NOT to Use

Scenario Why Not Use Instead
Running full 6-gate quality verification This skill runs 3 checks (fmt/lint/test), not the full quality pipeline /gf-quality for build + test + coverage + format + static + pre-commit
Analyzing remote CI/CD pipeline health This skill runs local checks, not remote pipeline analysis /gf-pipeline-analyzer for CI/CD success-rate and failure analysis
Auto-fixing all lint and format issues This skill reports issues and requires confirmation before any fix Show diff first, then fix with explicit user approval
Running security-specific audits This skill runs general quality checks, not security scans /gf-security-check for cargo audit, cargo deny, secret detection
Configuring hooks without user consent Hook configuration is a side effect requiring authorization Ask user first before installing or modifying hooks
Inspecting existing commits This skill runs checks before commit, not on already-pushed commits /gf-commit for viewing/diffing existing commits

Step 1: Language Detection

Follow gf-quality/references/detector.md for the sole language and workspace scan. Load the matching references/<lang>.md and shared gf-quality/references/profiles/<lang>.md for the selected language.

Step 2: Run Checks

Three checks in sequence:

# Check What
1 format Code formatting check
2 lint Static analysis / linting
3 test Run test suite

Read the full file on GitHub · 106 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 24d ago Changed · -8 lines 3610c8a2fc72
  2. 1mo ago First seen · 114 lines · 67 tokens per session scan A b42c26724f28

Subscribe to this mod's changes

gf-precommit is a skill published in the GitHub repository byx-darwin/gitflow-cli (3 stars, last pushed 22d ago), licensed MIT. It adds 67 tokens to every session and 1,040 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.