Prek

Skill MAHDTech/agent-skills/skills/tooling/prek

Make AI Agents great again!

Install

npx -y skills add MAHDTech/agent-skills --skill prek

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Run pre-commit hooks using the prek CLI tool. Differentiates between 'pre-commit' (the git hooks concept/lifecycle stage) and 'prek' (the actual binary command; pre-commit CLI is deprecated, use prek). Use when you need to run, configure, check, or troubleshoot git pre-commit hooks.

SKILL.md

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Prek (Pre-commit)

prek is a fast Git hook manager written in Rust, designed as a drop-in replacement for the deprecated pre-commit CLI tool.

[!IMPORTANT] Command Line & Package Discrepancy: The CLI binary is prek, NOT pre-commit. The pre-commit CLI tool is deprecated and MUST NOT be used.

Key Differences

Git concept / stage: "pre-commit" refers strictly to the Git lifecycle hook stage (e.g. .pre-commit-config.yaml).
Legacy CLI Tool (DEPRECATED): The Python-based pre-commit CLI tool is deprecated. NEVER add pkgs.pre-commit or pre-commit package/input to devenv.nix or package managers.
Active Hook Runner: prek is the CLI binary used to run and configure pre-commit hooks.

Running Hooks

When working inside a devenv shell, run:

SECRETSPEC_REASON="running pre-commit hooks" devenv --no-tui shell -- prek run -a

If not using devenv, run:

prek run -a

Use -a or --all-files to run hooks against all files in the repository.

Commands

prek run: Run hooks against modified files.
prek run -a: Run hooks against all files.
prek install: Install prek Git shims into Git's hooks directory.
prek uninstall: Uninstall prek Git shims.
prek validate-config: Validate configuration files (prek.toml or .pre-commit-config.yaml).
prek cache: Manage the prek cache (e.g., prek cache clean).

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.

Gives 0 of the 12 instructions most quality gates skills give in 387 tokens

Counted across 1,195 of the 2,094 authors here whose files we hold, read 2026-08-07

Read the output and check the exit codein 54 of 1195, across 14 files
Verify requirements using a line-by-line checklistin 53 of 1195, across 12 files
Identify the verification command proving the claimin 51 of 1195, across 12 files
Run the full verification commandin 50 of 1195, across 11 files
Verify output confirms the claimin 49 of 1195, across 12 files
Check version control diff after agent delegationin 46 of 1195, across 6 files
State claim with evidencein 44 of 1195, across 4 files
Run the test suitein 33 of 1195, across 26 files
Keep state in memory by defaultin 27 of 1195, across 6 files
Make prototype runnable with one commandin 26 of 1195, across 5 files
Produce a verification reportin 25 of 1195, across 14 files
Detect the package manager from lockfilesin 24 of 1195, across 5 files

Said here and by no other author read

Use the `prek` CLI tool
Run `prek run -a` to run hooks against all files

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