Agent skill

standards-extraction

Extract coding standards and conventions from CONTRIBUTING.md, .editorconfig, linter configs. Use for onboarding and ensuring consistent contributions.

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Install this agent skill to your Project

npx add-skill https://github.com/aiskillstore/marketplace/tree/main/skills/consiliency/standards-extraction

SKILL.md

Standards Extraction Skill

Extract coding standards, formatting rules, and contribution guidelines from project configuration files. Returns structured data about project conventions.

Variables

Variable Default Description
INCLUDE_LINTER_RULES true Parse ESLint, Prettier, Ruff configs
INCLUDE_EDITOR_CONFIG true Parse .editorconfig
INCLUDE_GIT_HOOKS true Check for pre-commit, husky configs
OUTPUT_FORMAT json Output format: json, markdown, or toon

Instructions

MANDATORY - Follow the Workflow steps below in order. Do not skip steps.

  1. Check for CONTRIBUTING.md or similar guide files
  2. Parse formatting configuration files
  3. Parse linting configuration files
  4. Check for git hooks and CI checks
  5. Compile standards summary

Red Flags - STOP and Reconsider

If you're about to:

  • Assume formatting rules without checking config files
  • Skip CONTRIBUTING.md because "it's probably standard"
  • Infer conventions without evidence from configs
  • Report rules that contradict actual config files

STOP -> Read the config files -> Extract actual rules -> Then report

Workflow

1. Discover Standards Files

Check for these files (in order):

File Type Purpose
CONTRIBUTING.md Markdown Contribution guidelines
CONTRIBUTING Text Contribution guidelines
docs/CONTRIBUTING.md Markdown Contribution guidelines
.github/CONTRIBUTING.md Markdown Contribution guidelines
.editorconfig INI Editor formatting
.prettierrc* JSON/YAML Prettier config
prettier.config.* JS/TS Prettier config
.eslintrc* JSON/YAML ESLint config
eslint.config.* JS/TS ESLint flat config
pyproject.toml TOML Python tools (ruff, black, isort)
.ruff.toml TOML Ruff config
.pre-commit-config.yaml YAML Pre-commit hooks
.husky/ Directory Git hooks
.github/PULL_REQUEST_TEMPLATE.md Markdown PR template
.github/ISSUE_TEMPLATE/ Directory Issue templates

2. Extract Contribution Guidelines

From CONTRIBUTING.md, extract:

  • Commit message format: Conventional commits, gitmoji, etc.
  • Branch naming: feature/, fix/, etc.
  • PR process: Required reviewers, checks, etc.
  • Code style notes: Any explicit guidance
  • Testing requirements: What tests are required

3. Extract Formatting Rules

From .editorconfig:

ini
[*]
indent_style = space
indent_size = 2
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

From Prettier config:

json
{
  "semi": true,
  "singleQuote": true,
  "tabWidth": 2,
  "printWidth": 100
}

4. Extract Linting Rules

From ESLint:

  • Key enabled/disabled rules
  • Extended configs (airbnb, standard, etc.)
  • Custom rules

From Ruff/Black (pyproject.toml):

toml
[tool.ruff]
line-length = 88
select = ["E", "F", "I"]

[tool.black]
line-length = 88

5. Extract Git Hooks

From .pre-commit-config.yaml:

  • Hooks that run on commit
  • Required checks

From .husky/:

  • Pre-commit scripts
  • Pre-push scripts

6. Compile Output

json
{
  "project_root": "/path/to/project",
  "extracted_at": "2025-12-21T12:00:00Z",
  "contribution_guidelines": {
    "source": "CONTRIBUTING.md",
    "commit_format": "conventional",
    "branch_naming": "type/description",
    "pr_requirements": ["tests", "review"],
    "notes": []
  },
  "formatting": {
    "indent_style": "space",
    "indent_size": 2,
    "line_length": 100,
    "quotes": "single",
    "semicolons": true,
    "trailing_commas": "es5",
    "sources": [".editorconfig", ".prettierrc"]
  },
  "linting": {
    "javascript": {
      "tool": "eslint",
      "extends": ["next/core-web-vitals"],
      "key_rules": {}
    },
    "python": {
      "tool": "ruff",
      "line_length": 88,
      "select": ["E", "F", "I"]
    }
  },
  "git_hooks": {
    "pre_commit": ["lint-staged", "prettier"],
    "pre_push": ["test"]
  },
  "ci_checks": {
    "source": ".github/workflows/",
    "checks": ["lint", "test", "build"]
  }
}

Cookbook

Parsing Configurations

  • IF: Need to parse any config file
  • THEN: Read and execute ./cookbook/config-parsing.md

Quick Reference

Commit Format Detection

Pattern in CONTRIBUTING.md Format
"Conventional Commits" conventional
"feat:", "fix:", "chore:" conventional
":emoji:" or gitmoji gitmoji
"JIRA-123" pattern jira
No pattern found freeform

Common Formatter Configs

File Tool
.prettierrc* Prettier
biome.json Biome
.editorconfig EditorConfig
dprint.json dprint

Common Linter Configs

File Tool
.eslintrc*, eslint.config.* ESLint
pyproject.toml [tool.ruff] Ruff
pyproject.toml [tool.pylint] Pylint
.golangci.yml golangci-lint
clippy.toml Clippy (Rust)

Output Schema

json
{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "project_root": {"type": "string"},
    "extracted_at": {"type": "string", "format": "date-time"},
    "contribution_guidelines": {
      "type": "object",
      "properties": {
        "source": {"type": "string"},
        "commit_format": {"type": "string"},
        "branch_naming": {"type": "string"},
        "pr_requirements": {"type": "array", "items": {"type": "string"}},
        "notes": {"type": "array", "items": {"type": "string"}}
      }
    },
    "formatting": {
      "type": "object",
      "properties": {
        "indent_style": {"type": "string"},
        "indent_size": {"type": "integer"},
        "line_length": {"type": "integer"},
        "quotes": {"type": "string"},
        "semicolons": {"type": "boolean"},
        "sources": {"type": "array", "items": {"type": "string"}}
      }
    },
    "linting": {"type": "object"},
    "git_hooks": {"type": "object"},
    "ci_checks": {"type": "object"}
  }
}

Integration

This skill is used by:

  • /ai-dev-kit:quickstart-codebase - Onboarding workflow
  • lane-executor - To follow project conventions
  • Contribution validation - To check PR compliance

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