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:

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

From Prettier config:

{
  "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):

[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

{
  "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

{
  "$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