shield_lock
JinDaGe
← Back to skills
extension
Category: Development & EngineeringNo API key required

fetch-rules

Fetch and apply Cursor-style workspace rules supporting all rule formats (.cursor/rules/*.md, *.mdc, AGENTS.md, and legacy .cursorrules).

personAuthor: jakexiaohubgithub
open_in_newRepositorydownloadDownload package

Fetch Rules

Purpose

This skill emulates Cursor's rule selection behavior for AI agents.

It discovers and selects rules from:

  • Project Rules (.cursor/rules/)
    • .mdc files with frontmatter (description, globs, alwaysApply)
    • .md files without frontmatter (treated as always-apply)
  • AGENTS.md files (root and nested subdirectories)
  • Legacy .cursorrules at repo root (deprecated but still supported)

Rule Selection Semantics

| Rule Type | Selection Behavior | |---|---| | alwaysApply: true | Always included | | Simple .md (no frontmatter) | Always included | | globs: ... | Included when any candidate file matches | | description: ... | Included when prompt overlaps with description keywords | | No metadata (.mdc only) | Included only when explicitly referenced | | AGENTS.md | Always included when in scope (directory hierarchy) |

Candidate files come from --files, --use-git-diff, and file-like paths found in --prompt.

Requirements

  • bash (macOS / Linux default)
  • git optional (only if you use --use-git-diff)

No Python, Node, or jq required.

Usage

Run commands from this skill directory (the directory containing this SKILL.md). Do not hardcode agent install paths.

bash scripts/fetch_rules.sh --prompt "<your request>"

Optional file hints:

bash scripts/fetch_rules.sh --prompt "<request>" --files path/to/a.ts path/to/b.sql
bash scripts/fetch_rules.sh --prompt "<request>" --use-git-diff

Force-include a rule by filename:

bash scripts/fetch_rules.sh --prompt "<request>" --explicit global.mdc
bash scripts/fetch_rules.sh --prompt "<request>" --explicit react-patterns.md

Supported Formats

| Format | Location | Description | |---|---|---| | .mdc | .cursor/rules/ | Rules with YAML frontmatter for fine-grained control | | .md | .cursor/rules/ | Simple markdown rules (always applied) | | AGENTS.md | Root or subdirs | Simple agent instructions (always applied in scope) | | .cursorrules | Root only | Legacy format (deprecated, will be removed) |

Notes

  • If multiple rules share the same filename, the rule in the closest scoped directory wins (deepest scope).
  • Glob matching uses bash pattern matching ([[ file == pattern ]]). Cursor-style ** works effectively as * in this matcher.
  • AGENTS.md files are combined hierarchically—parent directories' instructions apply alongside more specific subdirectory instructions.