ast-grep SKILL.md skillA
ast-grep from rolandbrecht/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add rolandbrecht/agent-skills/ast-grep@git:20260921.83744c4Pins git:20260921.83744c4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- rolandbrecht/agent-skills
- Path
ast-grep/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260921.83744c4, committed Sep 21, 2026
- First version recorded
- Aug 13, 2026
- Size
- 8,054 bytes
- Repository stars
- 4
- License
- MIT
AST-based structural code search, lint, and rewrite via the `ast-grep` (`sg`) CLI. Use when a search or edit is about code SYNTAX STRUCTURE rather than text: finding every call site of a function, matching shapes such as "async functions without try/catch" or "useEffect without a dependency array", codemods that rewrite matched nodes, YAML lint rules that enforce project patterns, multi-pass symbol renaming, or listing a file's symbols, imports and exports. Also use whenever the request names…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# ast-grep — Structural Code Search, Lint, and Rewrite Content verified against ast-grep 0.45.1. Flags can drift between versions — when a command fails, check `ast-grep <cmd> --help`. ## Overview ast-grep is a fast, Rust-based CLI tool. It parses code with tree-sitter and matches the syntax tree, not the text. You write patterns that look like the code you search for. Metavariables (`$NAME`, `$$$ARGS`) act as wildcards for AST nodes. Three main modes: | Mode | Command | Use for | | --- | --- | --- | | Search / rewrite | `ast-grep run -p '<pattern>'` (default command) | One-time queries and codemods | | Lint | `ast-grep scan` | YAML rule sets, CI checks, complex rules | | Explore | `ast-grep outline` | Symbols, imports, exports of files | It supports 25+ languages: JavaScript, TypeScript, TSX, Python, Rust, Go, Java, C, C++, C#, Kotlin, Swift, Ruby, PHP, and more. See the language table in [references/cli-reference.md](references/cli-reference.md). ## Installation Check first: `which ast-grep`. If it is not installed, run the bundled helper: ```bash bash <SKILL_DIR>/scripts/install.sh ``` …
Read the whole file at its exact version.
How to install
mdr add rolandbrecht/agent-skills/ast-grep@sha256:facf2f6e9932299bThe line at the top of this page pins the label git:20260921.83744c4, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_7ziq67tw5ffuaefl)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 13, 2026 and Sep 21, 2026, about one every 39 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260921.83744c4 latest | 2026-09-21 | 83744c4 | 8,054 B | A | view · diff |
| git:20260813.27110eb | 2026-08-13 | 27110eb | 7,747 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8054 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
rolandbrecht/agent-skills · 4 stars · license MIT · pushed 2026-09-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7ziq67tw5ffuaefl GET https://markdownregistry.com/api/v1/resolve?ref=rolandbrecht/agent-skills/ast-grep GET https://markdownregistry.com/api/v1/blob/facf2f6e9932299b61487a1adee156d956c216aefbea9257324fc3a32077f607
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from rolandbrecht/agent-skills
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