ast-grep SKILL.md skillA
ast-grep from code-yeongyu/oh-my-openagent is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add code-yeongyu/oh-my-openagent/ast-grep@git:20260914.52f863dPins git:20260914.52f863d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- code-yeongyu/oh-my-openagent
- Path
packages/shared-skills/skills/ast-grep/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260914.52f863d, committed Sep 14, 2026
- First version recorded
- Jun 16, 2026
- Size
- 13,371 bytes
- Repository stars
- 70,648
- License
- a license file GitHub does not identify
Searches and rewrites code by AST shape across 25 languages. Use when the target is a syntax pattern (every call/class/import shaped like X, a codemod, a YAML rule) rather than literal text; for plain strings, comments, or filenames, use rg.
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
`sg` (also installed as `ast-grep`) is an **AST-aware search and rewrite tool** across 25 languages. It treats your pattern as code, parses it the same way it parses your project, and matches structurally. It is the right tool whenever your question depends on **code shape** rather than text bytes.
This skill ships a Python wrapper at `scripts/ast_grep_helper.py` and platform install scripts at `install.sh` (POSIX) and `install.ps1` (Windows). The helper adds offline pattern validation, the two-pass write trick, and binary auto-resolution. Use it as your default entry point.
---
## OmO native: the ast-grep MCP tools (fastest path, no CLI needed)
OmO native also registers a bundled ast-grep MCP server. Its three tools are **deferred**: they are absent from the resident tool list and activate automatically the first time you call them by name — no `tool_search` round trip needed.
- `mcp__ast_grep_search({ pattern, language, paths })` — AST-shape search, the MCP equivalent of `sg run -p`. Prefer this over shelling out to `sg` for one-off lookups: no install, no PATH issues.
…Read the whole file at its exact version.
How to install
mdr add code-yeongyu/oh-my-openagent/ast-grep@sha256:2be8973cc11ddda5The line at the top of this page pins the label git:20260914.52f863d, 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_5hu4dtox3fpp4vck)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jun 16, 2026 and Sep 14, 2026, about one every 45 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260914.52f863d latest | 2026-09-14 | 52f863d | 13,371 B | A | view · diff |
| git:20260904.2790172 | 2026-09-04 | 2790172 | 12,261 B | A | view · diff |
| git:20260616.fec8db4 | 2026-06-16 | fec8db4 | 12,517 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 (13371 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
code-yeongyu/oh-my-openagent · 70,648 stars · license a license file GitHub does not identify · pushed 2026-11-03 · branch dev
API
GET https://markdownregistry.com/api/v1/artifacts/art_5hu4dtox3fpp4vck GET https://markdownregistry.com/api/v1/resolve?ref=code-yeongyu/oh-my-openagent/ast-grep GET https://markdownregistry.com/api/v1/blob/2be8973cc11ddda56da2cf74630c56561701ed1a40b329a5c4d895a1708e00d1
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 code-yeongyu/oh-my-openagent
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