ast-grep skillA
ast-grep is agent-read markdown (skill) from sparq-org/sparq: Understand code STRUCTURE without reading whole files — outline a large file to its signatures, structural-grep every impl of a trait, and find call sites — using ast-grep (tree-sitter structural matching) and the editor outline/LSP, and knowing WHEN to reach for ast-grep vs Grep vs LSP vs a full Read. Use on the 37-crate / ~568-file Rust workspace when a question is about code SHAPE (impls / call patterns / signatures / codemods) rather than an exact string. MANDATORY: install + verify ast-grep.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
How to install
mdr add sparq-org/sparq/ast-grep@git:20260622.ac19bb8mdr add sparq-org/sparq/ast-grep@sha256:e0b6a26a7ffba591Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_r3mbuw755er3l2gi)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260622.ac19bb8 latest | 2026-06-22 | ac19bb8 | 24,117 B | A | view · diff |
| git:20260621.9145181 | 2026-06-21 | 9145181 | 17,171 B | A | view · diff |
| git:20260621.a6faffe | 2026-06-21 | a6faffe | 16,357 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 (24117 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
sparq-org/sparq · 12 stars · license MIT · pushed 2026-09-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_r3mbuw755er3l2gi GET https://markdownregistry.com/api/v1/resolve?ref=sparq-org/sparq/ast-grep GET https://markdownregistry.com/api/v1/blob/e0b6a26a7ffba591caf9e99958b899a8943bfc4ee5f253cdea4231df5eb40bb1
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.