bm25 skillA
bm25 is agent-read markdown (skill) from oaustegard/claude-skills: Ranked content search over a text corpus you point it at, using BM25 (via xhluca/bm25s). Corpus-agnostic: cloned repos, project knowledge stores, uploaded files and archives, any local directory. Stateless — an in-memory index per invocation, no cache. Use for "rank these documents", "search this corpus", "which files are most about X", "find content about Y", or any multi-word concept query against a known body of text where grep would return everything or nothing. Needs a corpus on disk. Not f.
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 oaustegard/claude-skills/bm25@v0.2.0mdr add oaustegard/claude-skills/bm25@sha256:61c97c84a8dd91eePin 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_pqn2a6sqsfx2sec2)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.2.0 latest | 2026-08-25 | 4fcc13f | 7,012 B | A | view · diff |
| v0.1.2 | 2026-05-20 | b09ab51 | 6,915 B | A | view · diff |
| v0.1.1 | 2026-05-20 | e5f8ba8 | 5,704 B | A | view · diff |
| v0.1.0 | 2026-05-20 | 188997b | 5,650 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 (7012 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
oaustegard/claude-skills · 147 stars · license MIT · pushed 2026-09-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pqn2a6sqsfx2sec2 GET https://markdownregistry.com/api/v1/resolve?ref=oaustegard/claude-skills/bm25 GET https://markdownregistry.com/api/v1/blob/61c97c84a8dd91eea9b9d0b8df25f3cd93dd505b9925212f7d25103573e52626