mapping-codebases SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
mapping-codebases from oaustegard/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add oaustegard/claude-skills/mapping-codebases@v0.9.0Pins v0.9.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- oaustegard/claude-skills
- Path
mapping-codebases/SKILL.md- Versions recorded
- 5
- Latest version
- v0.9.0, committed Jul 29, 2026
- First version recorded
- Feb 28, 2026
- Size
- 2,088 bytes
- Repository stars
- 158
- License
- MIT
DEPRECATED — superseded by tree-sitting. This skill generated persistent _MAP.md files; tree-sitting does the same AST extraction at runtime (~700ms for 250 files) with no artifact to write, commit, or keep in sync. Use tree-sitting for "map this codebase", "explore repo", "understand structure", or any code navigation task. The final working version is archived at release mapping-codebases-v0.8.0.
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
# Mapping Codebases (deprecated) Use [tree-sitting](../tree-sitting/SKILL.md) instead. ## Why This skill wrote `_MAP.md` files to disk — a persisted symbol inventory per directory, generated once and read many times. That tradeoff made sense when scanning was expensive. It isn't: tree-sitting parses a 250-file repo in about 700ms and answers queries against the in-memory AST in under a millisecond. A persisted map costs what a runtime scan does not — it goes stale, it needs regenerating, it gets committed, and it must be excluded from every other tool that walks the tree. Nothing was gained for that. ## Replacement commands ```bash TREESIT=/mnt/skills/user/tree-sitting/scripts/treesit.py # Was: codemap.py /path/to/repo → root orientation python3 $TREESIT /path/to/repo # Was: reading every _MAP.md in the tree → full inventory python3 $TREESIT /path/to/repo --depth=-1 --detail=sparse # Was: grepping _MAP.md for a symbol → direct lookup python3 $TREESIT /path/to/repo --no-tree 'find:parse_input' ``` ## The archived version The last working release is [mapping-codebases-v0.8.0](https://github.com/oaustegard/claude-skills/releases/tag/mapping-codebases-v0.8.0) …
Read the whole file at its exact version.
How to install
mdr add oaustegard/claude-skills/mapping-codebases@sha256:33e6dde9445a94efThe line at the top of this page pins the label v0.9.0, 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_tun2caid4khberav)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Feb 28, 2026 and Jul 29, 2026, about one every 38 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.9.0 latest | 2026-07-29 | 9141df6 | 2,088 B | A | view · diff |
| v0.8.0 | 2026-03-31 | d643331 | 4,880 B | A | view · diff |
| v0.7.1 | 2026-03-24 | df89673 | 4,519 B | A | view · diff |
| v0.7.1 | 2026-03-24 | 671113d | 4,168 B | A | view · diff |
| v0.7.0 | 2026-02-28 | 2f8bd07 | 4,168 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 (2088 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 · 158 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tun2caid4khberav GET https://markdownregistry.com/api/v1/resolve?ref=oaustegard/claude-skills/mapping-codebases GET https://markdownregistry.com/api/v1/blob/33e6dde9445a94efe13a1928269290c28b25ec6500cd8bbc963136da216b30ae
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.
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