brain-scan skillA
brain-scan is agent-read markdown (skill) from getedgehq/skills: Scan authorized Claude, Codex, or OpenCode session logs for recurring correction themes, reconstruct real tasks, and measure whether a selected Skill improves the actual output in a blinded no-Skill versus explicitly-loaded comparison. Use when someone asks for an agent brain scan, wants to know which Skills materially help their own work, or asks to test a Skill against their real sessions..
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.
What the file says
# Brain Scan Find the recurring tasks this person's agents actually perform, then measure whether relevant Skills improve the real outputs when explicitly loaded. ## Choose a mode - **Fast (default):** identify the highest-signal recurring task from the session history and run 3 valid controlled pairs. Use for a quick directional answer and first Skill recommendation. - **Deep:** cover at least 3 recurring task families and complete at least 10 valid controlled pairs in total. Use when the user asks for a comprehensive scan, a broader capability map, or stronger evidence before changing the agent setup. Ask which mode only when the user has not indicated depth and the extra Deep runtime or model usage would be material. Otherwise default to Fast. Invalid, contaminated, or timed-out pairs do not count toward either minimum. ## Default assessment Use exactly two arms: - `base`: the selected Skill is absent. - `loaded`: the same model, task, fixtures, tools, limits, and ordinary context, with the selected Skill's frozen `SKILL.md` content supplied before work begins. Do not add a discovery arm. Do not replace this comparison with current setup versus an …
Read the whole file at its exact version.
How to install
mdr add getedgehq/skills/brain-scan@git:20260921.4b868a5mdr add getedgehq/skills/brain-scan@sha256:f1d88202c42a21bePin 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_pt5smdn42oj6latr)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260921.4b868a5 latest | 2026-09-21 | 4b868a5 | 5,736 B | A | view · diff |
| git:20260921.8587e96 | 2026-09-21 | 8587e96 | 5,298 B | A | view · diff |
| git:20260920.860f3dd | 2026-09-20 | 860f3dd | 4,013 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 (5736 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
getedgehq/skills · 3 stars · license Apache-2.0 · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pt5smdn42oj6latr GET https://markdownregistry.com/api/v1/resolve?ref=getedgehq/skills/brain-scan GET https://markdownregistry.com/api/v1/blob/f1d88202c42a21be11d41441527eae3bef860872ba8eaf9a769a0943b40d4f65
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