canvas-health SKILL.md skillA
canvas-health from haabe/mycelium is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add haabe/mycelium/canvas-health@git:20261011.ead7061Pins git:20261011.ead7061 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- haabe/mycelium
- Path
plugins/mycelium/skills/canvas-health/SKILL.md- Versions recorded
- 25
- Latest version
- git:20261011.ead7061, committed Oct 11, 2026
- First version recorded
- Aug 31, 2026
- Size
- 71,114 bytes
- Repository stars
- 47
- License
- MIT
Lint canvas files for staleness, missing fields, inconsistent evidence types, and orphaned references. Run periodically or before major transitions.
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
# Canvas Health Check
Audit the canvas knowledge base for quality, consistency, and completeness. The canvas is Mycelium's source of truth -- its quality directly determines agent output quality (Raschka: "context quality = model quality").
## When to Use
- Before any diamond records a decision (called automatically by `/mycelium:diamond-assess`)
- After a period of inactivity (>7 days since last canvas update)
- When agent output quality seems to degrade
- After onboarding a new team member (ensures canvas is self-explanatory)
- Proactively: run periodically to catch silent drift
## Workflow
1. **Load project configuration**:
- Read `.claude/diamonds/active.yml` for `product_type` and `project_type`
- Read `${CLAUDE_PLUGIN_ROOT}/engine/canvas-guidance.yml` for required/recommended/optional files per project type
2. **Check file presence**:
- For each **required** canvas file: does it exist? Is it non-empty (>50 bytes)?
- For each **recommended** canvas file: does it exist? Flag as gap if missing.
- Report: `N/M required files present, K recommended files missing`
3. **Check `_meta` blocks**:
- For each existing canvas file, check for `_meta:` block
…Read the whole file at its exact version.
How to install
mdr add haabe/mycelium/canvas-health@sha256:5d2feba61f570150The line at the top of this page pins the label git:20261011.ead7061, 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_omvetd6kgowjkupe)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 25 versions of this file, between Aug 31, 2026 and Oct 11, 2026, about one every 2 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261011.ead7061 latest | 2026-10-11 | ead7061 | 71,114 B | A | view · diff |
| git:20261007.33e0656 | 2026-10-07 | 33e0656 | 69,771 B | A | view · diff |
| git:20261002.f23b4c7 | 2026-10-02 | f23b4c7 | 69,756 B | A | view · diff |
| git:20261001.39266c6 | 2026-10-01 | 39266c6 | 69,759 B | A | view · diff |
| git:20260924.81540c9 | 2026-09-24 | 81540c9 | 69,764 B | A | view · diff |
| git:20260922.9deeaa7 | 2026-09-22 | 9deeaa7 | 68,804 B | A | view · diff |
| git:20260921.dd3a0f3 | 2026-09-21 | dd3a0f3 | 67,438 B | A | view · diff |
| git:20260921.e591437 | 2026-09-21 | e591437 | 65,613 B | A | view · diff |
| git:20260917.e5adaba | 2026-09-17 | e5adaba | 64,416 B | A | view · diff |
| git:20260915.6281887 | 2026-09-15 | 6281887 | 63,510 B | A | view · diff |
| git:20260915.f51a1e7 | 2026-09-15 | f51a1e7 | 63,042 B | A | view · diff |
| git:20260915.1bfb69b | 2026-09-15 | 1bfb69b | 62,027 B | A | view · diff |
| git:20260915.3c59b75 | 2026-09-15 | 3c59b75 | 60,986 B | A | view · diff |
| git:20260915.1ecf095 | 2026-09-15 | 1ecf095 | 58,588 B | A | view · diff |
| git:20260915.ae6b011 | 2026-09-15 | ae6b011 | 57,572 B | A | view · diff |
| git:20260914.c2bb717 | 2026-09-14 | c2bb717 | 57,161 B | A | view · diff |
| git:20260910.7b0ec7e | 2026-09-10 | 7b0ec7e | 55,580 B | A | view · diff |
| git:20260910.aead29f | 2026-09-10 | aead29f | 54,654 B | A | view · diff |
| git:20260909.535cba7 | 2026-09-09 | 535cba7 | 53,624 B | A | view · diff |
| git:20260909.a7652c1 | 2026-09-09 | a7652c1 | 52,799 B | A | view · diff |
| git:20260903.7411aa9 | 2026-09-03 | 7411aa9 | 52,107 B | A | view · diff |
| git:20260903.00a8d89 | 2026-09-03 | 00a8d89 | 50,826 B | A | view · diff |
| git:20260901.807bd7e | 2026-09-01 | 807bd7e | 49,263 B | A | view · diff |
| git:20260831.5f2e04f | 2026-08-31 | 5f2e04f | 47,854 B | A | view · diff |
| git:20260831.429bd9c | 2026-08-31 | 429bd9c | 46,291 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 (71114 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
haabe/mycelium · 47 stars · license MIT · pushed 2026-10-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_omvetd6kgowjkupe GET https://markdownregistry.com/api/v1/resolve?ref=haabe/mycelium/canvas-health GET https://markdownregistry.com/api/v1/blob/5d2feba61f57015020e85567c4ec6fff75d4774c0ecfec5bdd6f87343ee9e15e
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.