preflight SKILL.md skillA
preflight 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/preflight@git:20261001.8a3d242Pins git:20261001.8a3d242 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/preflight/SKILL.md- Versions recorded
- 15
- Latest version
- git:20261001.8a3d242, committed Oct 1, 2026
- First version recorded
- May 9, 2026
- Size
- 8,168 bytes
- Repository stars
- 51
- License
- MIT
Use before starting delivery work. Pre-implementation validation checklist to ensure readiness.
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
# Preflight Skill Pre-delivery validation checklist. Run before every implementation task. ## Checklist ### Constraints (ALWAYS FIRST) Before scoping any delivery work, establish constraints. Do not propose a plan before knowing the budget. - [ ] **Time budget**: "How much time do you have for this?" (hours, days, sprint length) - [ ] **Resource constraints**: Solo? Team? What skills are available? - [ ] **Fidelity**: Demo/prototype vs. production? Who is the audience? - [ ] **Dependencies**: Waiting on anything external? If time budget < 8 hours, scope aggressively — one vertical slice, no polish. If the initial plan exceeds the time budget, cut scope before presenting it to the user. **Re-forecast trigger (audit-triggered / emergent work).** Work that opens as "just address the recommendations", "quick fix", or any audit/assessment follow-up still gets a constraint pass — set an explicit estimate even when no one asked for one. Then, mid-session, **re-forecast when the work crosses ~2× the estimate or when no estimate was ever set**: stop, state actual-so-far vs estimate, and re-scope or re-confirm the budget before continuing. The failure this catches: emergent cycles… …
Read the whole file at its exact version.
How to install
mdr add haabe/mycelium/preflight@sha256:8015f5feaba2d885The line at the top of this page pins the label git:20261001.8a3d242, 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_qmeclrre733bzypz)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 15 versions of this file, between May 9, 2026 and Oct 1, 2026, about one every 10 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261001.8a3d242 latest | 2026-10-01 | 8a3d242 | 8,168 B | A | view · diff |
| git:20261001.f65f79b | 2026-10-01 | f65f79b | 8,153 B | A | view · diff |
| git:20260930.ab55808 | 2026-09-30 | ab55808 | 8,188 B | A | view · diff |
| git:20260930.a5584b6 | 2026-09-30 | a5584b6 | 8,117 B | A | view · diff |
| git:20260930.388c92e | 2026-09-30 | 388c92e | 7,988 B | A | view · diff |
| git:20260925.5400e27 | 2026-09-25 | 5400e27 | 7,627 B | A | view · diff |
| git:20260925.66003d9 | 2026-09-25 | 66003d9 | 7,524 B | A | view · diff |
| git:20260924.018e9b9 | 2026-09-24 | 018e9b9 | 7,425 B | A | view · diff |
| git:20260924.81540c9 | 2026-09-24 | 81540c9 | 6,905 B | A | view · diff |
| git:20260923.2f23ecf | 2026-09-23 | 2f23ecf | 6,409 B | A | view · diff |
| git:20260704.7639f18 | 2026-07-04 | 7639f18 | 5,435 B | A | view · diff |
| git:20260614.8bb980c | 2026-06-14 | 8bb980c | 5,435 B | A | view · diff |
| git:20260525.9fac942 | 2026-05-25 | 9fac942 | 4,573 B | A | view · diff |
| git:20260522.1825b22 | 2026-05-22 | 1825b22 | 4,263 B | A | view · diff |
| git:20260509.70c07fb | 2026-05-09 | 70c07fb | 4,249 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 (8168 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 · 51 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qmeclrre733bzypz GET https://markdownregistry.com/api/v1/resolve?ref=haabe/mycelium/preflight GET https://markdownregistry.com/api/v1/blob/8015f5feaba2d885d50f9f39023aea1fda448ace0d0af1a08e3b8cb6aab909f8
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.