spec-update SKILL.md skillA
spec-update from yarlson/yarstack is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add yarlson/yarstack/spec-update@git:20261017.2f2e03bPins git:20261017.2f2e03b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- yarlson/yarstack
- Path
plugins/yarstack/skills/spec-update/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261017.2f2e03b, committed Oct 17, 2026
- First version recorded
- Jul 17, 2026
- Size
- 1,521 bytes
- Repository stars
- 3
- License
- MIT
Make a minimal evidence-backed update to a non-plan product, architecture, API, schema, or behavior contract. Use when implementation or validation cannot determine correctness from the current authoritative contract.
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
# Specification Update Correct an authoritative semantic contract only when current work depends on it. ## Workflow 1. Identify the missing or incorrect contract, its canonical document and owner, and the current task it blocks. 2. Use `plan-update` for implementation-plan mechanics and `docs-drift-review` for ordinary prose drift. 3. Decide whether the change is a clarification or a new decision. Apply a clarification that code, tests, or other authoritative evidence supports. A new product or architecture decision belongs to the user or the named owner: stop and ask, or use `architecture-refine` when the user is available for it. 4. Confirm authority before editing linked documents outside the repository or requested scope. 5. Apply only the minimum supported correction in the document's existing structure and style. 6. State the downstream acceptance or validation effect, and the compatibility impact when the contract is published to other consumers. Then return to the invoking task. Do not create speculative features, use specifications as implementation logs, rewrite unrelated sections, or silently invent behavior. …
Read the whole file at its exact version.
How to install
mdr add yarlson/yarstack/spec-update@sha256:79bf05380187a9fbThe line at the top of this page pins the label git:20261017.2f2e03b, 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_m5z4vtu6hbntqmtl)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jul 17, 2026 and Oct 17, 2026, about one every 46 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261017.2f2e03b latest | 2026-10-17 | 2f2e03b | 1,521 B | A | view · diff |
| git:20260718.188cd11 | 2026-07-18 | 188cd11 | 1,391 B | A | view · diff |
| git:20260717.dc9a72d | 2026-07-17 | dc9a72d | 1,194 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 (1521 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
yarlson/yarstack · 3 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_m5z4vtu6hbntqmtl GET https://markdownregistry.com/api/v1/resolve?ref=yarlson/yarstack/spec-update GET https://markdownregistry.com/api/v1/blob/79bf05380187a9fb3aab9aa324b67b59498b842ad9fc9afc0578553e4959db12
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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