skill-creator 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.
skill-creator from cap-go/capgo-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cap-go/capgo-skills/skill-creator@git:20261011.86834d4Pins git:20261011.86834d4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cap-go/capgo-skills
- Path
plugins/skill-authoring/skills/skill-creator/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261011.86834d4, committed Oct 11, 2026
- First version recorded
- May 1, 2026
- Size
- 7,843 bytes
- Repository stars
- 74
- License
- MIT
Guides authoring, reviewing, and validating agent skills (SKILL.md + metadata.json + references/ + scripts/) in this Capgo skills repository and similar ones. Covers trigger and negative-trigger design, lean SKILL.md with a when-to-load reference index, traps over basics, verification and error-handling sections, version tagging of facts, subagent-oriented skills (main-agent vs subagent split), optional when_to_use frontmatter, inline snapshots with allowed-tools, skillgrade evals, and this…
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
# Skill Authoring Write skills that load at the right moment, teach what the model does not already know, and prove their own results. ## When to Use TRIGGER when: - The user creates a skill directory, or asks to improve, review, or split an existing skill. - A skill triggers too often, too rarely, or collides with a sibling skill. - `bun run lint-skills` fails, or a skill must be registered in a plugin or the marketplace. - The user wants a skillgrade eval for a skill. Do not use when: - The user is writing app docs, a README, a changelog, or marketing copy. - The user is editing library or plugin source that is not a skill. ## Reference Index Only load a reference when its topic is in play. | File | Load when | | --- | --- | | `references/repo-layout.md` | Adding, renaming, or registering a skill in this repository, mirroring into `plugins/`, or reading lint errors | | `references/authoring-patterns.md` | Writing the body: trigger design, reference index, traps, verification, version tags, subagent skills, inline snapshots | ## Procedure ### 1. Scope the skill - Write one sentence: "Load this when <concrete situation>, so the agent can <outcome>." …
Read the whole file at its exact version.
How to install
mdr add cap-go/capgo-skills/skill-creator@sha256:9192a070ffac53caThe line at the top of this page pins the label git:20261011.86834d4, 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_wbolskojfjzpcryv)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between May 1, 2026 and Oct 11, 2026, about one every 81 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261011.86834d4 latest | 2026-10-11 | 86834d4 | 7,843 B | A | view · diff |
| git:20260611.b65524b | 2026-06-11 | b65524b | 3,771 B | A | view · diff |
| git:20260501.ed3e92e | 2026-05-01 | ed3e92e | 2,761 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 (7843 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
cap-go/capgo-skills · 74 stars · license MIT · pushed 2026-10-17 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_wbolskojfjzpcryv GET https://markdownregistry.com/api/v1/resolve?ref=cap-go/capgo-skills/skill-creator GET https://markdownregistry.com/api/v1/blob/9192a070ffac53cad15115ffb92f95e3f3c4bb79ba12dbe0ade4d889b526725a
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.
More from cap-go/capgo-skills
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