captain SKILL.md skillA
captain from garrytan/gstack is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add garrytan/gstack/captain@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- garrytan/gstack
- Path
captain/SKILL.md- Versions recorded
- 6
- Latest version
- v1.0.0, committed Nov 3, 2026
- First version recorded
- Oct 26, 2026
- Size
- 27,576 bytes
- Repository stars
- 138,879
- License
- MIT
Run a crew of coding agents from one controller (also /crew): lanes send READY blocks and never merge; the controller merges through trains, keeps the digest, relays approvals, fixes flakes daily. (gstack).
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
<!-- AUTO-GENERATED from SKILL.md.tmpl — do not edit directly --> <!-- Regenerate: bun run gen:skill-docs --> ## Shared preamble (load first) This skill follows gstack shared preamble `4e82fa4c839f` (AskUserQuestion format, voice, writing, completeness and completion rules). If your Read of that file, headed by this id, is still in context, do not read it again; otherwise Read `~/.claude/skills/gstack/captain/sections/preamble.md` in full before the command below. A section or subsection here with a shared heading replaces the shared one. ## Preamble (run first) ```bash ~/.claude/skills/gstack/bin/gstack-skill-start --skill "captain" --model "claude" ``` Read the echoed `KEY: value` STATUS lines — they drive every preamble rule below. **Degraded mode:** if `SKILL_START_PROTO: 1` is missing from the output (script absent, stale install, or a different protocol number), apply safe defaults: treat `SESSION_KIND` as `interactive`, do NOT assume Conductor, skip onboarding/telemetry steps (their gates are marker-based, so consent and onboarding prompts are DEFERRED to the next healthy run — never lost), tell …
Read the whole file at its exact version.
How to install
mdr add garrytan/gstack/captain@sha256:d2e0765e49209226The line at the top of this page pins the label v1.0.0, 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_3byyv4ftfpoawynh)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Oct 26, 2026 and Nov 3, 2026, about one every day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-11-03 | 5f705f3 | 27,576 B | A | view · diff |
| v1.0.0 | 2026-11-02 | 5209e92 | 27,459 B | A | view · diff |
| v1.0.0 | 2026-11-01 | 44fb937 | 27,459 B | A | view · diff |
| v1.0.0 | 2026-10-31 | 99706a4 | 27,210 B | A | view · diff |
| v1.0.0 | 2026-10-31 | 6748d54 | 27,142 B | A | view · diff |
| v1.0.0 | 2026-10-26 | 4d48d39 | 46,863 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 (27576 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
garrytan/gstack · 138,879 stars · license MIT · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3byyv4ftfpoawynh GET https://markdownregistry.com/api/v1/resolve?ref=garrytan/gstack/captain GET https://markdownregistry.com/api/v1/blob/d2e0765e492092267b89089a4e8901cbb7dfa9492e05b98f987ddf0e799ea4e1
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.