castmate SKILL.md skillA
castmate from coreyhaines31/makerskills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add coreyhaines31/makerskills/castmate@v0.1.0Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- coreyhaines31/makerskills
- Path
skills/castmate/SKILL.md- Versions recorded
- 5
- Latest version
- v0.1.0, committed Nov 3, 2026
- First version recorded
- Nov 3, 2026
- Size
- 12,972 bytes
- Repository stars
- 882
- License
- MIT
When you want to pull in the right AI model for the right job: hand a task to another agent CLI (Codex, Claude, Gemini, Amp, OpenCode, Cursor, Kiro, Antigravity), or send one prompt to several at once for independent opinions, then synthesize. Delegate mode gives one castmate the job, optionally with write access ('have codex write the migration'). Fan-out mode runs read-only reviews in parallel. Rounds mode lets castmates build on and challenge each other's findings. Calls the official CLIs…
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
# /castmate — the right model for the right job You are the host agent. Castmates are other AI coding CLIs installed on this machine. A small script, `scripts/castmate.py` in this skill's folder, runs them. You decide who gets cast, write the prompt, read what comes back, and tell the user what it means. Adapted from [counselors](https://github.com/aarondfrancis/counselors) by Aaron Francis (MIT). Discovery, prompt writing, and synthesis moved from code into this workflow, and the model list moved into config so it doesn't go stale. ```bash python3 <skill-dir>/scripts/castmate.py list # castmates, groups, install + read-only status python3 <skill-dir>/scripts/castmate.py test codex fable # each must reply "OK" python3 <skill-dir>/scripts/castmate.py run -c codex-sol-high,fable-high -f prompt.md --json ``` `<skill-dir>` is this skill's install folder. In Claude Code it is the skill's base directory. ## First run …
Read the whole file at its exact version.
How to install
mdr add coreyhaines31/makerskills/castmate@sha256:c7709b8ad575d6b7The line at the top of this page pins the label v0.1.0, 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_egtutxhrhtjmotoq)
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Versions
The registry has recorded 5 versions of this file, all committed on Nov 3, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.1.0 latest | 2026-11-03 | e1627c2 | 12,972 B | A | view · diff |
| v0.1.0 | 2026-11-03 | 22f354a | 12,805 B | A | view · diff |
| v0.1.0 | 2026-11-03 | b667b52 | 12,357 B | A | view · diff |
| v0.1.0 | 2026-11-03 | f8c5f65 | 11,144 B | A | view · diff |
| v0.1.0 | 2026-11-03 | 95e3d00 | 9,798 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 (12972 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
coreyhaines31/makerskills · 882 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_egtutxhrhtjmotoq GET https://markdownregistry.com/api/v1/resolve?ref=coreyhaines31/makerskills/castmate GET https://markdownregistry.com/api/v1/blob/c7709b8ad575d6b7eb8850499b393b7ae55db365994f560acc2f46990e222e79
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.