fable-validate skillA
fable-validate is agent-read markdown (skill) from richkuo/rk-skills: Use when the user wants a GitHub issue validated by a Fable 5.1 subagent. Spins up a read-only subagent running on Fable 5.1 that executes the validate-issue procedure (claim tracing, architecture/consistency checks, complexity score), then relays the verdict back to the main agent, which presents it and takes any follow-on action (update issue, work on issue). Trigger on "/fable-validate", "fable validate <issue>", or "validate this with fable"..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# fable-validate Delegate issue validation to a **Fable 5.1** subagent, then act on its verdict in the main agent. The subagent only validates — it never edits files or the issue; the main agent handles all follow-on actions. ## Input Same as `validate-issue`: - Full URL: `https://github.com/<owner>/<repo>/issues/<N>` - Short form: `#<N>` or bare `<N>` (current repo) - `owner/repo#N` - **Nothing** — default to the latest open issue in the current repo. ## Steps ### 1. Resolve the validation procedure and the issue Locate the `validate-issue` SKILL.md the subagent must follow — prefer the project-local copy over the global one, since a repo may customize the procedure: 1. `<repo>/.claude/skills/validate-issue/SKILL.md` (if it exists) 2. `~/.claude/skills/validate-issue/SKILL.md` 3. Any other install location — search by name, e.g. `ls ~/.claude/plugins/*/skills/validate-issue/SKILL.md` (plugin-marketplace installs live under a plugin directory, not `~/.claude/skills/`). Record the absolute path. If none of these resolves, stop and tell the user. …
Read the whole file at its exact version.
How to install
mdr add richkuo/rk-skills/fable-validate@git:20260901.6c08e4bmdr add richkuo/rk-skills/fable-validate@sha256:e34e5094f2dc84b5Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_rp6kwr7i65m7g345)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260901.6c08e4b latest | 2026-09-01 | 6c08e4b | 6,076 B | A | view · diff |
| git:20260817.0fe4f56 | 2026-08-17 | 0fe4f56 | 6,056 B | A | view · diff |
| git:20260814.b683395 | 2026-08-14 | b683395 | 6,794 B | A | view · diff |
| git:20260814.d61720d | 2026-08-14 | d61720d | 6,449 B | A | view · diff |
| git:20260705.5e5b326 | 2026-07-05 | 5e5b326 | 6,389 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 (6076 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
richkuo/rk-skills · 49 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rp6kwr7i65m7g345 GET https://markdownregistry.com/api/v1/resolve?ref=richkuo/rk-skills/fable-validate GET https://markdownregistry.com/api/v1/blob/e34e5094f2dc84b5aea6e1af2710e15e927d9ccaee98108cfdf7073a7c01cf70
Your agent 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.