seonaru/nulnul-harness · evals/foundation-final-continuation/fixtures/lifecycle/.agents/skills/project-api-validation/SKILL.md

project-api-validation skillA

project-api-validation is agent-read markdown (skill) from seonaru/nulnul-harness: Apply this repository's webhook request-validation and error-code contract when API acceptance or rejection behavior changes..

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.

How to install

Latest version
mdr add seonaru/nulnul-harness/project-api-validation@git:20260902.749d57b
Exact content
mdr add seonaru/nulnul-harness/project-api-validation@sha256:ff647483d4f4cb6e

Pin 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_62opvxhytbkbwwvs.svg)](https://markdownregistry.com/a/art_62opvxhytbkbwwvs)

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Versions

versioncommittedcommitsizeaudit
git:20260902.749d57b latest2026-09-02 749d57b 752 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (752 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

GitHub

seonaru/nulnul-harness · 34 stars · license MIT · pushed 2026-09-10 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_62opvxhytbkbwwvs
GET https://markdownregistry.com/api/v1/resolve?ref=seonaru/nulnul-harness/project-api-validation
GET https://markdownregistry.com/api/v1/blob/ff647483d4f4cb6ea7cc70ae0f4032453399785fca03a9d1450082cd626f4d7b

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.