coco-research/coco · skills/api-design-principles/SKILL.md

api-design-principles skillA

api-design-principles is agent-read markdown (skill) from coco-research/coco: Use when designing a new REST or GraphQL API, reviewing an API spec before implementation, setting team API standards, or migrating REST to GraphQL. Covers resources, HTTP semantics, pagination, error handling, and pitfalls..

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 coco-research/coco/api-design-principles@git:20260914.e75f220
Exact content
mdr add coco-research/coco/api-design-principles@sha256:6cd1989db136df0d

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_zyx34zapgso2bzc7.svg)](https://markdownregistry.com/a/art_zyx34zapgso2bzc7)

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Versions

versioncommittedcommitsizeaudit
git:20260914.e75f220 latest2026-09-14 e75f220 13,589 BA view · diff
git:20260802.1479e322026-08-02 1479e32 13,742 BA view · diff
git:20260426.d53cc6c2026-04-26 d53cc6c 13,722 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 (13589 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

coco-research/coco · 221 stars · license NOASSERTION · pushed 2026-09-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_zyx34zapgso2bzc7
GET https://markdownregistry.com/api/v1/resolve?ref=coco-research/coco/api-design-principles
GET https://markdownregistry.com/api/v1/blob/6cd1989db136df0ddcf582df907ed89b95e333aebf61525ce851bb2b62a4b542