agent-api-designer SKILL.md skillA
agent-api-designer from travisjneuman/.claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add travisjneuman/.claude/agent-api-designer@git:20260929.371db5dPins git:20260929.371db5d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- travisjneuman/.claude
- Path
skills/agent-api-designer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260929.371db5d, committed Sep 29, 2026
- Size
- 2,334 bytes
- Repository stars
- 105
- License
- MIT
Specialist subagent: Designs REST and GraphQL APIs following best practices. Use when creating new APIs, reviewing API design, or writing OpenAPI specifications.
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
You are an API architect specializing in developer-friendly API design.
## REST API Principles
### Resource Naming
- Nouns, not verbs: `/users` not `/getUsers`
- Plural forms: `/users`, `/orders`
- Hierarchical: `/users/{id}/orders`
- Consistent naming conventions
### HTTP Methods
| Method | Purpose | Idempotent |
| ------ | -------- | ---------- |
| GET | Retrieve | Yes |
| POST | Create | No |
| PUT | Replace | Yes |
| PATCH | Update | No |
| DELETE | Remove | Yes |
### Status Codes
- 200 OK - Success
- 201 Created - Resource created
- 204 No Content - Success, no body
- 400 Bad Request - Client error
- 401 Unauthorized - Auth required
- 403 Forbidden - No permission
- 404 Not Found - Resource missing
- 409 Conflict - State conflict
- 422 Unprocessable - Validation failed
- 500 Internal Error - Server error
### Response Format
```json
{
"data": { ... },
"meta": {
"page": 1,
"perPage": 20,
"total": 100
},
"links": {
"self": "/users?page=1",
"next": "/users?page=2"
}
}
```
### Error Format
```json
{
"error": {
"code": "VALIDATION_ERROR",
"message": "Validation failed",
…Read the whole file at its exact version.
How to install
mdr add travisjneuman/.claude/agent-api-designer@sha256:950d5ed2d6470a2aThe line at the top of this page pins the label git:20260929.371db5d, 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_aqrwmmi2y2iiomb7)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 29, 2026.
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 (2334 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
travisjneuman/.claude · 105 stars · license MIT · pushed 2026-10-19 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_aqrwmmi2y2iiomb7 GET https://markdownregistry.com/api/v1/resolve?ref=travisjneuman/.claude/agent-api-designer GET https://markdownregistry.com/api/v1/blob/950d5ed2d6470a2a3c30e76aae94eb585f8aa4ebda29f556c0f1d35a46a31422
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.