api-contract-review SKILL.md skillA
api-contract-review from decebals/claude-code-java is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add decebals/claude-code-java/api-contract-review@git:20260828.702770aPins git:20260828.702770a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- decebals/claude-code-java
- Path
skills/api-contract-review/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260828.702770a, committed Aug 28, 2026
- Size
- 11,073 bytes
- Repository stars
- 759
- License
- MIT
Review REST API contracts for HTTP semantics, versioning, backward compatibility, and response consistency. Use when user asks "review API", "check endpoints", "REST review", or before releasing API changes.
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
# API Contract Review Skill
Audit REST API design for correctness, consistency, and compatibility.
## When to Use
- User asks "review this API" / "check REST endpoints"
- Before releasing API changes
- Reviewing PR with controller changes
- Checking backward compatibility
---
## Quick Reference: Common Issues
| Issue | Symptom | Impact |
|-------|---------|--------|
| Wrong HTTP verb | POST for idempotent operation | Confusion, caching issues |
| Missing versioning | `/users` instead of `/v1/users` | Breaking changes affect all clients |
| Entity leak | JPA entity in response | Exposes internals, N+1 risk |
| 200 with error | `{"status": 200, "error": "..."}` | Breaks error handling |
| Inconsistent naming | `/getUsers` vs `/users` | Hard to learn API |
---
## HTTP Verb Semantics
### Verb Selection Guide
| Verb | Use For | Idempotent | Safe | Request Body |
|------|---------|------------|------|--------------|
| GET | Retrieve resource | Yes | Yes | No |
| POST | Create new resource | No | No | Yes |
| PUT | Replace entire resource | Yes | No | Yes |
| PATCH | Partial update | No* | No | Yes |
| DELETE | Remove resource | Yes | No | Optional |
…Read the whole file at its exact version.
How to install
mdr add decebals/claude-code-java/api-contract-review@sha256:399304f39dd10040The line at the top of this page pins the label git:20260828.702770a, 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_p3pf7xaisup5bln3)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 28, 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 (11073 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
decebals/claude-code-java · 759 stars · license MIT · pushed 2026-09-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_p3pf7xaisup5bln3 GET https://markdownregistry.com/api/v1/resolve?ref=decebals/claude-code-java/api-contract-review GET https://markdownregistry.com/api/v1/blob/399304f39dd1004043111bfbb0e3eade8ef29c3d9397cddcb356d50e3988b7ee
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.
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