api-design

Installation
SKILL.md

API Design

Comprehensive API design patterns covering REST/GraphQL framework design, versioning strategies, and RFC 9457 error handling. Each category has individual rule files in rules/ loaded on-demand.

Quick Reference

Category Rules Impact When to Use
API Framework 3 HIGH REST conventions, resource modeling, OpenAPI specifications
Versioning 3 HIGH URL path versioning, header versioning, deprecation/sunset policies
Error Handling 4 HIGH RFC 9457 Problem Details, agent-facing errors, validation errors, error type registries
GraphQL 2 HIGH Strawberry code-first, DataLoader, permissions, subscriptions
gRPC 2 HIGH Protobuf services, streaming, interceptors, retry
Streaming 2 HIGH SSE endpoints, WebSocket bidirectional, async generators

| Integrations | 2 | HIGH | Messaging platforms (WhatsApp, Telegram), Payload CMS patterns |

Total: 18 rules across 7 categories

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First Seen
Mar 11, 2026