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api-design

Implement backend APIs: REST/GraphQL/gRPC/WebSocket/SSE/webhooks, auth, pagination, idempotency, retries, versioning, docs.

Skill by chnetajibc

IndexedMIT
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/chnetajibc-api-design-3d555e

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Implement backend APIs: REST/GraphQL/gRPC/WebSocket/SSE/webhooks, auth, pagination, idempotency, retries, versioning, docs. Use when building or changing endpoints. Contract theory lives in architecture/api-design.

Use cases: documents, design, backend, security

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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Network hosts it talks to 1

  • codeload.github.com · found in install command

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  • ~/.claude/skills/api-design

What's inside

Skill name
api-design
Description
Implement backend APIs: REST/GraphQL/gRPC/WebSocket/SSE/webhooks, auth, pagination, idempotency, retries, versioning, docs. Use when building or changing endpoints. Contract theory lives in architecture/api-design.
License
MIT
Instructions
23 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# api-design

Implement the contract: correct semantics per protocol, hardened edges, documented and tested behavior.

## Activate when

- Building or modifying endpoints, handlers, webhooks, or streaming APIs.

## Do NOT activate for

- Contract shaping/versioning policy — see `../../architecture/api-design/`.
- Authorization review — see `../api-security/`.

## Procedure

1. Protocol: REST by default; GraphQL for client-shaped reads, gRPC for service-to-service, WebSocket/SSE for push, webhooks for outbound events (idempotent receivers, signed, retried with backoff).
2. Semantics: correct status codes, ETags/conditional requests where caching matters, cursor pagination per contract.
3. Edges: runtime validation at boundaries, authn/authz on every route, rate limits, timeouts; retries with jitter + budgets, circuit breakers on dependencies.
4. Compatibility: additive changes; breaking changes versioned with migration notes and contract tests.
5. Docs: OpenAPI (or schema registry for GraphQL/gRPC) generated from code, with examples; every error `type` documented.
6. Verify: protocol-level tests (happy, validation, authz-cross-user, pagination, idempotent-retry, webhook-replay) green; docs render.

From chnetajibc/skill-repo, MIT.

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Last commit (this folder)
Sep 22, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
Repository
github.com/chnetajibc/skill-repo
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

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Cite this page

api-design skill. Agent Mart. https://agentmart.dev/skills/chnetajibc-api-design-3d555e (last updated 2026-10-24)