Best API design skills, page 5

Test payment and checkout flows end to end against PSP sandboxes — Stripe first, with the general pattern for Adyen/Braintree/PayPal.

petrkindlmann/qa-skills

Expert API designer for REST, GraphQL, gRPC architectures. An agent skill from curiositech/some_claude_skills.

curiositech/some_claude_skills

A skill your agent uses when you design or change an endpoint's errors, status codes, pagination, idempotency or concurrency behaviour — one error shape, the status-code table, bounded lists, safe…

makifbaysal/tasktrooper

Migrate a TypeScript codebase to MoonBit on the js target while keeping the same JavaScript API contract, using mizchi/js (JS/Web/Node bindings), mizchi/x (cross-target async backend…

mizchi/skills

Generate API contracts and OpenAPI specifications from code or design documents.

jeremylongshore/tons-of-skills-marketplace

REST/GraphQL/gRPC API design best practices. An agent skill from majiayu000/spellbook.

majiayu000/spellbook

Generates complete, production-ready REST API endpoint specifications for any system or domain the user describes.

majiayu000/claude-skill-registry

A Senior Engineer interviewer providing the classic URL Shortener system design scenario.

PrepLabsAI/InterviewMentor

Design backend architecture for implementation with API contracts, data model changes, service boundaries, security, and observability.

itseffi/agentic-os

The Contracts & Security review perspective for PostHog Review.

PostHog/posthog

Dynamic multi-repo and monorepo awareness for Claude Code. An agent skill from alinaqi/maggy.

alinaqi/maggy

Writing developer-facing prose that can be skimmed first and trusted enough to finish — READMEs, guides, tutorials, reference docs, proposals, PR descriptions, release notes.

citypaul/.dotfiles

Diagnose, review, operate, or deploy a generic rolecard workshop made of a static catalog, package gateway, object storage, OAuth ownership, review workflow, and reverse proxy.

LiarMTTT/TavernWeave

Architecture knowledge reference covering API design, security architecture, cloud-native patterns, caching strategies, message queues, and data security.

telagod/code-abyss

Generate multiple radically different interface designs for a module using parallel sub-agents, then compare trade-offs.

danielvm-git/bigpowers

Operational rubric that turns "don't make AI slop" into observable properties, severity levels, evidence requirements, and repair actions for interface design.

waybarrios/opencode-power-pack

Run the Azure SDK generation pipeline for a release plan and create the generated SDK pull requests, for one language or for all languages.

Azure/azure-sdk-tools

Automatically fix Azure SDK CI/CD pipeline failures by applying code changes and verifying locally.

Azure/azure-sdk-tools

Golang struct and interface design patterns — composition, embedding, type assertions, type switches, interface segregation, dependency injection via interfaces, struct field tags, and pointer vs…

aiskillstore/marketplace

Quick reference for RESTful API design patterns, HTTP semantics, caching, and rate limiting.

aiskillstore/marketplace

A skill your agent uses when designing REST or GraphQL APIs, defining endpoints, implementing pagination/filtering, handling API versioning, or establishing API documentation with OpenAPI/Swagger.

MadAppGang/claude-code

Design and implement integration architectures connecting financial systems — APIs, FIX protocol, ISO 20022, event-driven patterns, batch feeds, idempotency, and resilience.

JoelLewis/finance_skills

Principles and checklists for designing and reviewing REST and GraphQL APIs; use when defining or evaluating API contracts (endpoints/schemas), naming, error models, pagination, versioning, and REST…

aipoch/medical-research-skills

前后端接口契约安全规范，适用于接口新增或调整、联调、列表分页异常与临时兼容治理；用于避免响应结构漂移被前端兼容长期掩盖。

doccker/cc-use-exp

API contract testing, authentication flows, rate limit handling, and error scenario coverage for n8n integrations with external services.

proffesor-for-testing/agentic-qe

Performs deep architectural analysis of a specified module, directory, or feature area by examining structural coupling, data flow, concurrency patterns, risk, and SOLID alignment.

testdouble/han

Designs the contract for an API change inside one codebase — a component's props, a function surface, URL or query parameters, an event payload, or a module boundary — through a discovery pass, an…

testdouble/han

Build work collaboratively in reviewable pieces, handing each piece back for review before starting the next, so the person stays in the lead and steers while the work happens instead of reviewing a…

testdouble/han

A skill your agent uses when adding or changing routes, schemas, or plugins in this Fastify API — keep endpoints validated, typed, and testable.

johnku2011/boilerplates-with-ai-skills

Comprehensive backend development workflow that orchestrates expert analysis, architecture design, implementation, and deployment using the integrated toolset.

julianromli/opencode-template

API design: naming, versioning, pagination, idempotency, OpenAPI, error contracts and safe retries.

softspark/ai-toolkit

Generates and compares parallel interface designs (Ousterhout 'Design It Twice').

softspark/ai-toolkit

Deterministically compare OpenAPI JSON operations with implementation and observation inventories to expose undocumented, unimplemented, unexercised, and security-declaration coverage gaps.

cyberful/cyberful

Review a PR through the CodeReviewCorrectness persona. An agent skill from eric-tramel/moraine.

eric-tramel/moraine

Review SwiftUI code for iOS/watchOS Human Interface Guidelines compliance, font usage, Dynamic Type support, and accessibility.

gustavscirulis/snapgrid

Migrate Adobe integrations away from Service Account JWT, Photoshop v1, retired Lightroom Firefly Services, or drifting SDK/API contracts with canaries and rollback.

jeremylongshore/tons-of-skills-marketplace

Migrate an Attio integration through a contract-led inventory, OpenAPI and documentation diff, shadow validation, canary rollout, reconciliation, and tested rollback.

jeremylongshore/tons-of-skills-marketplace

Migrate Bright Data SDK, API, product, or response-header contracts with fixture evidence and a reversible canary.

jeremylongshore/tons-of-skills-marketplace

Establish a least-privilege Notion connection and tested API contract without leaking credentials.

jeremylongshore/tons-of-skills-marketplace

Upgrade a Notion integration across SDK or API contracts with inventory, compatibility tests, staged rollout, and rollback.

jeremylongshore/tons-of-skills-marketplace

Design a Runway text-to-video job from the current model-discriminated API contract and preserve its asynchronous evidence.

jeremylongshore/tons-of-skills-marketplace

Migrate an existing Salesloft integration through an evidence-backed endpoint, auth, schema, scope, and behavior diff with shadow validation and rollback.

jeremylongshore/tons-of-skills-marketplace

Design REST/GraphQL APIs with OpenAPI 3.1, error handling, pagination, rate limiting, webhooks, and idempotency.

EliasOulkadi/shokunin

Review REST API designs for quality, consistency, and breaking changes.

borghei/Claude-Skills

[production-grade internal] Designs system architecture when you need to decide tech stack, API contracts, data models, or infrastructure shape.

nagisanzenin/production-grade

Interface and abstract contract design patterns for Solidity protocols.

ccashwell/evm-cortex

REST API tasarım kalıpları; kaynak isimlendirme, durum kodları, sayfalama, filtreleme, hata yanıtları, versiyonlama ve üretim API'leri için hız sınırlama içerir.

majiayu000/claude-skill-registry

REST and GraphQL API design best practices including OpenAPI specs.

travisjneuman/.claude