Best API testing skills for Claude Code, Codex and other agents.

A skill your agent uses when the user mentions Yaak, a Yaak workspace, or the yaak command, or asks to call, hit, or smoke test HTTP/REST endpoints, save or organize API requests for reuse or manual…

mountain-loop/yaak

Guides end-to-end testing of the Qwen Code CLI in headless mode with real model calls, MCP test servers and inspection of raw API traffic.

QwenLM/qwen-code

Guides writing and reviewing pREST Docker-based integration tests so every HTTP request is explained by step comments or table-driven descriptions.

prest/prest

Enable, operate, and extend CAO's MCP Apps surface — the host-rendered fleet dashboard visible inside MCP App hosts (Claude Desktop, ChatGPT, VS Code Copilot, Goose, Postman).

awslabs/cli-agent-orchestrator

Checks that ReasoningConfig fields are serialized into the right provider-specific JSON for OpenRouter, Anthropic, GitHub Copilot and Codex requests.

tailcallhq/forgecode

Runs Neovate Code's NodeBridge message handlers from the command line with bun scripts/test-nodebridge.ts, listing handlers and passing parameters.

neovateai/neovate-code

A skill your agent uses when adding or refactoring EasyPostman modules, shared code, plugin contracts, UI utilities, i18n, settings, theme/font handling, or deciding where a class belongs.

lakernote/easy-postman

A skill your agent uses when modifying EasyPostman Swing dialogs, popups, wizards, or modal flows to better match IntelliJ IDEA or FlatLaf settings-style visual hierarchy, especially when read-only…

lakernote/easy-postman

Test REST and GraphQL endpoint contracts using Playwright request fixture (TypeScript) or REST Assured (Java).

fugazi/test-automation-skills-agents

Run the gated test classes that plain pytest skips (slow Docker/sandbox tests, live model-provider API tests, flaky tests, trio variants).

UKGovernmentBEIS/inspect_ai

Review a coop pull request or local diff with independent, self-validated correctness, design, convention, security, API, test, documentation, and comment lenses.

trailofbits/coop

Reads your git diff, decides whether the change needs browser QA, API checks or repo tests, runs that validation and reports pass or fail with evidence.

Skyvern-AI/skyvern

Start a local Django development server and make HTTP requests against it for interactive endpoint testing

mathiasertl/django-ca

Copy-paste AI prompt templates for common Playwright scaffold development tasks — adding page objects, functional/E2E/API tests, Zod schemas, factories, fixtures, and components.

idavidov13/agentic-playwright

A skill your agent uses when modifying EasyPostman Swing UI fonts, especially when dialogs, labels, tables, tabs, or renderers look too large or too small, or when a change needs to stay consistent…

lakernote/easy-postman

Generates and runs end-to-end tests for BiSheng, pairing pytest API tests with a manual checklist for UI behavior, from a feature spec or a free description.

dataelement/bisheng

Test data strategy for the Playwright scaffold — Faker + Zod factories for dynamic happy-path data, static TS files (.ts with as const exports — never .json) for domain-specific curated invalid…

idavidov13/agentic-playwright

A skill your agent uses when modifying EasyPostman Swing forms, tool-window panels, localized English/Chinese text layouts, or FlatLaf/MigLayout layouts, especially when refactors introduce clipped…

lakernote/easy-postman

SE Ranking API integration architect. An agent skill from seranking/seo-skills.

seranking/seo-skills

A skill your agent uses when styling UI for postman.com — references the extracted design system tokens instead of inventing colors, spacing, or typography.

Manavarya09/design-extract

Implement or review an end-to-end gocron HTTP API change. An agent skill from gocronx-team/gocron.

gocronx-team/gocron

Writes tests for Telegram Bot API actions. An agent skill from vendelieu/telegram-bot.

vendelieu/telegram-bot

Runs the official OpenResponses compliance test suite against a local or remote Response API endpoint and helps diagnose schema and authentication failures.

lobehub/lobehub

A skill your agent uses when adding, changing, testing, or debugging Rust HTTP APIs and services, especially when Codex needs black-box integration tests, random-port app startup, real database test…

hashgraph-online/awesome-codex-plugins

A skill your agent uses when adding or updating EasyPostman Swing/TestNG UI tests that may run in headless CI or no-display Linux environments.

lakernote/easy-postman

Regression testing strategies for AI-assisted development. An agent skill from affaan-m/ECC.

affaan-m/ECC

Tests a site or service for bugs, fixes what it finds with one atomic commit per fix, and reports fix evidence and a ship-readiness summary at one of three depths.

garrytan/gstack

Checks a Suede AI MCP server release against a live process: the full JSON-RPC lifecycle, schemas, annotations, malformed input, catalog agreement and install docs.

JasonColapietro/suede-creator-skills

Test REST and GraphQL APIs with Playwright APIRequestContext, Supertest, or standalone HTTP clients.

petrkindlmann/qa-skills

Create backend tests for Rundeck (unit, API, functional). An agent skill from rundeck/rundeck.

rundeck/rundeck

Tests a browser app, API, CLI, job, worker or webhook and writes a structured bug report with repro steps, without changing any code.

garrytan/gstack

Writes and reviews API automation tests with Playwright Test, covering setup/teardown, assertions, data management, and hybrid API+UI flows.

jaktestowac/awesome-copilot-for-testers

A skill your agent uses when you need to parse multi-format API definitions and generate Bruno collections for executable regression; triggers include Bruno collections and Bruno API testing.

naodeng/awesome-qa-skills

长尾产品集合技能，覆盖低频钉钉产品：OA审批查询与处理/法务智能合同/考勤/直播/DING紧急消息/开放平台应用与MCP开发/Agoal目标管理/日志日报周报/电子表格/开放平台文档搜索与OpenAPI逃生舱/独立及文档内嵌白板/钉钉招聘/DWS技能市场安装/组织大脑Hrbrain/原生Markdown/原生HTML/PAT行为授权/多组织profile。Use when…

DingTalk-Real-AI/dingtalk-workspace-cli

Guides creation and modification of ASP.NET Core Web API endpoints with correct HTTP semantics, OpenAPI metadata, and error handling.

dotnet/skills

A skill your agent uses when you need to parse multi-format API definitions and generate Pytest API automation; triggers include Pytest API tests and API automation with Pytest.

naodeng/awesome-qa-skills

Creates .NET projects from templates with validated parameters, smart defaults, Central Package Management adaptation, and latest NuGet version resolution.

dotnet/skills

Author and maintain versioned Playwright (@playwright/test) TypeScript UI specs for browser user flows.

fugazi/test-automation-skills-agents

API testing expert for curl, REST, GraphQL, authentication, and debugging

RightNow-AI/openfang

Spec file conventions for the Playwright scaffold — imports from test-options.ts, test file structure (describe / beforeEach / test / test.step), single-tag rule, functional vs E2E vs API vs setup…

idavidov13/agentic-playwright

A skill your agent uses when you need to parse multi-format API definitions and generate Rest Assured Java test classes; triggers include Rest Assured, RestAssured, and Java API automation.

naodeng/awesome-qa-skills

Laravel testing strategies with PHPUnit, Pest, model factories, HTTP tests, Sanctum authentication testing, mocking, and coverage.

affaan-m/ECC

TypeScript type safety conventions for the Playwright scaffold — the "no any" rule, Zod 4 schema patterns (z.strictObject, top-level validators like z.uuid / z.email / z.url / z.int / z.enum)…

idavidov13/agentic-playwright

A skill your agent uses when you need to parse multi-format API definitions and generate executable Supertest scripts; triggers include Supertest, Node.js API testing, and Supertest automation.

naodeng/awesome-qa-skills

Test-driven development for Quarkus 3.x LTS using JUnit 5, Mockito, REST Assured, Camel testing, and JaCoCo.

affaan-m/ECC

A skill your agent uses when you need to design API test plans or cases for REST, GraphQL, or gRPC interfaces; triggers include API testing and API test cases.

naodeng/awesome-qa-skills

Comprehensive RESTful API testing patterns covering HTTP methods, status codes, request/response validation, authentication, error handling, and contract testing.

PramodDutta/qaskills

A skill your agent uses when the user asks to generate API tests, create integration test suites, test REST endpoints, or build contract tests.

alirezarezvani/claude-skills