“API testing”

Tests APIs for Broken Function Level Authorization (BFLA) vulnerabilities where regular users can invoke administrative functions or access privileged API…

Uses Microsoft RESTler to perform stateful REST API fuzzing by automatically generating and executing test sequences that exercise API endpoints, discover…

Produces mock server definitions, sandbox environment specs, API stub configurations, and fixture data for any API.

Deep OWASP API Security Top 10 testing for REST, GraphQL, gRPC, and WebSocket APIs — BFLA, mass assignment, rate limiting, and unsafe consumption.

Test APIs against OWASP API Security Top 10 including discovery, auth abuse, and protocol-specific checks.

Tests APIs for excessive data exposure where endpoints return more data than the client application needs, relying on the frontend to filter sensitive fields.

Advises on API versioning strategies, designs deprecation flows, generates migration guides, and handles breaking vs non-breaking change classification.

Use when designing, building, or testing REST APIs — endpoint design, authentication, error handling, pagination, versioning, and OpenAPI documentation.

Testing doctrine, pyramid (unit, integration, API, security, smoke), AAA pattern, and coverage enforcement.

Validates whether an API request is correct based on provided inputs (method, URL, headers, body, auth, query params).

API endpoint design and testing for vehicle insurance data platform.

Use this skill when building with Bun runtime — Bun APIs, testing, package management, shell scripting, hot reload, SQLite, file I/O.

Interactively test any ChainGPT API endpoint.

API design, versioning, testing, schema validation, and contract testing patterns for REST and GraphQL APIs.

Scaffold, validate, format, and run YAML.mmt API tests.

Loops MCP by usefulapi

usefulapi.io

Manage Loops contacts, mailing lists, and transactional/event emails.

Turn manual cases into Playwright E2E automation run in a browser: page objects, helpers, bug evidence, reports.

Design and diagnose Endly integration and e2e tests with isolated fixtures, sequence-backed IDs, API and database assertions, and focused reruns.

Backend testing guide — unit, integration, API contract, database, load testing

Comprehensive documentation guide for Golang projects, covering godoc comments, README, CONTRIBUTING, CHANGELOG, Go Playground, Example tests, API docs, and…

When the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program.

Generates client SDK code, API wrapper libraries, request/response models, and language-specific usage patterns for any REST API.

Designs event-driven architectures, webhook systems, API chaining flows, ETL pipelines, and integration patterns between services.

Experiment setup, variant splitting, statistical significance, and feature flag integration.