AI tools for “testing”

Use when designing, implementing, mocking, testing, monitoring, documenting, or deploying an API. Guides decisions using reusable local API contracts, tests, and mocks, plus organization-wide dependency context, and…

…loading), workspaces, structured output, streaming, testing, and multi-agent patterns. Use when the user mentions Pydantic AI, imports pydantic_ai, or asks to build an AI agent, add tools/capabilities, attach a…

…upgrading model dimensions, switching providers, or A/B testing…

Content experimentation and A/B testing guidance covering experiment design, hypotheses, metrics, sample size, statistical foundations, CMS-managed variants, and common analysis pitfalls. Use this skill when planning…

--- name: test-writer description: Generates comprehensive unit tests for code version: 1.0.0 owner: example task_type: testing ---

…CLI plugin (the copilot/ package) locally for development/testing — no GitHub push or release needed. Use when you want to try or test the Copilot plugin against a real `copilot` session, iterate on it, or tear the…

…Agent Script flow control without persona work, or testing agent…

Use to generate and validate Apex test classes with TestDataFactory patterns, bulk testing (251+ records), mocking, assertions, and disciplined test-fix loops. Use when creating Apex test classes (for triggers,…

Apex test execution, coverage analysis, and test-fix loops with 120-point scoring. Use when the user runs Apex tests, checks code coverage, fixes failing tests, or touches *Test.cls / *_Test.cls files. DO NOT TRIGGER…

…DO NOT TRIGGER for general agent conversation testing, runtime session tracing, or automatic agent…

…for Data Cloud, deploying code extensions, or testing data transformations. Supports init, run, scan, and deploy…

…optionally bundle skills in a plugin, and provide local testing and private GitHub handoff instructions. Plugin packaging supports Claude only; reject requests for Codex, ChatGPT, or other plugin platforms. Use for…

…stores behave at runtime, profiling local Compute apps, or testing WASM binaries locally. Prefer this skill over Viceroy for any non-Rust Compute work — its source code is easier to understand as a Fastly Compute API…

Use when testing VCL against real Fastly edge infrastructure, writing assertion-based Fiddle tests, producing shareable fiddle URLs for bug reproductions, running VCL integration tests in CI, linting VCL remotely via…

…backend overrides and store definitions, running Rust unit tests with cargo-nextest against the Compute runtime, debugging Compute apps locally, adapting core WASM modules to the Component Model, or troubleshooting…

…so this skill is required. Also applies when writing and testing VCL locally (compile with `uvx xvcl`, test with falco), reducing VCL code duplication, splitting large VCL into modular includes, or doing any VCL…

…channels, explaining branches/channels/runtime versions, testing updates, or debugging why an installed build still shows old code. Load for TestFlight, preview, or production updates that do not appear, including…

…via CNAME records), Single Sender Verification for testing, SDK installation, and the relationship between SendGrid and Twilio credentials. Use before any other SendGrid skill. This skill is for SendGrid only —…

…method and implement it correctly. Covers Auth Token (testing only), API Keys (production standard), OAuth2 client_credentials (time-limited bearer tokens), Access Tokens (client-side SDKs), and test credentials.…

…rules (free-form vs template mode), sandbox setup for testing, template approval workflow, production sender requirements, and WhatsApp-specific error handling. For sending WhatsApp messages, use…