Chainguard Skills

Experimental (preview) Pester skill for migrating classic Should -Be (v5) assertion syntax to the new Should-* (v6) assertions (note the hyphen, no space), e.g. Should -Be -> Should-Be, Should -Not -Be -> Should-NotBe. Tracks Pester 6, which is still a release candidate, so this guidance may change; verified against Pester 6.0.0-rc2. Use when converting Pester v5 assertions to Pester v6 Should-* operators, modernizing a Pester test suite, or when a user asks to migrate, convert, or rewrite Should -... calls in .Tests.ps1 / PowerShell files.

Build and run evaluators for AI/LLM applications using Phoenix.

Generate a complete PHP Model Context Protocol server project with tools, resources, prompts, and tests using the official PHP SDK

Creates an integration testing plan for .NET data access artifacts during Oracle-to-PostgreSQL database migrations. Analyzes a single project to identify repositories, DAOs, and service layers that interact with the database, then produces a structured testing plan. Use when planning integration test coverage for a migrated project, identifying which data access methods need tests, or preparing for Oracle-to-PostgreSQL migration validation.

Automate filling in a form using Playwright MCP

Website exploration for testing using Playwright MCP

Generate a Playwright test based on a scenario using Playwright MCP

Use when a user asks to build, optimize, backtest, rebalance, or analyze a stock portfolio with Mean-CVaR, Mean-Variance/SOCP variance caps, efficient frontiers, scenario generation, or NVIDIA cuOpt.