Skills (mattpocock)
An open-source skill collection for Claude Code, Codex and other coding agents, with editable project files and workflows that work with any model.
Skills (mattpocock) is an MIT-licensed collection of engineering workflows for developers using Claude Code, Codex and other AI coding agents. Its small, separate skills work with any model and can be combined or adapted to your project, so you can choose specific practices without adopting an entire development process.
The collection addresses common problems with agent-written software: misunderstood requirements, inconsistent project terminology, weak testing and code that's hard to change. grill-with-docs questions the proposed work and records shared terminology in GLOSSARY.md alongside architecture decision records. to-spec turns an existing discussion into a specification, while to-tickets breaks work into tickets with explicit dependencies.
For implementation, tdd guides development through failing tests, fixes and refactoring. diagnosing-bugs structures investigation around reproducing a failure and testing possible causes. code-review checks both repository standards and agreement with the specification. improve-codebase-architecture produces an HTML report of opportunities to put more behavior behind simpler module interfaces; it identifies candidates for refactoring rather than automatically repairing an old codebase.
The skills live in your coding agent's environment. Claude Code offers a managed plugin with automatic updates; editable skill files are also available for your own repository. implement-spec can coordinate subagents across dependent tickets, and handoff saves conversation context in a document another agent can use to continue the work.
