opal

Guides use of the debug_state tool and runtime introspection to diagnose agent issues between turns. Load this skill when something goes wrong during a session and you need to inspect agent state, token usage, event history, or tool availability.

Enforces conventional commit messages and good git hygiene. Use this skill automatically whenever creating commits, preparing PRs, or performing any git operations in this repository.

Detects and removes cyclic compile-time dependencies in Elixir codebases using mix xref, with minimal code changes. Use when the user explicitly asks to check for cycles, remove cyclic dependencies, or fix xref cycle failures. Requires Elixir 1.19 or higher for accurate results.

Automatically adds user-provided links and citations to docs/research/references.md. Use this skill whenever the user shares a URL, paper, blog post, or external reference that should be recorded.

Runs the full CI check suite locally before pushing. Use this skill before pushing a branch or when the user asks to verify everything passes, to catch issues before they hit CI.

Verifies TypeScript codegen is in sync with Elixir protocol definitions. Use this skill after modifying Elixir structs, protocol messages, or RPC types in lib/opal/ to regenerate and verify the TypeScript client SDK types.

Maintains evergreen documentation in docs/. Use this skill when a major feature is added, changed, or removed to keep the corresponding explainer up to date. Also use when the user asks to document something or references this skill.

Runs linting and formatting checks before committing. Use this skill after writing or modifying code to ensure it passes all linters and formatters before creating a commit.

Writes live integration tests that hit the real Copilot API and record responses as replayable fixtures. Use this skill when adding new agent behaviors, provider integrations, or tool interactions that need real-world API coverage.