AI Agent Skills

Guidelines for writing robust, modern Java tests using JUnit 5, Mockito, and Testcontainers.

Write the current session's in-flight work state to a human-readable handoff doc on disk (docs/context/CONTEXT-{topic}.md) so a future chat session — or another person —…

Turn a hard-won, multi-step procedure from the current session into its own small skill at ~/.claude/skills/learned-<slug>/SKILL.md, so future sessions load it when the…

Comprehensive E2E testing skill using Playwright MCP for systematic web application testing. This skill should be used when users need to test web-based systems end-to-e…

Detect and prevent overfitting to historical data via multiple testing corrections and pre-registration. Use when evaluating strategy variants to ensure performance is n…

Prevent train-test contamination, target leakage, and temporal leakage. Use when splitting data, fitting preprocessors, or engineering features for time-series ML.

Test strategy robustness to parameter variation and detect overfitting cliffs. Use when validating that performance is stable across parameter perturbations.

CLI guidelines. Use whenever using the Bash tool, which is almost always. Also use when you see "command not found: __zoxide_z" errors.

Formatting rules for Java code generators that build source code via string concatenation. Use when the user asks to "fix formatter-off", "fix code generation formatting…

Code quality guidelines. ALWAYS use skill for ANY code changes.

Create and maintain an HTML codebase walkthrough with ordered explanations, scroll-linked source highlights, and an iterative learning and review workflow. Use for guide…

Run git-test precommit checks and fix failures without committing, or fix the errors described in a provided build log. Use when asked to fix build, test, lint, typechec…

Rebase local commits on the configured upstream using the plugin rebase script.

Write merge-friendly Markdown. Use when writing or editing Markdown files.

Running precommit checks and build validation. ALWAYS use after ANY code changes.

Run git-test on every local branch that contains upstream, fix failures in a subagent that folds each fix into the breaking commit, and loop until all commits pass. Use…