Detects mistake-prone code patterns and designs interfaces that make invalid states unrepresentable.
npx skills add https://github.com/github/awesome-copilot --skill poka-yoke
Please help me install this Agent Skill. Skill: poka-yoke Source: https://github.com/github/awesome-copilot/tree/main/skills/poka-yoke Command: npx skills add https://github.com/github/awesome-copilot --skill poka-yoke
Codebases are full of footguns: swappable same-type parameters, unbounded deletes, swallowed errors, and non-idempotent retries that let ordinary mistakes become production defects. This Skill audits code for these hazards and redesigns interfaces so the mistakes cannot be expressed at all, rather than relying on documentation or reviewer vigilance.
Ask the AI to poka-yoke your current diff or audit a module for footguns, for example: review this pull request for ways callers could misuse it and rank each finding by severity.
High-intent search queries and answers about installing and using this skill.
Replace bags of optional fields with discriminated unions, parse unstructured input into proof-carrying types at the boundary, and give distinct concepts distinct types so swapped arguments fail to compile. The Skill walks through these moves with TypeScript, Python, Go, and Rust examples.
Run scripts/detect_hazards.py with --staged for pre-commit checks, --diff for uncommitted changes, or --paths to scan directories. It supports --json for CI and exits non-zero when a scan covers zero files, so a typo cannot produce a false all-clear.
The scanner covers Python, TypeScript/JavaScript, Go, Rust, and SQL files. Python gets an additional AST-based pass for adjacent same-type parameters, assert-as-validation, and float equality comparisons that regexes cannot detect.
No. The scanner uses only the Python standard library and needs Python 3.9 or later, so it runs in CI pipelines and pre-commit hooks without an install step. Rules already covered by linters like ruff or eslint are off by default.
Use a conventional code reviewer when you need a specific existing bug found, since this method targets the shapes that allow bug classes rather than the defect on the page. Also avoid over-fitting machinery to a one-off incident whose shape is unlikely to recur.
encero-systemsGenerate PR descriptions from repository templates and git diff changes.
jmaglyConfigure pre-commit hooks and CI coverage gates to enforce test-driven development.
joshsymondsAudit test suites and categorize tests as RED, YELLOW, or GREEN.
georgekhananaevEnforce cross-language code quality standards across TypeScript, Python, Go, and Rust.
