I Built a Claude Code Plugin That Stops It from Shipping Broken Code

dev-process-toolkit is a Claude Code plugin that forces a repeatable workflow on your AI coding agent: specs as source of truth → TDD → deterministic gate checks → bounded self-review → human approval. Instead of the agent deciding whether its code is correct, the compiler decides. /plugin marketplace add nesquikm/dev-process-toolkit /plugin install dev-process-toolkit@nesquikm-dev-process-toolkit Then run /dev-process-toolkit:setup. It reads your package.json, pubspec.yaml, pyproject.toml (or whatever you have), generates a CLAUDE.md with your actual gate commands, configures tool permissions, and optionally scaffolds spec files. Works with any stack that has typecheck/lint/test commands: TypeScript, Flutter/Dart, Python, Rust, Go, Java — same methodology, different compilers. Battle-tested on three production projects: a TypeScript/React web dashboard, a Node/MCP server, and a Flutter retail app. Why I Built This AI coding agents are probabilistic systems making deterministic claims.