Show HN: Rudder – Own Your Agent's Code Again with Test-Driven Development

Uh oh! There was an error while loading. Please reload this page. Notifications You must be signed in to change notification settings Fork 0 Star 2 BranchesTags Open more actions menu Folders and files NameName Last commit message Last commit date Latest commit History 129 Commits 129 Commits .agents .agents .claude-plugin .claude-plugin .claude .claude .codex-plugin .codex-plugin .codex .codex .github/workflows .github/workflows almanac almanac assets assets bin bin docs docs drizzle drizzle hooks hooks scripts scripts skills/rudder skills/rudder src src test test ui ui .claude-mcp.json .claude-mcp.json .gitignore .gitignore .mcp.json .mcp.json .rumdl.toml .rumdl.toml AGENTS.md AGENTS.md CLAUDE.md CLAUDE.md CODE_OF_CONDUCT.md CODE_OF_CONDUCT.md CONTRIBUTING.md CONTRIBUTING.md LICENSE LICENSE README.md README.md dangerfile.ts dangerfile.ts drizzle.config.ts drizzle.config.ts package-lock.json package-lock.json package.json package.json tsconfig.json tsconfig.json Repository files navigation Rudder 🫧 Measure your own input on AI generated code. Rudder is a local plugin for Claude Code and Codex that generates tests directly from your prompts. Rudder forces your agent to write tests solely from your session history, turning test coverage into a proxy for how much of your generated code resulted from your own decision making. Why use it: Coding agents are now generating mass amounts of code, but with very little oversight into whether that code actually reflects the intent of the developer. Rudder solves this by using the age-old method of checking if code does what its supposed to do--unit testing. How it works: Rudder installs hooks in your coding agents to record the repository and branch that your agents are working in. When invoked at the end of a session, Rudder instructs your agent to rewrite unit tests with the requirement that each test is tied directly to a prompt recorded for your working branch. Rudder uses the repository's own test and coverage tools, and test generation stays with the coding agent and model you already use. Quick start Requirements Node.js 24 or newer npm and Git on PATH A current Claude Code or Codex installation with plugin support Claude Code Add the Rudder marketplace: /plugin marketplace add RudderCode/Rudder Install the plugin: /plugin install rudder@rudder Restart the session before running Rudder. Codex Add the Rudder marketplace: codex plugin marketplace add RudderCode/Rudder Install the plugin: codex plugin add rudder@rudder Start a new Codex session and review the bundled prompt hook when Codex asks you to trust it. Run Rudder Build your feature in a Git branch as usual, then ask your agent: Run Rudder You can also provide it an explicit coverage target: Use $rudder to verify this branch at 90% coverage. Rudder inspects the branch and session before proposing a test reset. Review the exact paths if tests have already changed. Approve the backup and reset only when those paths are correct. Features Bring your own agent (BYOA): Rudder is a plugin for your existing coding agent, and runs directly in your agent's coding session. Multi-agent support: Install hooks into each of your coding agents to aggregate sessions across multiple providers. Local storage: Your prompt data used by Rudder is stored in a local SQLite DB and never leaves your device. Easy setup: Plugin installation is the only requirement to get started using Rudder. Local data and privacy The prompt hook links submitted prompts to the active repository and branch. Records are stored in a local SQLite database: ~/.rudder/rudder.db Set RUDDER_HOME to use a different state directory. The current plugin does not transmit captured prompts to RudderCode. Your coding agent may process that context when you invoke Rudder. Its provider terms and configuration still apply. You can also ask the installed skill to: show the local storage path, capture status, and prompt count; or delete all stored prompt records after explicit confirmation. See the privacy notice for the complete data-handling description. Development Clone the repository, install dependencies, and run the validation suite: npm ci npm run format:markdown:check npm run typecheck npm test npm run build npm test uses Node's built-in test runner and rebuilds the bundled prompt hook before running the suite. To load the repository directly in Claude Code during development: claude --plugin-dir . See the installation guide for local Codex setup and the published-package workflow. Contributing We welcome contributions! Please read our Contributing Guide and Code of Conduct before getting started. Documentation Installation Privacy Support Terms of use License Rudder is licensed under the Apache License 2.0. Topics Resources Readme Apache-2.0 license Code of conduct Code of conduct Contributing Contributing Activity Custom properties Stars 2 stars Watchers 1 watching Forks 0 forks Report repository