Show HN: Quibbler – A critic for your coding agent that learns what you want
5 months ago
- #code-review
- #automation
- #coding-agent
- Quibbler is a background critic for coding agents, automatically correcting failures and enforcing learned rules.
- Prevents common issues like fabricating results, skipping tests, not following coding styles, and hallucinating functionality.
- Supports two integration modes: event-driven monitoring via Claude Code's hook system and universal Model Context Protocol (MCP).
- Setup involves configuring MCP servers or running a hook server, with project-specific instructions in AGENTS.md.
- Quibbler reviews code changes against user intent, validates claims, checks for hallucinations, and ensures testing steps.
- Maintains context and learns project patterns over time, saving rules to .quibbler/rules.md.
- Customizable system prompt and supports different Claude models like Haiku and Sonnet.
- Community support available via Discord and contributions welcome through GitHub issues and PRs.