Snitch: Local Verification of Coding Agent Narratives
Mrsomud007 · reddit · 2026-07-11
Snitch is a deterministic prose claim verifier that runs locally on macOS, used to check whether a coding agent's "claims" are consistent with actual execution results.
It reads transcripts from agents like Cursor, Claude Code, Codex, Pi, and OpenCode, uses deterministic regexes to extract claims from narratives, and cross-references them against tool calls, shell output, file system, git, and the last 3 rounds of conversation history. Once an inconsistency is found, it highlights it directly with evidence. The author emphasizes that it runs fully locally, no LLM, no API calls, and supports unified tool name mapping across different agents. Currently v0.4.2, 10k lines of Go, Apache 2.0, in alpha stage. Future plans include community annotations and a team dashboard.
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