Show HN: Truth Firewall – Check whether Codex finished a task

Category: devtools

Tags: ai-agents, code-verification, llm-tooling, acceptance-testing, codex

Score: 6.0/10 (Innovation: 6, Technical: 5, Documentation: 8, Utility: 5)

Truth Firewall is a verification layer for AI coding agents like Codex that independently checks acceptance conditions before accepting a 'DONE' claim. It runs deterministic checks (file existence, function signatures, black-box I/O) and can automatically re-prompt the agent on failures, addressing a real gap in agent reliability. The project is currently a Windows-only pilot with limited check types and a small scope.

Target audience: backend devs, AI engineers, devops

Repository: https://github.com/aldi949/truth-firewall · Python · MIT · 4 stars

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