AKF

Trust metadata for AI agents — a stamp costs ~15 tokens, re-verifying costs 15,000. Agents stamp what they verify; the next agent runs 'akf check' and builds on it. pip install akf. Maintained by HMAKT99 on GitHub, where it has earned 13 stars from the community.

It's actively developed around agent, ai, ai-agents, and is a solid reference for anyone building with these tools.