Tamper-proof witnessed AI agent work. Stones stacked to mark "I was here."
- What Cairn Is -- the concept, the two modes, the session lifecycle.
- Witnessed -- trust model, key derivation, tamper detection, consent tracking.
- Modules -- how the pieces compose.
- Agent Guide -- what agents need to know.
Start with what cairn does and why. Then understand how trust works -- key derivation, verification, the violation record. Then learn the module boundaries. Then read the agent guide, because until you know what the system is, the guide has nothing to stand on.
The library is nine modules. The concept is one sentence: witness agent work, make it tamper-proof, store it in git. Everything else is consequences.