# Quantu Agent Registry (/reference/quantu-agent-registry)



`In progress`

TrustGate emits feedback through Quantu `agent-registry-8004::give_feedback`, while PolicyVault reads Quantu AtomStats for counterparty policy checks.

| Surface          | Source                                                                                                                                                               |
| ---------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| feedback CPI     | [`programs/trustgate/src/ext/agent_registry.rs`](https://github.com/agenttrust-labs/agenttrust/blob/main/programs/trustgate/src/ext/agent_registry.rs)               |
| AtomStats parser | [`programs/policy-vault/src/ext/atom_engine.rs`](https://github.com/agenttrust-labs/agenttrust/blob/main/programs/policy-vault/src/ext/atom_engine.rs)               |
| research notes   | [`docs/plan/research/02-quantu-erc8004-archaeology.md`](https://github.com/agenttrust-labs/agenttrust/blob/main/docs/plan/research/02-quantu-erc8004-archaeology.md) |