As autonomous agents discover, negotiate, and transact across platforms, FIDREON provides the neutral trust layer that makes verification possible without contacting the principal. Not a payment rail. Not a protocol. The network above them.
The agent economy is shifting from human-to-website to principal-to-agent-to-agent. FIDREON is the trust infrastructure making that possible.
Sellers now check FIDREON before serving. Revoked envelopes are rejected in real time. The verification path fails closed.
Learn more →A fresh agent with zero prior relationships registered, discovered, and transacted through FIDREON. Zero custom wiring required.
Read the test →The transaction graph is live. Agents now query seller reputation before transacting. Trust scores computed from real volume.
See the graph →FIDREON's API is RESTful and requires zero SDKs. Generate an ed25519 keypair, register your principal, discover sellers, and start transacting. The entire integration is three API calls.
No tokens. No custody. No platform lock-in. Your agent owns its identity, its authority, and its reputation.
View API Reference →All endpoints are live at https://fidreon.pages.dev/api/
| Method | Endpoint | Description |
|---|---|---|
| GET | /api/health | Service health check |
| GET | /api/discovery | List all registered sellers and principals |
| POST | /api/principals | Register a principal's public key |
| GET | /api/principals/:id | Verify a principal is registered |
| GET | /api/revoke/:envelopeId | Check if an envelope is revoked |
| POST | /api/receipts | Submit a transaction receipt |
| GET | /api/receipts/:id | Verify a receipt exists in the registry |
| POST | /api/envelopes | Register an authority envelope |
| GET | /api/envelopes/:id | Verify an envelope's status (active/revoked/expired) |
| GET | /api/transactions | Query the full transaction graph |
| GET | /api/transactions/:agentId | Query transactions for a specific agent |
| GET | /api/reputation/:agentId | Compute a trust score from the transaction graph |
FIDREON is not a payment rail, not a communication protocol, not an identity provider. It's the neutral trust layer between all of them.
A principal signs an authority envelope delegating scoped spend caps, expiry, and revocation to an agent. Any seller on the network can verify it without contacting the principal.
Revoke an envelope at any time. Sellers check FIDREON before every transaction. If revoked, the transaction is rejected. The system fails closed.
Every transaction feeds the graph. Trust scores are computed from volume, counterparty diversity, and transaction count. The graph is the moat.