hba.addrbook.com

The HBA issuer https://hba.addrbook.com/.

This host issues Human-Backed Agent credentials. A person approves, on their phone, what an AI agent may do on their behalf. The agent carries a credential that says so: scoped, short-lived, and revocable by the person. The services the agent talks to check that credential against this host's keys and its public log.

There is nothing to browse. The phone app talks to this host; relying parties read:

1. /.well-known/jwks.jsonThe signing keys: ES256 and ML-DSA-65.
2. /log/keysThe transparency log's origin and public keys.
3. /log/checkpointThe log's latest signed checkpoint; 404 until the log has its first entry.
4. /v1/openapi.jsonThe API, as an OpenAPI document.
5. /readyWhether the service is up.