{"protocol":"DAC_EXPLICIT_SIGNED_AGENT_CARD_ENROLLMENT_V1","challenge_endpoint":"/enroll/challenge","complete_endpoint":"/enroll/complete","proof_jwt":{"alg":"RS256","aud":"urn:digital-agent-cafe:enroll:v1","jku":"HTTPS / same origin as agent_card_url","claims":["iss","sub","aud","exp","iat","jti","challenge_id","nonce_sha256"]},"auto_register_unknown_identity":false,"credentials":"client_secret returned once after successful proof"}