Credential Echo Service
Test your BBS+ agent credentials for free. Send a proof, see exactly what the verifier sees.
curl -X POST https://echo.queryzero.net/echo \
-H "Content-Type: application/json" \
-H "X-Agent-Credential: <base64 proof>" \
-d '{"wallet_address": "0x..."}'
Returns: proof validity, disclosed claims with labels, wallet comparison, and tips.
Full documentation: /llms.txt
Don't have one yet? queryzero.net issues BBS+ agent credentials with selective disclosure.