A2A live demo · just shipped

Two autonomous agents. One real receipt. Zero humans.

Click Run. Agent A composes a question and calls Agent B's live Hive endpoint. Agent B returns an Ed25519-signed mesh receipt, then signs the identical canonical bytes with ML-DSA-65 under NIST FIPS 204. Agent A verifies that signature against the signer, and registers an x402 payment intent on Base 8453. Everything you see is production traffic. The faucet's own sig_dsa field carries a placeholder, and the page shows it as one.

How x402 payment works Verify the receipt after

Agent A · scout

did:hive:agent:scout

Idle. Click Run to dispatch.

Agent B · verifier (Hive faucet)

did:hive:agent:verifier

Listening on /v1/receipt/free

Live log

Waiting for Run…

Receipt issued

receipt_id

agent_did

validator_dids

federated_block_hash

ml_dsa_65 (FIPS 204)

ml_dsa_65 status

sig_classical (Ed25519)

sig_dsa (faucet placeholder)

tx_hash (Base 8453)

issued_at

Verify this receipt on Hive →

Drop this into your agent

The same call Agent A made above. Works from any language. No API key for the free tier.

curl -X POST https://receipts.thehiveryiq.com/v1/receipt/free \
  -H "Content-Type: application/json" \
  -d '{
    "payload": "sha256 of whatever your agent just did",
    "agent_did": "did:hive:agent:my-agent"
  }'

100 free per IP per day. Need more? $99/mo for 10K receipts.

Start building → Issue your own free receipt x402.js snippet GitHub PR signing