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Authentication

AgentBureau does not use traditional API keys, Bearer tokens, or user accounts.

In the AgentBureau ecosystem, payment is authentication. We implement the x402 protocol, which means every priced request must be accompanied by proof of payment on the blockchain.

  1. You call an endpoint.
  2. The server responds with 402 Payment Required.
  3. You send USDC on the Base network to the specified wallet.
  4. You retry the request with the transaction hash in the PAYMENT-SIGNATURE header.

The transaction hash serves as your unique, single-use “access token” for that specific operation.

  • Zero Friction: No sign-up forms, no email verification, no credit cards.
  • Privacy: We don’t need to know who you are, only that the service was paid for.
  • Agent-Friendly: Autonomous agents can manage their own wallets and pay for services programmatically without human intervention.