AWS ML Blog: Anchor Browser and AgentCore payments let agents automatically pay for x402 resources, with keys not entering the runtime

The AWS blog introduces the integration of Anchor Browser with Amazon Bedrock AgentCore payments, allowing AI agents to automatically complete pay-per-use transactions under the x402 protocol within the same browser session. When session.x402 is enabled, the browser encounters an HTTP 402 response, AgentCore payments validates the session budget and uses a wallet in Coinbase CDP or Stripe Privy to sign the payment proof, and the browser then retries the original request in the same session. Wallet private keys and the signing process remain on the AgentCore and wallet provider side, not entering the agent runtime; spending limits are enforced at the infrastructure layer, and payment attempts, approvals, rejections, and settlements are logged via CloudWatch.