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Stripe for AI agents.

HTTP 402 Payment Required, settled on Base in USDC. Drop one middleware into your API and start charging agents and machines per request.

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How it works

  1. Your API returns 402 Payment Required with a signed x402 challenge.
  2. The agent sends USDC on Base, includes the payment proof in the retry.
  3. We verify on-chain in 2 blocks, you fulfill the request. No invoices, no chargebacks, no accounts.

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Pricing

Starter

$49/mo
  • 10k paid calls
  • 1 route
  • Email support

Growth

$99/mo
  • 100k paid calls
  • Unlimited routes
  • Priority support

Scale

$299/mo
  • 1M paid calls
  • Usage-based overage
  • SLA + dedicated Slack