Start free. Pay when it's working for you.

Every plan gets the same calculation engine, sources on every result, and all endpoints. Plans renew monthly and you can cancel any time.

AI agents

Agents can pay per call in USDC over x402, with no account: $0.01 per take-home calculation and $0.03 per comparison. Call any paid endpoint without a key to get the payment terms.

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Already on a paid plan? Change or cancel it from the billing link in your Stripe receipt email, rather than buying a second plan here. Your key moves to the new limit automatically.