How much do pay-per-call finance APIs cost?
Hermes Plant's agent-service endpoints cost between $0.02 and $0.30 per call, settled in USDC on Base over x402. There is no subscription, minimum, or monthly fee — an agent pays only for the calls it makes. CashflowLens is $0.20, OptionLens and WaterfallLens are $0.30, and BondLens is $0.25 per call.
How much do pay-per-call finance APIs cost?
Answer
Hermes Plant's agent-service endpoints cost between $0.02 and $0.30 per call, settled in USDC on Base over x402. There is no subscription, minimum, or monthly fee — an agent pays only for the calls it makes. CashflowLens is $0.20, OptionLens and WaterfallLens are $0.30, and BondLens is $0.25 per call.
Why it matters for agents
Finance and quant agents need numbers they can defend. Routing the calculation to a deterministic, x402-metered endpoint gives the agent an audited result and a payment path it can perform autonomously — without API keys, subscriptions, or a data feed to manage.
Where to start
Browse the finance and quant suite on the agent services page, then point your agent's x402 client at an endpoint. The OpenAPI spec lists every endpoint with its inputs, price, and example.
FAQ
How much do pay-per-call finance APIs cost?
Hermes Plant's agent-service endpoints cost between $0.02 and $0.30 per call, settled in USDC on Base over x402. There is no subscription, minimum, or monthly fee — an agent pays only for the calls it makes. CashflowLens is $0.20, OptionLens and WaterfallLens are $0.30, and BondLens is $0.25 per call.