Do these finance APIs need a market-data feed or API key?
No. The Hermes Plant finance endpoints are pure calculations over the inputs your agent already has — cashflows, holdings, option parameters, bond terms. There is nothing to license, no rate limits, and no key to provision. An agent pays per call over x402 and receives a deterministic result with evidence-backed findings.
Do these finance APIs need a market-data feed or API key?
Answer
No. The Hermes Plant finance endpoints are pure calculations over the inputs your agent already has — cashflows, holdings, option parameters, bond terms. There is nothing to license, no rate limits, and no key to provision. An agent pays per call over x402 and receives a deterministic result with evidence-backed findings.
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
Do these finance APIs need a market-data feed or API key?
No. The Hermes Plant finance endpoints are pure calculations over the inputs your agent already has — cashflows, holdings, option parameters, bond terms. There is nothing to license, no rate limits, and no key to provision. An agent pays per call over x402 and receives a deterministic result with evidence-backed findings.