Tool detail

x402stock

Returns official US Treasury quarterly FX reference rates (foreign currency per 1 USD) for about 170 currencies, optionally filtered by currency.

Categories: Currency exchange, Market prices

Use when

get the official US Treasury exchange rate for a currency
convert an exotic currency using government reference rates
get accounting-grade FX rates for financial reporting

Not for

not real-time market FX rates (see the forex endpoint)
not daily updates — quarterly reporting rates only

Inputs

GET query param: currency (string, optional, e.g. Euro - omit for all ~170 currencies).

Admitted input schema

{
  "type": "object",
  "properties": {
    "currency": {
      "type": "string",
      "minLength": 1,
      "maxLength": 64
    }
  },
  "required": [],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://agents.x402stock.xyz/api/v1/exchange-rates

Payment

Protocol: x402
Listed price: 0.02 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://agents.x402stock.xyz/api/v1/exchange-rates
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z