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FX Pulse – Stablecoin & Fiat FX Conversion Rate
x402
FX Pulse – Stablecoin & Fiat FX Conversion Rate is a paid API for AI agents from fx-pulse-chi.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-16).
Returns a real-time FX rate and converted amount between any fiat currency (ISO-4217) or major stablecoin (USDC, EURC, USDT) pair, paid per-call in USDC via x402 on Base.
Price / call$0.005
Success—
StatusUnknown
How this service works
Single-pair rate, amount conversion, and batch FX rates for fiat currencies and major stablecoins (USDC, EURC, USDT...). Pay-per-call in USDC via x402 on Base.
Output
A JSON object containing the source currency (from), target currency (to), the exchange rate (rate), the input amount, the converted amount (converted), and the date of the rate used. Example: {from:'USDC', to:'VND', rate:25400, amount:100, converted:2540000, date:'2026-09-19'}.
Example use cases
Stablecoin remittance amount check
“I'm sending 500 USDC to my family in the Philippines — how much Philippine pesos will they receive at today's rate?”
Cross-border invoice pricing
“I need to invoice a client in Japan for work worth 2000 EURC — what's the current EURC to JPY rate and what yen amount should I put on the invoice?”
Stablecoin-to-fiat treasury reporting
“We're reporting our treasury holdings — can you convert our 10000 USDC balance to euros using today's reference rate so I can fill in the EUR value?”
Technical details
Endpoint
GEThttps://fx-pulse-chi.vercel.app/api/convert?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call FX reference rate that supports both fiat ISO-4217 currencies and major stablecoins (USDC, EURC, USDT) in a single API. Ideal for AI agents handling cross-border payment flows, DeFi/stablecoin accounting, remittance calculators, or treasury reporting where stablecoin-to-fiat conversion is needed without a full crypto exchange integration. Preferred over generic FX APIs when stablecoin pairs are required.
Side effects
- Unsupported currency pair returns an error — not all exotic fiat codes or obscure stablecoins may be available
- Missing required 'from' or 'to' parameters cause a 400 bad request
- Payment failure via x402 if wallet balance is insufficient or Base network is congested
- Stale rate if the underlying FX data provider hasn't refreshed recently
- Invalid ticker symbol (e.g. typo in stablecoin name) results in an error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | Target currency (ISO-4217) or stablecoin ticker. |
| from | string | Source currency (ISO-4217) or stablecoin ticker. |
| amount | number | Amount to convert, in 'from' units. |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "VND",
"date": "2026-09-19",
"from": "USDC",
"rate": 25400,
"amount": 100,
"converted": 2540000
}
}Tags
x402
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