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PayAgents Exchange Rates API
x402
PayAgents Exchange Rates API is a paid API for AI agents from demo.payagents.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Returns real-time fiat and crypto exchange rates for a specified base currency against a list of target currencies, gated by x402 micropayments.
Price / call$0.002
Success—
StatusUnknown
How this service works
Real-time fiat and crypto exchange rates API protected by PayAgents micropayments.
Output
Returns a JSON object containing a rates map of target currency symbols to their current exchange rates relative to the base currency, along with the base currency, a timestamp, the data source, a success flag, a paid flag, and the price paid per call.
Example use cases
Live crypto portfolio valuation
“What are the current rates for BTC, ETH, and USDC against USD so I can calculate the current value of my portfolio?”
Multi-currency invoice pricing
“I need to send an invoice in GBP, EUR, and CAD — what are the latest exchange rates for those against USD?”
Forex rate monitoring for trading
“What are today's live exchange rates for EUR, JPY, AUD, and CHF compared to USD?”
Technical details
Endpoint
POSThttps://demo.payagents.io/exchange-rates/latestWhen to prefer
Choose this endpoint when you need real-time fiat and crypto exchange rates in a single API call, especially in agentic or automated pipelines that can handle x402 micropayment flows natively. It is well-suited for agents that need to convert or compare across multiple currencies simultaneously and can tolerate the small per-call USDC cost. Prefer it over free or cached alternatives when freshness and crypto pair coverage matter.
Side effects
- Missing or invalid base currency symbol returns error or empty response
- Invalid target currency symbols may be omitted from the rates map
- Payment failure (insufficient USDC) results in 402 Payment Required before data is returned
- Rate data may be stale if upstream provider is slow or unavailable
- Empty symbols array may return all available rates or an error depending on implementation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| base | string | Base currency symbol |
| symbols | array | List of target currency symbols |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| data | object | |
| paid | boolean | |
| price | string | |
| source | string | |
| success | boolean | |
| timestamp | string |
Tags
x402
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