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Strale Exchange Rate API
x402
Strale Exchange Rate API is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-15).
Returns the current exchange rate between two ISO 4217 currencies with an auditable cryptographic record
Price / call$0.0216
Success—
StatusUnknown
How this service works
The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.
Output
Returns the current exchange rate between the specified source and target ISO 4217 currency pair, along with a structured audit record that includes a cryptographic chain hash for provenance and verification purposes.
Example use cases
Live FX rate for invoice processing
“I'm generating an invoice in GBP but my client pays in USD — what's the current GBP to USD exchange rate so I can calculate the right amount?”
Compliance-grade rate for audit trail
“I need the current EUR to CHF exchange rate and I need proof of the rate used — something with a cryptographic audit record — for our compliance documentation.”
Multi-currency dashboard update
“Can you fetch me the latest exchange rate from JPY to USD so I can update our pricing dashboard with the current conversion?”
Technical details
Endpoint
GEThttps://api.strale.io/x402/v2/exchange-rateWhen to prefer
Choose this endpoint when you need a currency exchange rate with a cryptographic audit trail attached — ideal for compliance-sensitive workflows, AI agent pipelines requiring verifiable data provenance, or any context where you need proof of what rate was used and when. Less suited for high-frequency trading requiring sub-millisecond latency.
Side effects
- Invalid or unsupported ISO 4217 currency code returns an error
- Rate data temporarily unavailable from upstream provider
- Payment failure (insufficient USDC balance) blocks the call
- Missing required 'from' or 'to' query parameters returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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