USD/TRY forex rate via x402 micropayment on Base for $0.02 per request
What it does
This endpoint provides the USD/TRY (US Dollar to Turkish Lira) foreign exchange rate, accessible through the x402 payment protocol. It is part of a broader suite of APIs hosted at lowpaymentfee.com that span data analytics, AI/ML inference, finance, crypto, and utility services. Each request costs $0.02, paid in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a timeout of 300 seconds.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no example request/response payloads, and no description of the response format beyond the MIME type application/json. The endpoint likely returns a JSON object containing the current USD/TRY exchange rate, but the exact schema is unknown.
Capabilities
Use cases
- —Fetching the current USD/TRY exchange rate for financial applications
- —Integrating real-time forex data into trading bots or dashboards
- —Programmatic currency conversion lookups without API key management
- —Agent-driven forex queries settled via on-chain micropayments
Fit
Best for
- —Developers needing pay-per-call forex data without subscriptions
- —AI agents that can settle x402 payments on Base
- —Low-volume or sporadic USD/TRY rate lookups
Not for
- —High-frequency trading requiring sub-millisecond latency (on-chain payment adds overhead)
- —Users who need historical forex time-series data (only current rate is indicated)
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/USDTRY \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The x402 challenge is live and confirms pricing and payment details, but there is no documentation, no OpenAPI schema, no example requests or responses, and no description of the response payload. The listing is essentially a stub with only the payment challenge to go on.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or schema describing request parameters or response format
- —Response payload structure is entirely unknown; application/json MIME type is the only hint
- —The broader lowpaymentfee.com platform lists many endpoints but provides no technical docs for any of them
Citations
- —Endpoint returns HTTP 402 with x402 challenge confirming it is livehttps://lowpaymentfee.com/api/v1/forex/USDTRY
- —Price is $0.02 per request (maxAmountRequired 20000 base units, USDC 6 decimals)https://lowpaymentfee.com
- —Payment settled in USDC on Base network to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3https://lowpaymentfee.com/api/v1/forex/USDTRY
- —No API keys, no rate limits, instant access advertisedhttps://lowpaymentfee.com
- —Docs, API, pricing, and README pages render only 'Connect wallet'https://lowpaymentfee.com/docs