EUR/GBP forex rate via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides EUR/GBP foreign exchange rate data, accessible via the x402 payment protocol on the Base network. It is part of a broader suite of APIs offered by lowpaymentfee.com spanning finance, analytics, AI/ML, crypto, and utility services, all priced at $0.02 per request paid in USDC.
The endpoint accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment on Base (contract 0x8335…2913). The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys, rate limits, or upfront commitments are needed — each request is independently settled on-chain.
Documentation beyond the landing page is sparse. The /docs, /pricing, /api, and /README pages all resolve to a minimal "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema for the forex endpoint. The endpoint is confirmed live (returns a proper 402 challenge), but the exact fields returned in a successful response are unknown.
Capabilities
Use cases
- —Fetching the current EUR/GBP exchange rate for trading or analytics applications
- —Programmatic currency conversion in financial dashboards
- —Agent-driven forex data retrieval with per-call micropayments
- —Embedding live FX rates into smart contract or DeFi workflows
Fit
Best for
- —Developers needing on-demand EUR/GBP rates without API key management
- —AI agents that can settle x402 micropayments autonomously
- —Low-volume or bursty forex data consumers who prefer pay-per-call pricing
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk rate plans
- —Users who need historical forex time-series data (no evidence this is supported)
- —Consumers without a Base-network USDC wallet or x402-compatible client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/EURGBP \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment-header>"Endpoint
Quality
The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and all documentation pages are empty stubs. The listing is essentially a stub with only the x402 challenge and landing page to work from.
Warnings
- —No OpenAPI or schema documentation available — response format is unknown
- —All doc pages (/docs, /pricing, /api, /README) return only a 'Connect wallet' stub with no content
- —No example request or response payloads could be found
- —The broader lowpaymentfee.com platform lists many diverse endpoints; quality and data sources for each are unverified
Citations
- —Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/forex/EURGBP
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/forex/EURGBP