GBP/JPY historical forex data via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides historical forex data for the GBP/JPY currency pair, accessible through the x402 payment protocol. It is hosted on lowpaymentfee.com, a platform offering a variety of pay-per-request APIs spanning data analytics, AI/ML, finance, crypto, and utility services. All endpoints on the platform follow a uniform $0.02-per-request pricing model settled in USDC on the Base network.
The specific endpoint at `/api/v1/forex/GBPJPY/history` accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers include an `X-PAYMENT` header with a signed payment of up to 20,000 base units of USDC (i.e., $0.02, since USDC uses 6 decimals). No API keys, accounts, or rate limits are advertised — access is gated purely by micropayment.
Documentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the history endpoint accepts or returns. The endpoint is confirmed live (returns a valid 402 challenge), but the lack of documentation means callers must experiment or rely on conventions to determine the expected POST body and response format.
Capabilities
Use cases
- —Retrieving historical GBP/JPY exchange rate data for backtesting trading strategies
- —Feeding forex history into financial models or dashboards
- —Programmatic access to pound-yen price history without API key registration
- —Agent-driven forex data acquisition with micropayment settlement
Fit
Best for
- —Developers needing quick, keyless access to GBP/JPY historical forex data
- —AI agents that can settle x402 micropayments on Base
- —Projects requiring pay-as-you-go forex data without subscription commitments
Not for
- —Users needing comprehensive multi-pair forex data in a single call
- —Anyone requiring detailed API documentation or guaranteed SLAs before integration
- —High-frequency trading systems that need sub-millisecond latency
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/GBPJPY/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment>" \
-d '{}'Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages returned only a wallet-connect prompt. The actual request body format and response structure are completely unknown, making this effectively a stub listing.
Warnings
- —No API documentation available — docs, API, pricing, and README pages all return only a 'Connect wallet' prompt with no content.
- —No OpenAPI or JSON schema describing request parameters or response format.
- —Request body and response structure must be guessed or discovered experimentally.
- —The endpoint path suggests forex history but no details on supported date ranges, granularity, or fields are provided.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/forex/GBPJPY/history
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/forex/GBPJPY/history