x402basequality 0.35

GBP/CHF historical forex data via x402 micropayment on Base, $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/forex/GBPCHF/history

What it does

This endpoint provides historical foreign exchange rate data for the GBP/CHF currency pair. It is part of the lowpaymentfee.com platform, which offers a variety of pay-per-request APIs spanning finance, analytics, AI, and utilities. The endpoint is accessed via HTTP POST and is gated by the x402 payment protocol, meaning each request requires a USDC micropayment on the Base network — no API keys, accounts, or subscriptions needed.

The x402 challenge confirms the endpoint is live and accepts payments of up to 20,000 base units of USDC (0.02 USD) per call, settled to a specified wallet address on Base. The platform advertises uniform $0.02 pricing across all its endpoints with no rate limits and no minimum commitments. However, 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 request/response examples, and no description of what fields the history endpoint accepts or returns. The exact query parameters (date range, granularity, etc.) and response format must be discovered experimentally.

Because of the lack of documentation, integrators should expect to probe the endpoint to determine the accepted POST body structure and the shape of the returned historical data. The endpoint is confirmed live via its 402 challenge, and the platform root page loads successfully.

Capabilities

forex-historygbp-chfx402-paymentusdc-basepay-per-requestmicropaymenthistorical-rates

Use cases

  • —Retrieving historical GBP/CHF exchange rates for backtesting trading strategies
  • —Feeding forex history into financial models or risk calculations
  • —Building dashboards that display GBP/CHF rate trends over time
  • —Automated agents purchasing forex data on-demand without API key management

Fit

Best for

  • —Developers needing quick, keyless access to GBP/CHF historical forex data
  • —AI agents that can settle x402 micropayments on Base
  • —Projects requiring pay-as-you-go forex data without subscriptions

Not for

  • —Users who need comprehensive multi-pair forex data in a single call
  • —Applications requiring detailed API documentation and guaranteed SLAs
  • —High-frequency trading systems that need sub-second latency guarantees

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/forex/GBPCHF/history \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/forex/GBPCHF/history
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is confirmed live via its 402 challenge and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages return only a wallet-connect stub. The request body format and response structure are entirely unknown.

Warnings

  • —No API documentation available — docs, pricing, and README pages all render only 'Connect wallet' with no content
  • —No OpenAPI or schema describing accepted request body fields or response format
  • —Response structure (fields, date formats, granularity options) must be discovered experimentally
  • —The endpoint description is generic ('Premium API Access') and does not describe the forex history functionality

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:51:40Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/9nZ44j
GBP/CHF historical forex data via x402 micropayment on Base, $0.02 per request. — Clawmart · Clawmart