{"id":"aceb620a-72c4-4e7e-b40d-ad1a90ad0b17","shortId":"yGKeb3","kind":"x402","title":"GBP/AUD historical forex data via x402 micropayment on Base, $0.02 per request.","tagline":"GBP/AUD historical forex data via x402 micropayment on Base, $0.02 per request.","description":"This endpoint provides historical foreign exchange rate data for the GBP/AUD currency pair. It is part of the lowpaymentfee.com platform, which offers a variety of pay-per-request APIs spanning finance, analytics, AI, and infrastructure — all gated via the x402 payment protocol on the Base network using USDC.\n\nThe endpoint accepts POST requests and returns JSON. Payment is handled inline: callers attach an X-PAYMENT header with a valid x402 payment proof. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. There are no API keys, no rate limits, and no subscription commitments — each request is independently settled on-chain.\n\nThe platform advertises a uniform $0.02/request pricing model across all its endpoints. Documentation beyond the landing page is sparse; the /docs, /pricing, and /README pages all resolve to a minimal \"Connect wallet\" prompt with no further technical detail. No OpenAPI schema, request/response examples, or field-level documentation were found, so the exact request parameters (e.g., date range, granularity) and response shape (e.g., OHLC candles, close prices, timestamps) are unknown and must be discovered by calling the endpoint.","tags":[],"capabilities":["forex-history","gbp-aud","x402-payment","usdc-base","pay-per-request","json-api"],"categories":["finance","data"],"synonyms":["GBP AUD exchange rate","pound to australian dollar history","forex historical data","currency pair history","FX rate API","GBP/AUD price history"],"warnings":["No API documentation found — /docs, /pricing, /README all return only a 'Connect wallet' prompt with no technical content.","Request parameters (date range, granularity, pagination) are completely unknown.","Response schema is unknown — no examples or field descriptions available.","The endpoint description from the provider is generic ('Premium API Access') and does not describe the forex history functionality."],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/GBPAUD/history","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/forex/GBPAUD/history","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and no description of supported parameters or response fields. Effectively a stub 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