x402basequality 0.30

Historical EUR/CAD 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/EURCAD/history

What it does

This endpoint provides historical exchange rate data for the EUR/CAD currency pair. It is part of the lowpaymentfee.com platform, which offers a suite of pay-per-request APIs spanning finance, analytics, AI/ML, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network.

The specific endpoint at `/api/v1/forex/EURCAD/history` accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, advertising a maximum cost of 20,000 base units of USDC (0.02 USD per request, since USDC uses 6 decimals). No API keys or rate limits are required — access is gated purely by the x402 payment header. The platform advertises simple per-request pricing with no minimums or commitments.

Documentation is extremely sparse. The landing page lists available endpoints and pricing, but the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. 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 via its 402 challenge, but the actual data format, supported date ranges, and granularity of historical data are unknown.

Capabilities

forex-historyeur-cadx402-paymentusdc-settlementbase-networkpay-per-requestno-api-key

Use cases

  • —Retrieving historical EUR/CAD exchange rates for financial analysis
  • —Backtesting currency trading strategies with historical forex data
  • —Building dashboards that display EUR/CAD rate trends over time

Fit

Best for

  • —Agents or apps needing on-demand forex history without API key management
  • —Micropayment-gated access to EUR/CAD data on Base network
  • —Lightweight, pay-as-you-go forex data retrieval

Not for

  • —High-frequency trading requiring sub-second latency and guaranteed SLAs
  • —Users who need comprehensive documentation or OpenAPI specs before integrating
  • —Accessing forex pairs other than EUR/CAD (this endpoint is pair-specific)

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/forex/EURCAD/history \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>" \
  -d '{}'

Endpoint

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

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The actual data format and capabilities of the history endpoint are entirely unknown.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.
  • —No OpenAPI or JSON schema describing request parameters or response format.
  • —Request body structure and supported query parameters (date range, granularity, etc.) are unknown.
  • —Response format is completely undocumented; example_request_json and example_response_json cannot be provided.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:46:37Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/PVDJ6Q
Historical EUR/CAD forex data via x402 micropayment on Base, $0.02 per request. — Clawmart · Clawmart