x402basequality 0.40

AUD/CAD forex exchange rate via x402 micropayment on Base for $0.02 per request.

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

What it does

This endpoint provides the AUD/CAD (Australian Dollar to Canadian Dollar) foreign exchange rate through an x402-enabled API hosted at lowpaymentfee.com. Each request costs $0.02 (20,000 base units of USDC on the Base network, where USDC has 6 decimals). No API keys or rate limits are required — payment is handled per-request via the x402 protocol using an exact-payment scheme.

The provider, lowpaymentfee.com, offers a broad catalog of pay-per-call endpoints spanning finance, AI/ML, data analytics, and utility services, all priced at $0.02 per request. This specific endpoint is a POST-based forex rate lookup for the AUD/CAD currency pair, returning JSON. The x402 challenge was successfully captured, confirming the endpoint is live and accepting payments to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base.

Documentation beyond the landing page is sparse — the /docs, /pricing, and /README pages all returned only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema, and no example payloads available from the crawl. The endpoint's exact input parameters and response format must be inferred from the URL pattern (currency pair in the path) and the declared mimeType of application/json.

Capabilities

forex-rateaud-cadx402-paymentusdc-baseper-request-pricingno-api-keyjson-response

Use cases

  • —Fetching real-time AUD/CAD exchange rates for trading bots or portfolio dashboards
  • —Embedding live forex data into financial applications without managing API keys
  • —Agent-driven currency conversion workflows that pay per call via x402

Fit

Best for

  • —Developers needing on-demand AUD/CAD forex rates without subscription commitments
  • —AI agents that can settle micropayments on Base via x402
  • —Applications requiring keyless, pay-per-use forex data

Not for

  • —High-frequency trading requiring sub-millisecond latency and bulk rate plans
  • —Users who need historical forex time-series data (no evidence this endpoint provides it)
  • —Teams without crypto wallets or USDC on Base

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/forex/AUDCAD/rate \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/forex/AUDCAD/rate
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.40/ 1.00

The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and the docs pages are empty beyond a wallet-connect prompt. The listing is functional but minimally documented.

Warnings

  • —No OpenAPI or request/response schema available — input parameters and response format are unknown.
  • —Documentation pages (/docs, /pricing, /README) returned no useful content.
  • —No example responses available to verify data quality or format.
  • —The broader lowpaymentfee.com catalog lists many endpoint categories but the specific forex endpoint's data source is undisclosed.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:47:05Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/NYhb7J
AUD/CAD forex exchange rate via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart