x402basequality 0.35

EUR/NZD forex exchange rate via x402 micropayment on Base network for $0.02 per request.

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

What it does

This endpoint returns the current EUR/NZD foreign exchange rate, accessible through the x402 payment protocol on the Base network. It is part of a broader suite of pay-per-call APIs hosted at lowpaymentfee.com, which spans finance, analytics, AI/ML, crypto, and utility categories. Each request costs $0.02 (20,000 base units of USDC on Base, which has 6 decimals), settled on-chain with no API keys, no rate limits, and no subscriptions required.

The endpoint accepts POST requests and returns JSON. The x402 challenge was successfully captured, confirming the endpoint is live. Payment is made via the x402 "exact" scheme to a specified wallet address using USDC (contract 0x8335…2913 on Base). The maximum timeout for payment settlement is 300 seconds.

Documentation beyond the landing page is extremely sparse — the /docs, /pricing, /api, and /README pages all returned only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema for the forex rate endpoint. The endpoint's behavior (what fields are returned, update frequency, data source) must be inferred entirely from the URL path and the generic site description.

Capabilities

forex-rateeur-nzdx402-paymentusdc-basepay-per-requestreal-time-datajson-response

Use cases

  • —Fetching the current EUR/NZD exchange rate for trading bots or portfolio dashboards
  • —Integrating real-time forex data into financial applications without API key management
  • —Agent-driven currency conversion lookups paid per call via x402

Fit

Best for

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

Not for

  • —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
  • —Users who need historical forex time-series data (only current rate implied)
  • —Applications that cannot settle USDC payments on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/forex/EURNZD/rate \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_header>"

Endpoint

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

Quality

0.35/ 1.00

The x402 challenge confirms the endpoint is live and pricing is clear ($0.02 USDC on Base per request). However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and all documentation pages return only a wallet-connect prompt. The actual data source and response format are unknown.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —No example request or response payloads documented anywhere
  • —All documentation pages (/docs, /pricing, /api, /README) return only a 'Connect wallet' prompt with no content
  • —Response format, data source, and update frequency are entirely unknown
  • —The broader lowpaymentfee.com site lists many diverse API categories (AI, analytics, finance, utils) — unclear if all are fully implemented

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:46:40Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/HfyHmE
EUR/NZD forex exchange rate via x402 micropayment on Base network for $0.02 per request. — Clawmart · Clawmart