x402basequality 0.35

USD/CHF forex 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/USDCHF

What it does

This endpoint provides USD/CHF foreign exchange rate data, accessible through the x402 payment protocol. It is part of a broader suite of APIs hosted at lowpaymentfee.com covering finance, analytics, AI/ML, crypto, and utility services. Each request costs $0.02, paid in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.

The endpoint accepts POST requests and returns JSON. Payment is handled via the x402 `X-PAYMENT` header using the "exact" scheme, settling to a specified wallet address in USDC (contract 0x8335…2913 on Base). The x402 challenge was successfully captured, confirming the endpoint is live.

Documentation beyond the landing page is extremely sparse — the /docs, /pricing, /api, and /README pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The exact structure of the forex data returned (bid/ask, mid-rate, timestamp, etc.) is unknown and must be discovered by making a paid request.

Capabilities

forex-rateusd-chfx402-paymentusdc-basemicropaymentper-request-pricingno-api-keyjson-response

Use cases

  • —Fetching real-time or recent USD/CHF exchange rates for trading bots or dashboards
  • —Integrating forex data into agent workflows that can pay per-call via x402
  • —Building financial applications that need on-demand currency conversion data without subscription commitments

Fit

Best for

  • —Agents or apps needing USD/CHF rates with zero onboarding friction
  • —x402-compatible clients that can pay in USDC on Base
  • —Low-volume or sporadic forex data needs where per-request pricing is economical

Not for

  • —High-frequency trading requiring sub-millisecond latency and bulk rate plans
  • —Users who need comprehensive multi-pair forex feeds in a single call
  • —Developers who require detailed API documentation and schema guarantees before integrating

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/forex/USDCHF \
  -H "X-PAYMENT: <x402_payment_token>" \
  -H "Content-Type: application/json"

Endpoint

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

Quality

0.35/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and no example payloads. The actual data returned is entirely unknown.

Warnings

  • —No API documentation available — /docs, /pricing, /api, and /README pages all returned only 'Connect wallet' with no content.
  • —No OpenAPI or schema definition found; request body and response structure are unknown.
  • —The exact nature of the forex data (real-time vs delayed, fields returned, data source) is undocumented.
  • —Provider hosts many diverse endpoint categories (AI, analytics, crypto, utils) all at $0.02 — quality and reliability of each is unverified.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:48:01Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/HNVBJz
USD/CHF forex rate via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart