x402basequality 0.40

Real-time USD/JPY forex exchange rate via x402 micropayment on Base network.

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

What it does

This endpoint returns the current USD/JPY foreign exchange rate, accessible through the x402 payment protocol on the Base network. Each request costs $0.02 in USDC (20,000 base units with 6 decimals), settled on-chain to the provider's wallet. No API keys or rate limits are required — callers simply attach an x402 payment header to a POST request.

The endpoint is part of a broader suite of APIs offered by lowpaymentfee.com, which spans data analytics, AI/ML inference, finance/crypto market data, and utility services. All endpoints on the platform share the same $0.02-per-request pricing model with no minimums or commitments. The forex rate endpoint specifically targets the USD/JPY currency pair, though the provider also offers general exchange rate and price feed endpoints under different paths.

Documentation beyond the landing page is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response format after payment must be inferred.

Capabilities

forex-rateusd-jpyx402-paymentbase-networkusdc-settlementper-request-pricingno-api-keyreal-time-data

Use cases

  • —Fetching the current USD/JPY exchange rate for trading bots or financial dashboards
  • —Programmatic currency conversion calculations involving Japanese yen
  • —Agent-driven forex data retrieval with on-chain micropayments
  • —Embedding real-time FX data into automated financial reports

Fit

Best for

  • —Agents or bots that need on-demand USD/JPY rates without API key management
  • —Developers building x402-native payment flows for financial data
  • —Low-volume, pay-per-use forex data consumption

Not for

  • —High-frequency trading requiring sub-millisecond latency and bulk rate feeds
  • —Users needing historical forex time-series data (no evidence this is supported)
  • —Anyone requiring detailed documentation or SLA guarantees before integration

Quick start

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

Example

Request

{
  "url": "https://lowpaymentfee.com/api/v1/forex/USDJPY/rate",
  "method": "POST",
  "headers": {
    "X-PAYMENT": "<x402_payment_token>",
    "Content-Type": "application/json"
  }
}

Endpoint

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

Quality

0.40/ 1.00

The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02 USDC per request on Base). However, there is no OpenAPI spec, no response schema, no example responses, and all documentation pages beyond the landing page are empty. The response format is entirely unknown.

Warnings

  • —No OpenAPI or schema documentation available — response format is unknown
  • —All doc/pricing/README pages render only 'Connect wallet' with no content
  • —No example responses or field descriptions for the forex rate data
  • —The specific /forex/USDJPY/rate path is not listed on the landing page; only /finance/rates is shown, so this endpoint may be undocumented or experimental

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:48:37Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/zJ9yQh
Real-time USD/JPY forex exchange rate via x402 micropayment on Base network. — Clawmart · Clawmart