x402basequality 0.35

Historical NZD/JPY 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/NZDJPY/history

What it does

This endpoint provides historical forex data for the NZD/JPY currency pair. It is part of the lowpaymentfee.com platform, which offers a range of data, AI, finance, and utility APIs all gated behind x402 micropayments on the Base network using USDC.

The endpoint accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment on Base. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. There are no API keys, no rate limits, and no subscription commitments — each request is independently paid.

The broader lowpaymentfee.com platform lists endpoints across categories including analytics, AI/ML (sentiment analysis, summarization, classification, embeddings), finance (price feeds, exchange rates, crypto quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation), all at the same $0.02/request price point. Documentation beyond the landing page is sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail. No OpenAPI schema or request/response examples are provided, so the exact request body format and response structure for this forex history endpoint must be discovered experimentally.

Capabilities

forex-historynzd-jpyx402-paymentusdc-basemicropaymentper-request-pricingjson-api

Use cases

  • —Retrieving historical NZD/JPY exchange rate data for backtesting trading strategies
  • —Building dashboards or reports that include historical forex movements
  • —Feeding forex history into financial models or risk calculations
  • —Agent-driven forex analysis workflows that pay per query

Fit

Best for

  • —Developers needing on-demand forex history without API key management
  • —AI agents that can pay per request via x402 on Base
  • —Low-volume or sporadic forex data needs where subscriptions are wasteful

Not for

  • —High-frequency trading requiring sub-second latency and bulk historical downloads
  • —Users who need comprehensive multi-pair forex data in a single call
  • —Anyone unable to transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/forex/NZDJPY/history \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-signed-payment>" \
  -d '{}'

Endpoint

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

Quality

0.35/ 1.00

The endpoint is live (returns a valid 402 x402 challenge) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no documentation of request parameters or response format, and no examples. The docs/pricing/README pages are all blank beyond a wallet-connect prompt. The listing is effectively a stub with confirmed liveness.

Warnings

  • —No documentation available — docs, pricing, and README pages all show only 'Connect wallet' with no technical content.
  • —No request or response schema provided; callers must discover the API contract experimentally.
  • —The specific forex history endpoint is not listed on the landing page's available APIs section, raising questions about its discoverability and support status.
  • —No OpenAPI or ai-plugin manifest found.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:52:44Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/R6DzpF
Historical NZD/JPY forex data via x402 micropayment on Base, $0.02 per request. — Clawmart · Clawmart