x402basequality 0.30

Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transactions/65

What it does

lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/transactions/65` is listed as "Premium API Access" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call. The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each request.

The broader platform offers endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at the same $0.02/request price point.

This particular endpoint (`/api/v1/transactions/65`) is labeled "Premium API Access" but its actual functionality is not documented beyond that label. The docs, pricing, and API pages on the site are essentially empty (showing only a "Connect wallet" prompt), so there is no OpenAPI schema, request/response examples, or detailed documentation available. The endpoint is live and responds with a valid x402 challenge via POST.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keypost-method

Use cases

  • —Accessing premium API data with per-request USDC micropayments
  • —Agent-driven API consumption without pre-registration or API keys
  • —Testing x402 protocol integration on Base network

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents needing keyless, pay-as-you-go API access
  • —Low-volume consumers who want no subscription commitments

Not for

  • —Users needing detailed API documentation or guaranteed SLAs
  • —High-volume production workloads where per-call crypto payments add latency
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transactions/65 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transactions/65
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the actual functionality behind 'Premium API Access' is undefined. The docs/pricing/API pages are all blank beyond a wallet connect prompt.

Warnings

  • —The actual functionality of /api/v1/transactions/65 ('Premium API Access') is not documented anywhere — it is unclear what data or service it returns.
  • —All documentation pages (docs, pricing, API, README) are effectively empty, showing only 'Connect wallet'.
  • —No OpenAPI schema, request body schema, or response schema is available.
  • —The platform's legitimacy and reliability cannot be verified from available materials.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 13:45:48Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/PdJhU2
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart