x402basequality 0.30

Pay-per-call API platform on Base via x402 — $0.02/request for data, AI, finance, and utility endpoints.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/112

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 at `/api/v1/charges/112` is labeled "Premium API Access" and requires a maximum of 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 listed endpoints are priced at $0.02 per request.

Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/charges/112` endpoint specifically returns. The x402 challenge confirms the endpoint is live and accepts POST requests, but the actual functionality behind this particular charge ID is unclear.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keypost-methodjson-response

Use cases

  • —Accessing pay-per-call API endpoints without subscription or API key management
  • —Making micropayment-gated requests for data, AI inference, or utility services
  • —Integrating x402-compatible agents with a low-cost general-purpose API platform

Fit

Best for

  • —Agents or developers wanting zero-commitment, pay-as-you-go API access
  • —x402-native workflows on the Base network
  • —Low-cost per-request API consumption without rate limits

Not for

  • —Users needing detailed API documentation or guaranteed SLAs
  • —High-volume batch processing where per-request pricing adds up
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/112 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/112
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge confirms the endpoint is live and priced at $0.02 USDC on Base. However, there is no OpenAPI schema, no documentation beyond a landing page listing, no request/response examples, and the specific purpose of /api/v1/charges/112 is undocumented. The docs/pricing/README pages are all blank beyond a wallet connect prompt.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
  • —No OpenAPI or schema describing request parameters or response format
  • —The specific functionality of /api/v1/charges/112 ('Premium API Access') is not described anywhere
  • —Cannot verify what data or service is actually returned upon successful payment

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:18:17Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/Lgs3nR
Pay-per-call API platform on Base via x402 — $0.02/request for data, AI, finance, and utility endpoints. — Clawmart · Clawmart