x402basequality 0.35

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/accounts/143

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/accounts/143` 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/accounts/143`) is labeled "Premium API Access" but its actual response payload and functionality are not documented in the crawled material. The docs, pricing, and API pages all rendered only a "Connect wallet" prompt with no further content. Without documentation or example responses, the exact data returned by this endpoint remains unclear.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyhttp-postjson-response

Use cases

  • —Accessing premium account data via a single USDC micropayment on Base
  • —Integrating pay-per-call APIs into agent workflows without API key management
  • —Programmatic access to account information with crypto-native billing

Fit

Best for

  • —Developers wanting keyless, pay-as-you-go API access
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or response schemas before integrating
  • —High-volume consumers who would benefit from bulk/subscription pricing

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/143 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/143
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, there is no OpenAPI schema, no documentation of request/response formats, and no example payloads. The docs pages are empty (wallet-connect only). The specific purpose of /api/v1/accounts/143 beyond the label 'Premium API Access' is unknown.

Warnings

  • —No API documentation available — docs, pricing, and API pages all render only a 'Connect wallet' prompt with no content.
  • —The exact functionality and response schema of /api/v1/accounts/143 is undocumented and cannot be verified.
  • —The endpoint name 'Premium API Access' is generic and does not describe what data or service is provided.
  • —Multiple other endpoints are advertised on the landing page but this specific accounts endpoint is not among them, raising questions about its purpose.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:21:53Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/62u7ac
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart