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/customers/79

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a variety of endpoints across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, paid in USDC on the Base network with no API keys, no rate limits, and no commitments required. The x402 protocol handles payment inline: callers attach a payment header to each request and receive the response immediately.

The specific endpoint at `/api/v1/customers/79` is listed as "Premium API Access" and returns `application/json`. Based on the x402 challenge, it accepts POST requests and charges a maximum of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) per call, settled to a wallet on Base. The broader platform advertises endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation.

Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The endpoint is confirmed live (402 challenge captured), but the actual behavior and data returned by `/api/v1/customers/79` specifically is unclear from available materials.

Capabilities

x402-paymentusdc-base-networkpay-per-requestjson-apino-api-keypost-method

Use cases

  • —Accessing premium data endpoints without API key registration
  • —Making one-off API calls with per-request USDC micropayments
  • —Agent-driven workflows that need instant, keyless API access on Base

Fit

Best for

  • —Developers who want zero-signup API access via crypto micropayments
  • —AI agents that can settle x402 payments autonomously
  • —Users already on the Base network with USDC

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —Applications requiring fiat-only payment rails
  • —High-volume use cases where per-request payment overhead is impractical

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/customers/79 \
  -H "X-PAYMENT: <x402-payment-header>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/customers/79
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC per call). However, documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, and no examples. The specific purpose of /api/v1/customers/79 is unclear beyond the generic 'Premium API Access' label.

Warnings

  • —Documentation pages (/docs, /pricing, /api, /README) contain no substantive content — only a 'Connect wallet' prompt.
  • —No OpenAPI or schema documentation available; request and response formats are unknown.
  • —The specific purpose and data returned by /api/v1/customers/79 is not documented anywhere in the crawl.
  • —The platform lists many endpoint categories (AI, finance, analytics, etc.) but none have documented schemas or examples.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 20:00:15Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/eR6tkf
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart