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/transfers/179

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 pay-per-request at $0.02 each, settled in USDC on the Base network. No API keys, rate limits, or upfront commitments are required — callers simply attach an x402 payment header to each request.

The specific endpoint at `/api/v1/transfers/179` is listed as "Premium API Access" and advertises a max amount of 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base). Since USDC uses 6 decimals, this equals $0.02 per call. The endpoint accepts POST requests and returns application/json responses. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

The broader platform advertises endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and data generation — all at the same $0.02 price point. However, documentation is extremely sparse: the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled content. The exact functionality of the `/api/v1/transfers/179` endpoint specifically is unclear from the available material.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-responsepost-method

Use cases

  • —Accessing paid API endpoints without registration or API keys
  • —Making micropayment-gated API calls settled in USDC on Base
  • —Agent-driven workflows that need on-demand paid data or utility endpoints

Fit

Best for

  • —Developers wanting zero-signup, pay-as-you-go API access
  • —AI agents that can settle x402 payments autonomously
  • —Users already holding USDC on Base who want frictionless API consumption

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume use cases where per-request pricing may add up without bulk discounts
  • —Developers who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transfers/179 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/179
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the specific purpose of the /transfers/179 endpoint is undocumented. Effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available — endpoint behavior must be discovered empirically
  • —Docs, API, pricing, and README pages all render only 'Connect wallet' with no technical content
  • —The exact functionality of /api/v1/transfers/179 ('Premium API Access') is not described anywhere in the crawled material
  • —No request body schema or response examples are available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:04:17Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

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