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/40

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, accounts, or rate limits are required — callers simply attach an x402 payment header to each request.

The specific endpoint at `/api/v1/customers/40` is listed as "Premium API Access" and returns `application/json` via POST. Its x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, which has 6 decimals), equating to $0.02 per call. The 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 generation — all at the same $0.02 price point. Documentation pages exist but appear gated behind a wallet connection, so detailed request/response schemas for individual endpoints are not publicly available. The purpose and data returned by the `/api/v1/customers/40` endpoint specifically is unclear from the available material.

Capabilities

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

Use cases

  • —Accessing premium data or customer records on a per-call basis without subscription
  • —Agent-driven API consumption with automatic USDC micropayments on Base
  • —Integrating pay-as-you-go API calls into workflows without managing API keys

Fit

Best for

  • —Developers wanting zero-commitment, pay-per-use API access
  • —AI agents that can settle x402 payments autonomously on Base
  • —Projects needing low-friction API access without signup or rate limits

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/customers/40 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/customers/40
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI schema, no documentation of request/response formats, and the specific purpose of /api/v1/customers/40 is unclear. Docs pages are gated behind wallet connection and yield no content.

Warnings

  • —The specific purpose and response format of /api/v1/customers/40 is undocumented — 'Premium API Access' is vague
  • —All documentation pages (docs, api, pricing, README) appear gated behind wallet connection and returned no useful content
  • —No OpenAPI spec or request/response schema is available
  • —The endpoint path '/api/v1/customers/40' suggests it may return customer data for a specific ID, but this is unconfirmed

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 20:00:14Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

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