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/50

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a variety of endpoints across data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. 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 specific endpoint at `/api/v1/customers/50` is labeled "Premium API Access" and accepts POST requests. The x402 challenge confirms it is live, requesting a maximum of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) per call. Payment is made via the x402 exact scheme to the specified payTo address, 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. However, the specific functionality behind `/api/v1/customers/50` is not documented beyond its "Premium API Access" label, and the docs, pricing, and API pages all render only a wallet-connect prompt with no additional detail. The lack of documentation about what this particular endpoint returns or expects as input is a significant gap.

Capabilities

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

Use cases

  • —Accessing premium data or customer records via a single paid POST request
  • —Agent-driven API consumption without pre-registration or API keys
  • —Programmatic pay-as-you-go access to various data, AI, and utility endpoints

Fit

Best for

  • —Developers wanting zero-signup, pay-per-call API access
  • —AI agents that can settle x402 payments on Base in USDC
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who need bulk pricing or rate-limit guarantees
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/customers/50 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/customers/50
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation of request/response formats, and the specific purpose of /api/v1/customers/50 is undocumented. The docs, pricing, and API pages are effectively empty (wallet-connect only).

Warnings

  • —The specific functionality of /api/v1/customers/50 ('Premium API Access') is not documented — unclear what data it returns or what input it expects.
  • —No OpenAPI spec, no request/response schema, and no example payloads are available.
  • —All documentation pages (docs, api, pricing, README) render only a wallet-connect prompt with no substantive content.
  • —The endpoint path suggests customer data which could involve PII — exercise caution regarding data privacy regulations.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 22:16:02Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/H7mRpu
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart