x402basequality 0.30

Pay-per-request API platform on Base network via x402 — $0.02/call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/policies/68

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/policies/68` is listed as "Premium API Access" and returns a 402 challenge requiring 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 — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader lowpaymentfee.com 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 priced at $0.02 per request and settle in USDC on Base.

The `/api/v1/policies/68` endpoint specifically is labeled "Premium API Access" but no further documentation describes what data or functionality it returns. The docs, pricing, and API pages on the site are gated behind a wallet-connect flow and yielded no additional content during crawl. Without schema details or example responses, the exact payload structure is unknown.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keyjson-responsepost-method

Use cases

  • —Accessing premium API data with per-request USDC micropayments on Base
  • —Integrating pay-as-you-go API calls into autonomous agents without API key management
  • —Programmatic access to policy data or premium content behind x402 paywall

Fit

Best for

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

Not for

  • —Users who need detailed API documentation or OpenAPI schemas before integrating
  • —High-volume consumers who want bulk pricing or subscription discounts
  • —Developers who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/policies/68 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/policies/68
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no example request/response, and the docs pages are empty behind a wallet-connect gate. The purpose of the specific /policies/68 endpoint is entirely unclear beyond the generic label 'Premium API Access'.

Warnings

  • —No documentation available — docs, pricing, and API pages all resolve to a wallet-connect prompt with no content
  • —The exact functionality of /api/v1/policies/68 is undocumented; 'Premium API Access' is the only description
  • —No OpenAPI spec or output schema provided beyond the basic x402 challenge metadata
  • —No example request or response bodies are available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 08:15:56Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/M2Xc8p
Pay-per-request API platform on Base network via x402 — $0.02/call in USDC. — Clawmart · Clawmart