x402basequality 0.30

x402-gated API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/62

What it does

lowpaymentfee.com offers a collection of pay-per-request API endpoints gated by the x402 protocol on the Base network. The specific endpoint at `/api/v1/charges/62` is labeled "Premium API Access" and accepts USDC payments on Base. The x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (6 decimals), which equals $0.02 per request.

The provider's landing page lists four categories of endpoints: 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 (geocoding, validation, conversion, generation). All are priced at $0.02 per request. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an x402 payment header to each request.

Documentation is extremely sparse. The /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what the `/api/v1/charges/62` endpoint actually returns. The endpoint is live (returns a valid 402 challenge), but without documentation it is unclear what data or functionality "Premium API Access" provides or how it differs from the other listed endpoints.

Capabilities

x402-paymentper-request-billingusdc-basepay-per-useno-api-keyhttp-post

Use cases

  • —Programmatic access to a pay-per-call API without needing API keys or subscriptions
  • —Agent-driven workflows that need on-demand API calls settled in USDC on Base
  • —Testing x402 payment flows against a live endpoint

Fit

Best for

  • —Developers exploring x402 payment protocol integrations
  • —Agents that need keyless, pay-as-you-go API access on Base
  • —Low-volume callers who want no subscription commitment

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —High-volume production workloads where $0.02/request adds up without volume discounts
  • —Anyone needing clarity on exactly what data the endpoint returns before paying

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/62 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/62
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, but documentation is effectively nonexistent — every doc page shows only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and no description of what 'Premium API Access' actually returns. The listing is a stub.

Warnings

  • —No documentation available — /docs, /api, /pricing, and /README all return only 'Connect wallet'
  • —No OpenAPI or output schema describing what the endpoint returns
  • —The purpose of '/api/v1/charges/62' ('Premium API Access') is unclear and may differ from the other listed endpoints
  • —Cannot verify what data or service is delivered after payment

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:07:40Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/5dc3Ph
x402-gated API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart