x402basequality 0.25

Pay-per-call API suite on Base via x402 — analytics, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/endpoint-89

What it does

lowpaymentfee.com offers a collection of pay-per-request API endpoints accessible via the x402 payment protocol on the Base network. The specific endpoint `/api/endpoint-89` is listed as "Premium API Access" and accepts USDC payments on Base. Based on the x402 challenge, the maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per request — consistent with the site's advertised flat pricing.

The broader platform advertises 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 listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.

However, the specific functionality of `/api/endpoint-89` is not documented — it does not correspond to any of the named endpoints on the landing page. 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 documentation available. The endpoint is confirmed live (402 challenge returned), but what it actually does beyond "Premium API Access" is unknown.

Capabilities

x402-paymentusdc-basepay-per-requesthttp-postno-api-key

Use cases

  • —Programmatic access to undocumented premium API functionality via x402 micropayments
  • —Agent-driven API consumption without API key management
  • —Pay-as-you-go API access settled in USDC on Base

Fit

Best for

  • —Developers exploring x402 payment protocol integrations
  • —Agents that need keyless, pay-per-call API access on Base
  • —Users comfortable with crypto-native micropayment workflows

Not for

  • —Anyone needing documented, well-specified API contracts before integrating
  • —Users who require fiat payment options or traditional API key authentication
  • —Production systems that need SLA guarantees or detailed error handling docs

Quick start

curl -X POST https://lowpaymentfee.com/api/endpoint-89 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/endpoint-89
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific function of /api/endpoint-89 is completely undocumented. The docs and other pages are empty beyond a wallet connect prompt. This is effectively a stub listing.

Warnings

  • —The specific endpoint /api/endpoint-89 is not listed among the named endpoints on the landing page — its actual functionality is unknown.
  • —All documentation pages (docs, API, pricing, README) returned only 'Connect wallet' with no substantive content.
  • —No OpenAPI schema, request format, or response format is available.
  • —No information about rate limits, uptime guarantees, or error handling is provided.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 21:03:16Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/VkcUhQ
Pay-per-call API suite on Base via x402 — analytics, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart