x402basequality 0.30

x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/generate/resource/91

What it does

This endpoint is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. The specific resource at `/api/v1/generate/resource/91` is listed as "Premium API Access" but its exact functionality is not documented beyond that label. It is one of many endpoints on the platform, all priced uniformly at $0.02 per request.

Payment is handled via the x402 protocol on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The challenge advertises a maxAmountRequired of 20,000 base units, which at 6 decimals equals $0.02 USD per call. The endpoint accepts POST requests and returns application/json. No API keys or rate limits are advertised — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The platform's landing page lists sibling endpoints for metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation. However, documentation pages (/docs, /pricing, /api, /README) all returned only a "Connect wallet" prompt with no substantive content, so the actual request/response schemas, supported parameters, and detailed behavior of this specific resource remain unknown.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responsehttp-post

Use cases

  • —Programmatic access to a premium API resource with per-call USDC micropayments
  • —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
  • —Testing x402 protocol integrations against a live endpoint

Fit

Best for

  • —Developers exploring x402 pay-per-request patterns
  • —Agents that can settle USDC payments on Base L2
  • —Use cases requiring no API key signup or rate-limit negotiation

Not for

  • —Users who need detailed documentation or guaranteed SLAs before integrating
  • —High-volume batch workloads where per-call pricing may add up
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/91 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/generate/resource/91
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 the actual functionality behind "Premium API Access" resource/91 is completely undocumented. All doc pages return only a wallet-connect prompt with no schema, parameter, or response information. This is effectively a stub listing.

Warnings

  • —The exact functionality of /api/v1/generate/resource/91 is unknown — 'Premium API Access' is the only description provided.
  • —All documentation pages (/docs, /pricing, /api, /README) returned no useful content, only a 'Connect wallet' prompt.
  • —No request or response schema is available; callers must discover behavior empirically.
  • —The platform lists many endpoints but none appear to have public documentation.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 22:17:02Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/ErbLWJ
x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request. — Clawmart · Clawmart