x402basequality 0.30

x402-gated premium API access on Base network, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. The site hosts a collection of pay-per-request APIs spanning data & analytics, AI & machine learning (sentiment analysis, 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, settled in USDC on Base.

The specific endpoint `/api/v1/accounts/68` is labeled "Premium API Access" and requires a payment of up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) per call. Payment is made via the x402 exact scheme with no API keys or rate limits required — callers simply attach an X-PAYMENT header with a valid payment proof. The endpoint accepts POST requests and returns application/json responses.

Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/accounts/68` endpoint actually returns. The site's landing page lists many endpoints but does not clarify what data or functionality this particular accounts endpoint provides.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-responsepost-method

Use cases

  • Accessing premium data or account information with per-request USDC micropayments
  • Integrating pay-as-you-go API calls into agent workflows without managing API keys
  • Settling API costs on-chain via Base network USDC

Fit

Best for

  • Developers wanting keyless, pay-per-use API access
  • Agents that can settle x402 payments on Base
  • Users who prefer on-chain micropayments over subscriptions

Not for

  • Users needing detailed API documentation or schemas before integrating
  • High-volume use cases where per-request payment overhead is impractical
  • Users without access to USDC on Base network

Quick start

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

Endpoint

Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and no explanation of what the /api/v1/accounts/68 endpoint actually does. Effectively a stub listing.

Warnings

  • No documentation available — docs/pricing/README pages only show 'Connect wallet'
  • No OpenAPI or request/response schema provided
  • Purpose of /api/v1/accounts/68 is unclear — 'Premium API Access' is not descriptive
  • Cannot verify what data or functionality is returned after payment

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:36:01Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

x402-gated premium API access on Base network, pay $0.02 per request in USDC. — Clawmart · Clawmart