x402basequality 0.35

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transactions/286

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. It accepts POST requests and charges 0.02 USDC per call (maxAmountRequired of 20000 base units with 6 decimals = $0.02). Payment is settled in USDC (contract 0x8335…2913) on Base L2, with no API keys, no rate limits, and instant access.

The provider hosts a broader suite of endpoints spanning 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/request with the same x402 payment model.

This specific endpoint (/api/v1/transactions/286) is labeled "Premium API Access" but lacks detailed documentation on what data or functionality it returns. The docs, pricing, and API pages on the site require a wallet connection and provide no further schema or example responses. The endpoint is confirmed live (402 challenge captured), but the actual response payload after payment is undocumented.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyno-rate-limitpost-method

Use cases

  • —Programmatic access to premium data or services without subscription commitments
  • —Agent-driven API consumption with per-call USDC micropayments
  • —Testing x402 payment protocol integrations on Base

Fit

Best for

  • —Developers wanting zero-signup, pay-as-you-go API access
  • —AI agents with crypto wallets that can settle x402 challenges
  • —Users who prefer no rate limits and no API key management

Not for

  • —Users needing detailed API documentation or response schemas before purchasing
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Users without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transactions/286 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transactions/286
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is confirmed live via 402 challenge and pricing is clear ($0.02 USDC on Base). However, there is no documentation on what the endpoint actually returns, no request/response schema, and the specific resource path (/api/v1/transactions/286) is not explained anywhere on the site. Docs pages only show 'Connect wallet' with no content.

Warnings

  • —No documentation available for what this endpoint returns after payment
  • —The resource path /api/v1/transactions/286 is not listed among the site's advertised APIs
  • —All doc/pricing/API pages require wallet connection and show no useful content
  • —No OpenAPI spec, no response schema, no example responses available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 13:01:59Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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