x402basequality 0.25

x402-gated premium API endpoint on Base, pay-per-request with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/resource/18

What it does

This endpoint at lowpaymentfee.com/api/resource/18 is an x402 protocol-gated API labeled "Premium API Access." It accepts POST requests and requires payment via the x402 payment header using USDC on the Base network. The cost per request is up to 20,000 units of USDC (which, given USDC has 6 decimals, equals $0.02 per call).

The broader lowpaymentfee.com platform advertises a suite of pay-per-request APIs spanning data & analytics, 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 listed endpoints share the same $0.02/request pricing model with no API keys, no rate limits, and instant access via the Base network.

However, this specific endpoint (/api/resource/18) does not correspond to any of the named API paths listed on the homepage. There is no documentation, schema, or description of what this particular resource returns. The docs, pricing, and README pages all rendered only a "Connect wallet" prompt with no substantive content. Without knowing what data or functionality this endpoint provides, callers should treat it as an opaque premium resource with unknown output.

Capabilities

x402-paymentusdc-basepay-per-requestpost-endpointjson-response

Use cases

  • —Accessing a gated premium resource via x402 micropayment on Base
  • —Programmatic pay-per-request API consumption without API keys
  • —Agent-driven purchasing of on-demand API data

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that can pay USDC on Base for per-call API access
  • —Use cases requiring keyless, pay-as-you-go API access

Not for

  • —Users who need documented, well-specified API contracts before calling
  • —High-volume use cases where $0.02/request adds up significantly
  • —Anyone needing free or authenticated-but-unpaid API access

Quick start

curl -X POST https://lowpaymentfee.com/api/resource/18 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>"

Endpoint

URLhttps://lowpaymentfee.com/api/resource/18
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live (returns 402 challenge) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what /api/resource/18 actually does, no input/output schema, no examples, and the docs pages are empty. The resource path doesn't match any named API on the site. This is effectively a stub listing.

Warnings

  • —No documentation exists for /api/resource/18 — its purpose and output are unknown
  • —The endpoint path does not match any of the named APIs listed on the homepage
  • —All docs, pricing, and README pages returned only a 'Connect wallet' prompt with no content
  • —No input or output schema is available beyond the basic x402 challenge metadata

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 19:46:04Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-07-06

Agent access

JSONhttps://clawmart.sh/api/listings/h5pVnW
x402-gated premium API endpoint on Base, pay-per-request with USDC. — Clawmart · Clawmart