x402basequality 0.30

x402-gated premium API access 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/benefits/21

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a broad catalog of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform share a uniform $0.02-per-request pricing model settled in USDC on the Base network.

The specific endpoint `/api/v1/benefits/21` is labeled "Premium API Access" but the crawled documentation does not detail what data or functionality it returns. It is not listed among the publicly advertised API categories (analytics, AI, finance, infrastructure), so its exact purpose is unclear. The x402 challenge confirms it is live, accepts POST requests, and charges a maximum of 20,000 base units of USDC (0.02 USD) per call. Payment is made via the x402 exact scheme to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, with a 300-second timeout.

The platform advertises no API keys, no rate limits, and instant access. Documentation pages beyond the landing page returned only a "Connect wallet" prompt with no additional technical detail. Without an OpenAPI spec, request/response schemas, or examples, the exact input parameters and output format for this endpoint remain unknown.

Capabilities

x402-paymentusdc-basepay-per-requestpost-endpointno-api-key

Use cases

  • —Accessing premium data or functionality behind a per-request USDC paywall
  • —Integrating pay-per-call APIs without managing API keys or subscriptions
  • —Agent-driven API consumption with on-chain micropayments

Fit

Best for

  • —Developers wanting keyless, pay-as-you-go API access
  • —AI agents that can settle x402 payments on Base
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed documentation or OpenAPI specs before integrating
  • —Applications requiring free or high-volume bulk access at discounted rates
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/benefits/21 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/benefits/21
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 there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page, and the specific purpose of /api/v1/benefits/21 is undocumented. This is effectively a stub listing.

Warnings

  • —The exact functionality of /api/v1/benefits/21 is not documented anywhere in the crawled material.
  • —No OpenAPI spec, request schema, or response schema is available.
  • —Documentation pages (/docs, /api, /pricing, /README) all returned only a 'Connect wallet' prompt with no usable content.
  • —This endpoint is not listed among the publicly advertised API categories on the landing page.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 16:18:15Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/mgvE5b
x402-gated premium API access on Base, pay-per-call with USDC at $0.02/request. — Clawmart · Clawmart