x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/policies/49

What it does

This endpoint at lowpaymentfee.com is part of a suite of x402-protocol pay-per-call APIs hosted on the Base network. The specific resource `/api/v1/policies/49` is labeled "Premium API Access" and accepts POST requests gated by an x402 payment challenge. Payment is settled in USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals).

The broader lowpaymentfee.com platform advertises endpoints across four categories: 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 priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments. However, the specific `/api/v1/policies/49` endpoint does not clearly map to any of these advertised categories, and no documentation describes what data or functionality it returns.

The endpoint is confirmed live — it returns a proper HTTP 402 x402 challenge. However, documentation pages (/docs, /api, /pricing, /README) all returned only a "Connect wallet" stub with no meaningful content. There is no OpenAPI schema, no request/response examples, and no description of what the "policies/49" resource actually provides. Agents should be aware that the actual payload and behavior of this endpoint are unknown beyond the x402 payment metadata.

Capabilities

x402-paymentpay-per-requestusdc-settlementbase-networkhttp-post

Use cases

  • —Paying per-request for API access without API keys or subscriptions
  • —Integrating x402-compatible agents with low-cost endpoints on Base
  • —Accessing premium content or data behind a USDC micropayment wall

Fit

Best for

  • —Agents that support x402 payment protocol on Base
  • —Developers wanting keyless, pay-as-you-go API access
  • —Low-cost per-call usage without rate limits or commitments

Not for

  • —Users who need detailed API documentation or schemas before integrating
  • —Applications requiring free or subscription-based access models
  • —Use cases needing guaranteed SLAs or support

Quick start

# The endpoint requires an x402 X-PAYMENT header with USDC on Base.
# Using curl as an example (you need an x402-compatible client to sign payment):
curl -X POST https://lowpaymentfee.com/api/v1/policies/49 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <signed-x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/policies/49
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC per request). However, there is no documentation, no OpenAPI schema, no request/response examples, and the purpose of '/api/v1/policies/49' is entirely undocumented. All doc pages returned empty stubs.

Warnings

  • —No documentation available — /docs, /api, /pricing, and /README all return only 'Connect wallet' with no content.
  • —The purpose and response format of /api/v1/policies/49 are completely unknown.
  • —No OpenAPI or output schema provided beyond basic HTTP method metadata.
  • —This endpoint does not map to any of the advertised API categories on the landing page.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 08:01:29Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

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