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/charges/16

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. It is one of many endpoints offered by the provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, payable in USDC (USD Coin) on Base with no API keys, no rate limits, and no commitments required.

The specific endpoint `/api/v1/charges/16` is listed as "Premium API Access" and accepts POST requests. The x402 challenge confirms it is live, requesting a maximum of 20,000 base units of USDC (0.02 USD given 6 decimals) per call, settling to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`. The response MIME type is `application/json`.

Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what data or functionality this particular endpoint returns. The provider's landing page lists many other endpoints (analytics, AI inference, finance, utilities) but does not clarify what `/api/v1/charges/16` specifically does beyond the generic label "Premium API Access." Without documentation or example payloads, the actual capability of this endpoint remains unclear.

Capabilities

x402-paymentusdc-settlementbase-networkjson-responsepost-methodpay-per-requestno-api-key

Use cases

  • —Paying per-request for API access without needing API keys or subscriptions
  • —Integrating x402-compatible agents that settle payments in USDC on Base
  • —Accessing premium data or services with instant, keyless authentication via on-chain payment

Fit

Best for

  • —Developers or agents already using x402-compatible wallets on Base
  • —Use cases requiring keyless, pay-as-you-go API access
  • —Low-volume or sporadic API consumers who want no commitments

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscription models
  • —Anyone unable to pay in USDC on the Base network

Quick start

# Send a POST with x402 payment header to access the endpoint
curl -X POST https://lowpaymentfee.com/api/v1/charges/16 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/16
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC per request on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and the purpose of this specific endpoint (/api/v1/charges/16) is entirely unclear beyond the generic 'Premium API Access' label. Docs pages return only 'Connect wallet' with no content.

Warnings

  • —No documentation available — all doc/API/pricing/README pages render only 'Connect wallet' with no useful content.
  • —The specific functionality of /api/v1/charges/16 ('Premium API Access') is not described anywhere; it is unclear what data or service it provides.
  • —No OpenAPI schema, no request body schema, and no response examples are available.
  • —The provider lists many endpoints on its landing page but this specific charge endpoint does not map clearly to any of them.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:17:10Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/QpzaY3
x402-gated premium API access on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart