x402basequality 0.30

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/endpoint-46

What it does

This endpoint at /api/endpoint-46 is part of the lowpaymentfee.com platform, which offers a collection of x402 protocol-gated APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. The specific functionality of endpoint-46 is not documented — the site lists numerous endpoints under versioned paths (e.g., /api/v1/*, /api/v2/*), but /api/endpoint-46 does not appear among them. It is described only as "Premium API Access" in the x402 challenge.

The endpoint is live and returns a valid x402 payment challenge. It accepts POST requests and requires payment in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on the Base network. The maximum amount required per request is 20,000 units (in the token's smallest denomination — for USDC with 6 decimals this equates to $0.02). The platform advertises flat $0.02/request pricing across all endpoints, no API keys, no rate limits, and instant access.

Because the endpoint path does not match any of the documented API routes and no input/output schema beyond the basic HTTP POST method is provided, the actual functionality behind this endpoint is unknown. Users should treat this as an opaque premium endpoint until further documentation is available.

Capabilities

x402-paymentusdc-paymentbase-networkpay-per-requesthttp-post

Use cases

  • —Programmatic access to a premium API service via x402 micropayments
  • —Agent-driven API consumption without API keys or subscriptions
  • —On-chain pay-per-request access using USDC on Base

Fit

Best for

  • —Developers wanting keyless, pay-per-use API access
  • —AI agents that can handle x402 payment challenges
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed documentation or known input/output schemas before integrating
  • —Anyone requiring free or non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/endpoint-46
# Returns 402 with X-PAYMENT challenge; attach a valid x402 payment header to proceed.

Example

Response

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://lowpaymentfee.com/api/endpoint-46",
      "description": "Premium API Access",
      "maxAmountRequired": "20000",
      "maxTimeoutSeconds": 300
    }
  ],
  "x402Version": 1
}

Endpoint

URLhttps://lowpaymentfee.com/api/endpoint-46
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but /api/endpoint-46 is not listed among the site's documented APIs. There is no input/output schema, no documentation of what the endpoint actually does, and the crawled docs/pricing/README pages returned only 'Connect wallet' with no useful content. The actual functionality is entirely unknown.

Warnings

  • —Endpoint path /api/endpoint-46 does not appear in the provider's documented API catalog
  • —No input or output schema available — actual functionality is unknown
  • —Documentation pages (/docs, /pricing, /README) returned no meaningful content
  • —The description 'Premium API Access' is generic and does not clarify what the endpoint does

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 19:36:40Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/5arw4J
x402-gated premium API endpoint on Base, pay-per-request with USDC. — Clawmart · Clawmart