x402basequality 0.30

Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/174

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource at `/api/v1/charges/174` 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 on the Base network with no API keys, rate limits, or commitments required.

The x402 challenge confirms the endpoint is live, accepting POST requests and settling payments in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base). The max amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02 per call. The payment timeout is 300 seconds. The response MIME type is `application/json`.

However, the specific functionality behind `/api/v1/charges/174` is not documented — the description is simply "Premium API Access" with no further detail on what data or service it returns. The provider's landing page lists numerous other endpoints (metrics, reports, sentiment analysis, summarization, etc.) but this particular charge ID is not among them. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all returned only a "Connect wallet" prompt with no substantive content. Without knowing what this endpoint actually does, callers should treat it as an opaque paid resource.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestjson-responseno-api-key

Use cases

  • —Programmatic access to a paid API resource without traditional API key management
  • —Agent-driven workflows that need to pay per call using USDC on Base
  • —Testing x402 payment protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers experimenting with x402 payment flows
  • —AI agents that can settle micropayments in USDC on Base
  • —Use cases requiring keyless, pay-as-you-go API access

Not for

  • —Users who need detailed documentation on what the endpoint returns before paying
  • —High-volume use cases where $0.02/request adds up without volume discounts
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/174 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/174
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but the specific functionality behind /api/v1/charges/174 is completely undocumented. No OpenAPI schema, no request/response examples, and all documentation pages are empty. The listing is essentially a stub with confirmed pricing and liveness but unknown utility.

Warnings

  • —The specific resource /api/v1/charges/174 is not listed among the provider's documented endpoints — its actual functionality is unknown.
  • —All documentation pages (/docs, /pricing, /api, /README) returned no substantive content beyond 'Connect wallet'.
  • —No request or response schema is available; callers cannot know what to send or what they will receive.
  • —The provider lists many endpoints on its landing page but none match this specific charge ID.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:24:24Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/eyJ5Fn
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart