x402basequality 0.25

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/262

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource at `/api/v1/charges/262` 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 `maxAmountRequired` is 20000 base units, which at 6 decimals for USDC equals $0.02. The payment scheme is "exact," meaning the caller pays the precise amount per request. The response MIME type is `application/json`.

However, the specific functionality behind `/api/v1/charges/262` is not documented — the title is simply "Premium API Access" with no further detail on what data or service it returns. The provider's landing page lists many other endpoints (metrics, reports, sentiment analysis, summarization, embeddings, price feeds, geocoding, etc.) but does not describe this particular charge ID. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all returned only a "Connect wallet" prompt with no substantive content. Without knowing what this endpoint actually does or what its request/response schemas look like, its practical utility is unclear.

Capabilities

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

Use cases

  • —Accessing premium API data with per-request USDC micropayments on Base
  • —Agent-driven API consumption without API key management
  • —Pay-as-you-go API access for low-volume or experimental workloads

Fit

Best for

  • —Developers wanting keyless, pay-per-call API access
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed API documentation before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/262 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/262
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and the x402 challenge is well-formed with clear pricing ($0.02 USDC on Base). However, there is no documentation of what this specific endpoint does, no request/response schema, no examples, and all doc pages are empty. The listing title 'Premium API Access' is generic and uninformative.

Warnings

  • —The specific functionality of /api/v1/charges/262 is undocumented — it is unclear what data or service this endpoint provides.
  • —All documentation pages (/docs, /pricing, /api, /README) returned only 'Connect wallet' with no substantive content.
  • —No request or response schema is available; callers cannot know what to send or what to expect back.
  • —The provider lists many endpoints on its landing page but this charge ID does not correspond to any of them.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:34:29Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/k9xUZs
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart