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/payments/207

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a suite of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request, payable in USDC on the Base network.

The specific endpoint `/api/v1/payments/207` is listed as "Premium API Access" but the crawled material does not clarify what data or functionality this particular route returns. The platform's homepage lists other endpoints (metrics, reports, sentiment analysis, summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation), but `/api/v1/payments/207` is not among those listed. It may be a generic or catch-all premium endpoint, or it may serve a specific function not documented on the public site.

The x402 challenge is live and well-formed: it requests an exact payment of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals) which equals $0.02. Payment is sent to address 0x1A2B…85F3. The endpoint accepts POST requests and returns application/json. No API keys or rate limits are advertised. Documentation pages (/docs, /pricing, /api, /README) all returned only a "Connect wallet" prompt with no substantive content, so the actual request/response schema for this endpoint is unknown.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responsehttp-post

Use cases

  • —Accessing a premium API endpoint with per-call USDC micropayments on Base
  • —Integrating x402-compatible payment flows into agent workflows
  • —Testing x402 protocol payment challenges against a live endpoint

Fit

Best for

  • —Developers exploring x402 payment protocol integrations
  • —Agents needing pay-per-call API access without API keys
  • —Users who want low-cost per-request pricing with no commitments

Not for

  • —Users who need detailed API documentation or schemas before integrating
  • —Anyone requiring non-crypto payment methods
  • —High-volume use cases where per-request pricing may add up

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/207 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/207
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and the specific function of this endpoint is undefined. All doc pages return only 'Connect wallet' with no content. This is effectively a stub listing.

Warnings

  • —The specific functionality of /api/v1/payments/207 is not documented anywhere on the site
  • —All documentation pages (/docs, /pricing, /api, /README) returned only 'Connect wallet' with no substantive content
  • —No request body schema or response schema is available — callers cannot know what to send or what to expect
  • —This endpoint path does not appear in the site's own listed API catalog

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 06:51:04Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/bvAQ8Y
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart