x402basequality 0.25

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wire/73

What it does

lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/wire/73` is listed as "Premium API Access" and returns a standard x402 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals) per call. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader lowpaymentfee.com site offers endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request. However, the specific `/api/v1/wire/73` endpoint does not clearly map to any of these named services — it may be a generic or internal wire endpoint.

Documentation is extremely sparse. The /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what data or functionality the `/api/v1/wire/73` endpoint actually returns. Callers should be aware that the actual behavior behind this endpoint is unknown from available documentation.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyhttp-post

Use cases

  • —Programmatic access to a pay-per-call API without needing API keys or subscriptions
  • —Agent-driven workflows that settle per-request costs in USDC on Base
  • —Testing x402 protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents needing keyless, pay-as-you-go API access
  • —Low-cost per-request API consumption settled on-chain

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —Anyone requiring known, well-documented response schemas before integrating
  • —High-volume use cases where $0.02/request adds up without bulk discounts

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wire/73 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wire/73
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the purpose of /api/v1/wire/73 is entirely unclear. The site's docs pages are empty beyond a wallet connect prompt. This is effectively a stub listing.

Warnings

  • —The specific endpoint /api/v1/wire/73 does not correspond to any named service on the site's landing page — its actual functionality is unknown.
  • —All documentation pages (/docs, /api, /pricing, /README) return only a 'Connect wallet' prompt with no usable content.
  • —No OpenAPI schema, no request body schema, and no response examples are available.
  • —The purpose and output of this endpoint cannot be verified from available sources.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:06:45Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/386ZYC
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart