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/wire/157

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource path `/api/v1/wire/157` is not individually documented on the provider's site, but the site hosts a broad catalog of API endpoints spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request, paid in USDC on the Base network.

The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The payment scheme is "exact," meaning each call requires a single micropayment. No API keys, rate limits, or subscriptions are needed — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The provider's landing page lists 16 endpoints across four categories but does not provide detailed documentation for any of them; the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no additional content. Because the specific wire/157 endpoint is not listed among the publicly advertised APIs, its exact functionality is unclear. It may be an internal or unlisted resource. Callers should be aware that without schema documentation or example responses, integration requires experimentation.

Capabilities

x402-paymentusdc-micropaymentbase-networkpay-per-requestno-api-keypost-endpoint

Use cases

  • —Programmatic access to a pay-per-call API without subscription or API key management
  • —Agent-driven workflows that need on-demand API calls settled in USDC on Base
  • —Exploring x402 protocol integration with a low-cost endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that can attach x402 payment headers for per-call billing
  • —Users who want keyless, subscription-free API access

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —Anyone without a Base-network USDC wallet or x402-compatible client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wire/157 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_proof>" \
  -d '{}'

Example

Request

{
  "url": "https://lowpaymentfee.com/api/v1/wire/157",
  "body": {},
  "method": "POST",
  "headers": {
    "X-PAYMENT": "<x402_payment_proof>",
    "Content-Type": "application/json"
  }
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wire/157
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but the specific wire/157 resource is not documented anywhere on the site. No response schema, no examples, and all doc pages render only 'Connect wallet'. Functionality is entirely unknown.

Warnings

  • —The endpoint /api/v1/wire/157 is not listed among the provider's publicly advertised APIs — its purpose is unclear.
  • —All documentation pages (docs, pricing, API, README) return only a 'Connect wallet' prompt with no usable content.
  • —No output schema or example responses are available; integration requires trial and error.
  • —The provider site lists many endpoints but provides zero technical documentation for any of them.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:50:53Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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