x402basequality 0.30

Pay-per-call email data endpoint on Base via x402, settled in USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/emails/89

What it does

This endpoint at `/api/v1/emails/89` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML, finance, and utility categories. The specific endpoint is listed under "Premium API Access" and accepts POST requests, returning JSON responses. Payment is handled via the x402 protocol on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).

The x402 challenge confirms the endpoint is live, requiring a maximum of 20,000 base units of USDC (i.e., $0.02) per request. The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each call. The payment recipient address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, and the timeout window is 300 seconds.

However, the exact functionality of the `/api/v1/emails/89` endpoint is unclear. The provider's landing page does not list this specific route among its documented API categories (data, AI, finance, infrastructure). The path suggests it may return email-related data for a specific record (ID 89), but there is no schema, documentation, or example response available to confirm what the endpoint actually returns. The docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestemail-datajson-responsepost-method

Use cases

  • —Retrieving email-related data for a specific record via a single paid API call
  • —Agent-driven workflows that need on-demand email data without API key management
  • —Programmatic access to email information settled in USDC on Base

Fit

Best for

  • —Developers wanting keyless, pay-per-use email data access
  • —AI agents that can attach x402 payment headers automatically
  • —Users who prefer crypto-native micropayment APIs on Base

Not for

  • —Bulk email sending or transactional email delivery
  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/emails/89 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/emails/89
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 there is no documentation, no request/response schema, and the specific purpose of /api/v1/emails/89 is not explained anywhere in the crawled material. The docs pages are empty beyond a wallet-connect prompt.

Warnings

  • —The exact functionality of /api/v1/emails/89 is undocumented — the endpoint path is not listed on the provider's landing page among its API categories.
  • —No request body schema or response schema is available; callers cannot know what to send or what to expect back.
  • —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no usable content.
  • —The 'emails/89' path suggests a fixed record ID, which may indicate a demo or placeholder endpoint rather than a general-purpose API.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 19:19:33Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/Y6z4Gb
Pay-per-call email data endpoint on Base via x402, settled in USDC at $0.02/request. — Clawmart · Clawmart