Pay-per-request email data endpoint on Base via x402, settled in USDC at $0.02/call.
What it does
This endpoint at `/api/v1/emails/26` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML, finance, infrastructure, and more. All endpoints use the x402 payment protocol, settling in USDC on the Base network. The specific resource at `/emails/26` is labeled "Premium API Access" in the x402 challenge, but the provider's landing page does not list any `/emails/` routes among its documented APIs, and no further documentation describes what this endpoint returns.
The x402 challenge confirms the endpoint is live and accepts POST requests. The price is 20,000 base units of USDC (6 decimals), which equals $0.02 per request — consistent with the uniform $0.02 pricing advertised across all the provider's endpoints. Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base, with a 300-second timeout. No API key or account registration is required; access is gated entirely by the x402 micropayment.
Because the `/emails/26` path is not documented on the provider's site and no response schema or example output is available, the actual data returned by this endpoint is unknown. It may return email-related data (e.g., a specific email record or template), but this is speculative. The broader platform advertises categories like analytics, AI inference, finance, and utilities, all at the same $0.02 price point, but the crawled documentation pages were effectively empty (showing only "Connect wallet").
Capabilities
Use cases
- —Retrieving email-related data via a single micropayment without needing an API key
- —Integrating pay-per-request email lookups into agent workflows on Base
- —Testing x402 protocol integrations with a low-cost endpoint
Fit
Best for
- —Developers experimenting with x402 micropayment protocol
- —Agents needing keyless, pay-as-you-go API access on Base
- —Low-volume, on-demand data retrieval without subscription commitments
Not for
- —Production workloads requiring documented response schemas and SLAs
- —High-volume email operations where per-request pricing is inefficient
- —Users who need detailed API documentation before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/emails/26 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but the /emails/26 path is not listed in the provider's documented APIs, no response schema or example output exists, and all documentation pages beyond the landing page are empty. The actual functionality of this endpoint is unknown.
Warnings
- —The /api/v1/emails/26 path is not listed among the provider's documented APIs on the landing page
- —No response schema, request body schema, or example output is available
- —All documentation pages (/docs, /api, /pricing, /README) returned only 'Connect wallet' with no content
- —The purpose and data returned by this specific endpoint are unknown
Citations
- —The x402 challenge returns maxAmountRequired of 20000 in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network with 300s timeouthttps://lowpaymentfee.com/api/v1/emails/26
- —The provider advertises uniform $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The provider lists APIs in categories: Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure — but no /emails/ endpointshttps://lowpaymentfee.com