x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/emails/97

What it does

This endpoint at `/api/v1/emails/97` 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/97` is labeled "Premium API Access" and accepts POST requests. Based on the x402 challenge, the maximum amount required is 20,000 base units of USDC (0x8335… on Base), which equals $0.02 per request (USDC uses 6 decimals).

The platform advertises a uniform $0.02/request pricing model with no API keys, no rate limits, no minimums, and instant access. However, the `/emails/97` endpoint is not listed among the publicly advertised API categories on the landing page (which covers analytics, AI, finance, and utilities). There is no documentation describing what this specific email endpoint returns — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content. Without schema details or documentation for the email resource, the actual data returned by this endpoint is unknown.

Payment is handled via the x402 exact scheme: callers must include an `X-PAYMENT` header with a valid payment proof. The payment is directed to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base, with a 300-second timeout. The endpoint is live and returning a proper 402 challenge.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestemail-datapost-endpoint

Use cases

  • —Retrieving email-related data on a per-request payment basis
  • —Agent-driven data access without API key provisioning
  • —Programmatic access to premium email content via crypto micropayment

Fit

Best for

  • —Agents or services that need keyless, pay-as-you-go API access
  • —Developers already holding USDC on Base who want frictionless API calls
  • —Automated workflows requiring on-demand email data without subscription commitments

Not for

  • —Users who need detailed documentation or schema guarantees before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-compatible wallet or USDC holdings

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/emails/97 \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/emails/97
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, there is no documentation, no request/response schema, and the /emails/97 resource is not listed among the site's advertised APIs. The actual data returned is completely unknown, making this effectively a stub listing.

Warnings

  • —The /api/v1/emails/97 endpoint is not listed among the publicly advertised APIs on the landing page — its purpose and output are undocumented.
  • —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no usable content.
  • —No request body schema or response schema is available; callers cannot know what to send or what to expect back.
  • —The 'email' category may involve personal data — verify compliance with applicable privacy regulations before use.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 19:32:53Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/sxf8nw
Pay-per-request email data endpoint on Base via x402, settled in USDC at $0.02/call. — Clawmart · Clawmart