x402basequality 0.30

x402-gated Stripe invoice endpoint on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/invoices/5

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource `/api/v1/stripe/invoices/5` appears to be a Stripe invoice-related API endpoint gated behind an x402 paywall. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of $0.02 per request (20,000 base units at 6 decimals).

The broader lowpaymentfee.com platform advertises a suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto data feeds, and utility services. All endpoints share the same $0.02/request pricing with no API keys, no rate limits, and no commitments required. However, the specific endpoint being listed here (`/api/v1/stripe/invoices/5`) is not among the publicly documented API categories on the landing page, and its exact functionality is unclear — the name suggests it may relate to Stripe invoice retrieval or creation.

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 detailed description of what this particular endpoint returns or accepts. The x402 challenge confirms the endpoint is live and accepting POST requests, but the actual behavior behind the paywall is undocumented.

Capabilities

x402-paymentusdc-settlementbase-networkstripe-invoicespay-per-callno-api-key

Use cases

  • —Retrieving or interacting with Stripe invoice data via a pay-per-call model
  • —Programmatic access to invoice endpoints without API key management
  • —Agent-driven payment flows using x402 and USDC on Base

Fit

Best for

  • —Developers wanting keyless, pay-per-use API access
  • —Agents that can settle x402 payments in USDC on Base
  • —Use cases requiring Stripe invoice interaction without subscription overhead

Not for

  • —Users needing detailed API documentation or schemas before committing
  • —High-volume use cases where per-request pricing may add up
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/5 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/invoices/5
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge confirms the endpoint is live and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no request/response examples, and no documentation beyond a landing page listing. The specific endpoint's purpose (Stripe invoices) is only inferable from the URL path. Docs pages are empty.

Warnings

  • —No OpenAPI or schema documentation available
  • —The /docs, /api, /pricing, and /README pages contain no useful content — only a wallet connect prompt
  • —The specific endpoint /api/v1/stripe/invoices/5 is not listed among the publicly advertised APIs on the landing page
  • —Exact request body format and response structure are unknown
  • —The hardcoded '/5' in the path suggests this may be a single fixed resource rather than a parameterized endpoint

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:34:31Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/JZEYq7
x402-gated Stripe invoice endpoint on Base, paid per-call in USDC. — Clawmart · Clawmart