x402basequality 0.35

x402-gated Stripe invoice endpoint on Base, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/invoices/139

What it does

This endpoint at lowpaymentfee.com provides x402-protocol access to a Stripe invoice resource (invoice #139). It is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all gated via the x402 payment protocol on the Base network using USDC.

The specific endpoint `/api/v1/stripe/invoices/139` is labeled "Premium API Access" and accepts POST requests. Payment is settled on-chain on Base to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per request. The x402 challenge was successfully captured with version 1, scheme "exact", and a 300-second payment timeout.

The platform advertises a uniform $0.02/request pricing model with no API keys, no rate limits, and instant access. However, documentation is extremely sparse — the docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content. The exact behavior and response format of this particular invoice endpoint are unknown; there is no OpenAPI spec, no request/response examples, and no detailed documentation available. The endpoint is live (402 challenge confirmed), but what data it actually returns upon successful payment is unclear.

Capabilities

x402-paymentusdc-settlementbase-networkstripe-invoicepay-per-requestno-api-key

Use cases

  • —Retrieving Stripe invoice data via a single micropayment without API key registration
  • —Programmatic access to invoice #139 details for automated billing workflows
  • —Agent-driven payment and data retrieval using x402 protocol on Base

Fit

Best for

  • —Developers wanting keyless, pay-per-request access to invoice data
  • —AI agents that can settle x402 payments on Base in USDC
  • —Users who prefer on-chain micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or response schema before purchasing
  • —Bulk invoice retrieval across many invoice IDs (only invoice 139 is exposed at this endpoint)
  • —Users who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/139 \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/invoices/139
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation beyond a wallet-connect prompt, no request/response examples, and the purpose of this specific invoice endpoint is ambiguous. Effectively a stub listing.

Warnings

  • —No OpenAPI specification or schema available
  • —All documentation pages (docs, API, pricing, README) return only 'Connect wallet' with no content
  • —The exact response payload and request body format are unknown
  • —Purpose of 'Stripe invoice #139' endpoint is unclear — it may be a demo or placeholder
  • —No robots.txt or agents.txt found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:23:57Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/UkJgVJ
x402-gated Stripe invoice endpoint on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart