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/154

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 payment wall. The specific resource path (`/api/v1/stripe/invoices/154`) suggests it returns or processes a Stripe invoice record. Payment is settled on the Base network using USDC (contract 0x8335…2913) via the x402 "exact" scheme.

The x402 challenge indicates a maximum cost of 20,000 base units of USDC. Since USDC uses 6 decimals, this converts to $0.02 per request — consistent with the provider's site-wide pricing of $0.02/request across all endpoints. The provider advertises no API keys, no rate limits, and instant access. The endpoint accepts HTTP POST and returns application/json.

The broader lowpaymentfee.com platform hosts multiple API categories including data/analytics, AI/ML (sentiment, summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation) — all at the same $0.02/request price point. However, this specific listing covers only the `/api/v1/stripe/invoices/154` endpoint. Documentation pages (/docs, /pricing, /api, /README) returned no meaningful content beyond a wallet-connect prompt, so the actual request/response schema for this endpoint is unknown.

Capabilities

x402-paymentusdc-settlementbase-networkstripe-invoicejson-responseper-call-pricing

Use cases

  • —Retrieving or processing a specific Stripe invoice via a crypto-paid API call
  • —Demonstrating x402 payment protocol integration with USDC on Base
  • —Agent-driven invoice lookup without traditional API key authentication

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that need keyless, pay-per-call access to invoice data
  • —Projects already using USDC on Base for micropayments

Not for

  • —Production invoice management requiring bulk operations or webhooks
  • —Users who need detailed API documentation and response schemas before integrating
  • —Anyone needing free or subscription-based access rather than per-call crypto payments

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/154 \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/invoices/154
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and the purpose of this specific invoice endpoint is unclear. All doc pages returned only a wallet-connect prompt with no content.

Warnings

  • —No API documentation available — /docs, /pricing, /api, and /README pages are effectively empty
  • —Request body schema and response schema are completely unknown
  • —The endpoint path references a specific invoice ID (154), which may be a static demo resource rather than a general-purpose API
  • —Provider site lists many endpoint categories but none match this specific Stripe invoices path

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:19:29Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/Jt287C
x402-gated Stripe invoice endpoint on Base, paid per-call in USDC. — Clawmart · Clawmart