x402basequality 0.35

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/invoices/174

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/174`) suggests it returns or processes a Stripe invoice object. Payment is settled on the Base network using USDC (contract 0x8335…2913) via the x402 "exact" scheme.

The x402 challenge indicates a maximum amount 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 their API offerings. The provider advertises no API keys, no rate limits, and instant access; callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader lowpaymentfee.com platform lists endpoints across 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 per-call price point. However, this specific listing is for the Stripe invoices endpoint only. Documentation pages on the site returned minimal content (just "Connect wallet"), so the exact request/response schema for this endpoint is unknown.

Capabilities

x402-paymentusdc-basestripe-invoicesper-call-billingno-api-key

Use cases

  • —Retrieving or processing a Stripe invoice via a pay-per-call x402 gateway
  • —Programmatic invoice access without traditional API key management
  • —Agent-driven payment workflows that settle in USDC on Base

Fit

Best for

  • —Developers wanting keyless, pay-per-request access to Stripe invoice data
  • —AI agents that can settle x402 payments autonomously on Base
  • —Prototyping micropayment-gated API flows

Not for

  • —Bulk invoice processing requiring thousands of calls (costs add up at $0.02 each)
  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —Non-crypto workflows that cannot produce x402 payment proofs

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/174 \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/invoices/174
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and the documentation pages are effectively empty. The purpose of this specific Stripe invoices endpoint is unclear beyond its name.

Warnings

  • —No API documentation available — all doc pages return only 'Connect wallet' with no content
  • —Request and response schemas are completely unknown; no OpenAPI spec provided
  • —The specific functionality of /api/v1/stripe/invoices/174 is unclear — it may be a demo or placeholder
  • —The site lists many diverse endpoints (AI, finance, geo, etc.) all at $0.02, which may indicate a demo/showcase platform rather than production services

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:20:50Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/cDu95P
x402-gated Stripe invoice endpoint on Base, paying per-call in USDC. — Clawmart · Clawmart