x402basequality 0.35

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/78

What it does

This endpoint at lowpaymentfee.com exposes a Stripe invoice resource (`/api/v1/stripe/invoices/78`) behind an x402 paywall. When called without payment, it returns a 402 challenge requesting USDC on the Base network. The specific resource appears to be a single Stripe invoice lookup, though the site does not provide detailed documentation for this particular path.

The parent site lowpaymentfee.com hosts a broader catalog of pay-per-request APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request, payable in USDC on Base with no API keys, no rate limits, and no commitments required.

The probed endpoint charges a maximum of 20,000 base units of USDC (6 decimals), which equals $0.02 per call. Payment is sent to `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the exact payment scheme. The endpoint accepts HTTP POST and returns `application/json`. Documentation beyond the landing page is essentially empty — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no substantive content.

Capabilities

x402-paymentusdc-basestripe-invoicepay-per-requestno-api-keyjson-response

Use cases

  • —Retrieving Stripe invoice data via a single paid API call
  • —Programmatic invoice access without traditional API key management
  • —Agent-driven invoice retrieval with on-chain USDC micropayment

Fit

Best for

  • —Developers wanting keyless, pay-per-use access to invoice data
  • —AI agents that can settle x402 payments in USDC on Base
  • —Prototyping x402 payment flows against a live endpoint

Not for

  • —Bulk invoice processing requiring thousands of calls (no volume discounts documented)
  • —Users who need detailed API documentation or SDKs before integrating
  • —Anyone needing non-USDC or non-Base payment options

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/78
# Returns 402 with x402 challenge; attach X-PAYMENT header with signed USDC payment to proceed.

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/invoices/78
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 schema, no request/response examples, and all documentation pages are empty stubs showing only 'Connect wallet'. The specific purpose of the /stripe/invoices/78 path is unclear — it could be a demo or a real invoice proxy. Very little can be verified beyond the 402 challenge itself.

Warnings

  • —No API documentation available — /docs, /pricing, /api, and /README pages are all empty
  • —No request body schema or response schema documented for this endpoint
  • —The path '/api/v1/stripe/invoices/78' references a hardcoded invoice ID (78); unclear if this is a demo or production resource
  • —No OpenAPI spec or ai-plugin manifest found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:46:36Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

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