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/9

What it does

This endpoint at lowpaymentfee.com exposes a Stripe invoice resource (`/api/v1/stripe/invoices/9`) behind an x402 paywall. When called without payment, it returns a 402 challenge requesting USDC on the Base network. The endpoint accepts POST requests and returns JSON.

The specific endpoint listed here costs $0.02 per request (20,000 base units of USDC with 6 decimals = $0.02), settled on-chain to a designated wallet address. No API keys or rate limits are advertised — callers simply attach an X-PAYMENT header with a valid x402 payment proof. The x402 challenge specifies a 300-second timeout for payment completion.

The broader lowpaymentfee.com platform advertises multiple API categories at the same $0.02/request price point, including data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto data feeds, and utility services (geocoding, validation, conversion). However, documentation beyond the landing page is essentially empty — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. The actual behavior and response format of this specific Stripe invoices endpoint is not documented, making it unclear what data it returns.

Capabilities

x402-paymentusdc-settlementbase-networkstripe-invoicesper-call-pricingno-api-keyjson-response

Use cases

  • —Retrieving Stripe invoice data via a per-call USDC micropayment
  • —Demonstrating x402 protocol payment flows for API access
  • —Integrating pay-per-use invoice lookups into agent workflows

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents needing on-demand Stripe invoice data without API key management
  • —Low-volume, pay-as-you-go API consumption on Base

Not for

  • —High-volume invoice processing where subscription pricing is more economical
  • —Users who need detailed API documentation and response schemas before integrating
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/9 \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/invoices/9
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming it is operational. However, there is no documentation of request parameters, response schema, or what the Stripe invoices endpoint actually returns. The docs, API, pricing, and README pages are all blank beyond a wallet-connect prompt. The listing is effectively a stub with only the payment challenge as evidence of functionality.

Warnings

  • —No documentation available — docs, API, pricing, and README pages are all empty (show only 'Connect wallet')
  • —Response schema and request parameters for /api/v1/stripe/invoices/9 are completely undocumented
  • —It is unclear what data this Stripe invoices endpoint actually returns
  • —No OpenAPI spec or AI plugin manifest found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:38:32Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/t7Nxgr
x402-gated Stripe invoice endpoint on Base, paid per-call in USDC. — Clawmart · Clawmart