x402-gated Stripe invoice endpoint on Base, paying $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides x402-protocol access to a Stripe invoice resource (invoice ID 128). It is part of a broader platform offering pay-per-call APIs across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all gated via the x402 payment protocol on the Base network.
The specific endpoint `/api/v1/stripe/invoices/128` accepts POST requests and charges a maximum of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per call. Payment is made via the x402 exact scheme with no API keys, no rate limits, and no upfront commitments. The platform advertises uniform $0.02/request pricing across all its endpoints.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what the endpoint actually returns. The endpoint name suggests it retrieves or interacts with a Stripe invoice object, but the actual response payload and required request body are unknown. The x402 challenge is live and well-formed, confirming the endpoint is operational.
Capabilities
Use cases
- —Retrieving or interacting with Stripe invoice data via a single micropayment
- —Programmatic invoice access without API key management
- —Agent-driven payment workflows that settle in USDC on Base
Fit
Best for
- —Developers wanting keyless, pay-per-use access to Stripe invoice data
- —AI agents that can settle x402 payments on Base
- —Prototyping micropayment-gated API patterns
Not for
- —Production Stripe integrations requiring full invoice CRUD and webhooks
- —Users needing detailed API documentation or guaranteed SLAs
- —Non-crypto users who cannot settle USDC payments on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/128
# Returns 402 with x402 challenge; attach X-PAYMENT header with valid USDC payment on Base to access.Endpoint
Quality
The x402 challenge is live and well-formed, confirming the endpoint works and pricing is clear ($0.02 USDC on Base). However, there is zero documentation on request/response schemas, no OpenAPI spec, and all doc pages render only 'Connect wallet'. The actual functionality behind the endpoint is unclear beyond the name 'Stripe invoices'.
Warnings
- —No API documentation available — all doc pages show only 'Connect wallet'
- —No OpenAPI or request/response schema provided
- —Actual response payload and required request body are unknown
- —Purpose of this specific invoice endpoint (ID 128) is unclear — may be a demo or placeholder
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/stripe/invoices/128
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stripe/invoices/128