x402-gated Stripe subscription endpoint on Base, paid per-call in USDC.
What it does
This endpoint at lowpaymentfee.com provides a "Premium API Access" resource behind an x402 payment challenge. It is part of a broader platform that offers a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all settled on the Base network using USDC via the x402 protocol.
The specific endpoint `/api/v1/stripe/subscriptions/160` appears to relate to Stripe subscription management. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0x8335… on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform advertises uniform $0.02/request pricing across all its endpoints, with no API keys, no rate limits, and instant access. Payment is made via the x402 `exact` scheme, meaning the caller must attach a cryptographic payment proof in the `X-PAYMENT` header for each request.
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 schema, no request/response examples, and no description of what the endpoint actually returns or what parameters it accepts beyond the POST method. The endpoint is confirmed live (returns a valid 402 challenge), but the lack of documentation makes it difficult to determine the exact functionality or expected input/output format.
Capabilities
Use cases
- —Programmatically managing or querying Stripe subscription data via a crypto-settled API call
- —Integrating pay-per-request subscription management into an agent workflow without traditional API keys
- —Accessing Stripe subscription information from a Web3-native application
Fit
Best for
- —Developers who want API-key-free, pay-per-call access to subscription data
- —Agent systems that can natively settle x402 payments on Base
- —Web3 applications needing Stripe integration without traditional auth
Not for
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —High-volume use cases where $0.02/request adds up significantly
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/160 \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but documentation is effectively nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and no explanation of what the endpoint does beyond the label 'Premium API Access'. The actual functionality of the Stripe subscriptions endpoint is unclear.
Warnings
- —Documentation pages (docs, API, pricing, README) all render only 'Connect wallet' with no usable content.
- —No OpenAPI or schema available — request parameters and response format are unknown.
- —The purpose of '/api/v1/stripe/subscriptions/160' is unclear; it may be a demo or placeholder endpoint.
- —No request or response examples are available anywhere in the crawled material.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/stripe/subscriptions/160
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/stripe/subscriptions/160