x402-gated premium API access on Base, paid per-call in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. It is part of a broader platform that offers a variety of API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all gated via the x402 protocol on the Base network and settled in USDC.
The specific endpoint `/api/v1/stripe/subscriptions/97` is listed as "Premium API Access" and costs up to $0.02 per request (maxAmountRequired of 20,000 base units of USDC with 6 decimals = $0.02). Payment is made via the x402 exact scheme: callers attach an X-PAYMENT header with a signed payment to the payTo address on Base. No API keys, rate limits, or upfront commitments are required — you pay per call.
The platform's documentation pages (docs, pricing, README) all appear to require a wallet connection and contain no additional rendered content in the crawl. As a result, the exact behavior and response format of this particular endpoint are unclear. The endpoint name suggests it may relate to Stripe subscription management, but no schema, example payloads, or detailed documentation were found. The x402 challenge confirms the endpoint is live and accepting POST requests.
Capabilities
Use cases
- —Accessing premium API functionality with per-request USDC micropayments on Base
- —Agent-driven API consumption without API keys or subscriptions
- —Programmatic access to gated services using x402 payment protocol
Fit
Best for
- —Developers wanting keyless, pay-per-use API access
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over traditional subscriptions
Not for
- —Users needing detailed API documentation before purchasing
- —Applications requiring non-crypto payment methods
- —High-volume use cases where subscription pricing would be cheaper
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/97 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment-token>"Endpoint
Quality
The x402 challenge is live and confirms pricing and payment details, but no documentation, request/response schema, or examples are available. The endpoint's actual functionality is unclear — the name suggests Stripe subscription management but this is unconfirmed. All doc pages returned only 'Connect wallet' with no useful content.
Warnings
- —No API documentation, request schema, or response schema available — endpoint behavior is unknown
- —All documentation pages (docs, pricing, README) require wallet connection and returned no useful content
- —The endpoint path references 'stripe/subscriptions' but its actual functionality is unverified
- —No OpenAPI spec or ai-plugin manifest found
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/stripe/subscriptions/97
- —The platform advertises $0.02 per 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/97