x402-gated premium API endpoint on Base, pay-per-call with USDC.
What it does
This endpoint at lowpaymentfee.com is an x402-protocol gated API that accepts per-request payments in USDC on the Base network. The specific resource `/api/v1/stripe/charges/93` is labeled "Premium API Access" and costs $0.02 per request (20,000 base units of USDC with 6 decimals). Payment is handled via the x402 exact scheme — callers attach an X-PAYMENT header with a signed payment to the specified payTo address, and the endpoint returns a JSON response.
The broader lowpaymentfee.com platform offers a suite of APIs across several categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text 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 with no API keys, no rate limits, and no minimum commitments required.
The specific functionality behind the `/api/v1/stripe/charges/93` endpoint is unclear from available documentation. The path suggests it may relate to Stripe charge data or a Stripe-related operation, but no schema, request/response examples, or detailed documentation were found. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content. Callers should be prepared for the endpoint to accept POST requests and return application/json, but the exact input parameters and response structure are unknown.
Capabilities
Use cases
- —Programmatic access to a premium API resource with per-call USDC micropayments
- —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
- —Exploring x402 protocol integration for automated payment-gated services
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents that can sign USDC payments on Base for per-call access
- —Users who want no-signup, no-API-key access to paid endpoints
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Applications requiring fiat-only payment methods with no crypto wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/93 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <signed-x402-payment-token>"Endpoint
Quality
The endpoint is live (returns a valid 402 x402 challenge), but there is no documentation, no request/response schema, and no explanation of what the endpoint actually does. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt. The specific resource path '/api/v1/stripe/charges/93' is opaque. This is effectively a stub listing.
Warnings
- —No documentation available — docs, API, pricing, and README pages all return only 'Connect wallet' with no content
- —The specific functionality of /api/v1/stripe/charges/93 is unknown; the path suggests Stripe charge data but this is unconfirmed
- —No request or response schema is provided; callers must discover input parameters by trial
- —No OpenAPI spec, ai-plugin manifest, or agents.txt found
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base networkhttps://lowpaymentfee.com/api/v1/stripe/charges/93
- —All listed APIs cost $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com