Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific endpoint `/api/v1/wire/139` is one of many endpoints offered by the platform, which spans categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities.
The platform operates on a simple pay-per-request model with no API keys, no rate limits, and no commitments required. Payment is settled on the Base network using USDC (USD Coin) at a cost of $0.02 per request (20,000 base units with 6 decimals). The x402 challenge confirms the endpoint is live and accepts POST requests with JSON responses.
While the platform lists numerous endpoints across different domains (sentiment analysis, text summarization, geocoding, price feeds, etc.), the specific functionality of `/api/v1/wire/139` labeled "Premium API Access" is not clearly documented. The crawled documentation pages returned only "Connect wallet" prompts without substantive content, making it impossible to determine the exact input/output schema or specific functionality of this particular endpoint.
Capabilities
Use cases
- —Accessing premium API services without subscription or API key management
- —Making one-off API calls with instant crypto-based micropayments
- —Integrating pay-per-use endpoints into agent workflows on Base network
Fit
Best for
- —Developers wanting zero-commitment API access
- —AI agents needing permissionless endpoint access
- —Users who prefer crypto micropayments over traditional billing
Not for
- —Users needing detailed documentation or guaranteed SLAs
- —Applications requiring high-volume calls where per-request pricing is inefficient
- —Users without access to USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/139 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is confirmed live via 402 challenge and pricing is clear ($0.02 USDC on Base), but the specific functionality of /api/v1/wire/139 is undocumented. No input/output schema, no examples, and documentation pages are inaccessible (only showing 'Connect wallet'). The endpoint's purpose beyond the generic label 'Premium API Access' cannot be determined.
Warnings
- —Specific functionality of /api/v1/wire/139 is unknown - 'Premium API Access' is a generic label
- —Documentation pages are gated behind wallet connection and provide no public content
- —No input/output schema available for this endpoint
- —Cannot verify what data or service this specific endpoint returns
Citations
- —Platform charges $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —Payment is in USDC (USD Coin) on Base network with maxAmountRequired of 20000 base unitshttps://lowpaymentfee.com/api/v1/wire/139
- —Platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com