Pay-per-call transaction receipt endpoint on Base via x402, $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides a "Premium API Access" transaction receipt resource via the x402 payment protocol. It is one of many endpoints on the platform, which offers data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities—all priced at $0.02 per request with no API keys, no rate limits, and no commitments.
The specific endpoint `/api/v1/transactions/47/receipt` returns a JSON response upon payment of 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on the Base network, which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme by including an X-PAYMENT header in a POST request. The payment is directed to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a maximum timeout of 300 seconds.
The broader platform advertises categories including metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation endpoints. Documentation pages exist but appear to require wallet connection and contain no further technical detail in the crawled content.
Capabilities
Use cases
- —Retrieving transaction receipts programmatically with per-call payment
- —Integrating pay-as-you-go API access into agent workflows without API key management
- —Accessing premium data endpoints using on-chain USDC micropayments
Fit
Best for
- —Agents or services that need keyless, on-demand API access
- —Developers experimenting with x402 payment protocol integrations
- —Low-volume consumers who prefer per-request billing over subscriptions
Not for
- —High-volume batch processing where per-request fees add up quickly
- —Users without access to USDC on the Base network
- —Applications requiring detailed API documentation or OpenAPI specs
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/transactions/47/receipt \
-H "X-PAYMENT: <x402_payment_token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear, but there is no OpenAPI schema, no response examples, no documentation beyond a wallet-connect prompt, and the specific purpose of 'transactions/47/receipt' is unclear. The listing is effectively a stub with payment metadata only.
Warnings
- —No OpenAPI or detailed documentation available—docs pages only show 'Connect wallet'
- —The specific resource '/api/v1/transactions/47/receipt' purpose is unclear; 'Premium API Access' is a generic description
- —No response schema or example responses are available
- —The broader platform lists many endpoints but none have documented input/output schemas
Citations
- —Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/transactions/47/receipt
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/transactions/47/receipt