Pay-per-call transaction receipt endpoint on Base via x402, $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides a transaction receipt retrieval service accessible via the x402 payment protocol. It is part of a broader platform offering multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities—all priced at $0.02 per request settled in USDC on the Base network.
The specific endpoint `/api/v1/transactions/373/receipt` returns a JSON receipt for transaction ID 373. Payment is handled inline: callers send an X-PAYMENT header containing a signed USDC payment of up to 20,000 base units ($0.02, since USDC uses 6 decimals) to the specified payTo address on Base. No API keys, rate limits, or subscriptions are required—access is purely pay-per-use.
The platform advertises instant access with no minimums or commitments. Documentation pages exist but appear gated behind a wallet connection, so detailed request/response schemas are not publicly documented. The x402 challenge confirms the endpoint is live, accepts POST requests, and returns application/json content.
Capabilities
Use cases
- —Retrieving transaction receipts programmatically with per-call payment
- —Integrating pay-per-use APIs without subscription overhead
- —Agent-driven workflows that need verifiable transaction data on demand
Fit
Best for
- —Developers wanting zero-commitment API access paid in USDC
- —AI agents that need to fetch transaction receipts autonomously
- —Projects already operating on the Base L2 network
Not for
- —High-volume batch processing where per-call pricing is inefficient
- —Users without USDC on Base network
- —Applications requiring detailed API documentation before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/transactions/373/receipt \
-H "X-PAYMENT: <signed-x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge with clear pricing and network details. However, no OpenAPI schema, no request/response examples, and documentation pages are gated behind wallet connection, leaving the actual response format unknown.
Warnings
- —Documentation pages are gated behind wallet connection—no public schema or examples available
- —The specific endpoint path includes a hardcoded transaction ID (373), suggesting it may be a single-resource endpoint rather than a general-purpose API
- —No response schema or example output is documented anywhere in the crawl
Citations
- —Endpoint returns 402 with x402 challenge accepting USDC on Base network at maxAmountRequired 20000 base unitshttps://lowpaymentfee.com/api/v1/transactions/373/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 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/transactions/373/receipt