Transaction receipt retrieval via x402 micropayment on Base network for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides access to a transaction receipt (resource ID 141) behind an x402 paywall. It is part of a broader platform that offers a variety of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.
The specific endpoint `/api/v1/transactions/141/receipt` accepts POST requests and returns a JSON response upon successful payment. The x402 challenge confirms the endpoint is live, requiring an exact payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimal places. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.
The platform advertises no API keys, no rate limits, and instant access. However, documentation pages (/docs, /pricing, /api, /README) all returned only a "Connect wallet" prompt with no substantive content, so the actual response schema and detailed behavior of this endpoint are unknown. The broader site lists many endpoint categories but provides no OpenAPI spec, example requests, or example responses.
Capabilities
Use cases
- —Retrieving a transaction receipt for a specific transaction (ID 141) via programmatic micropayment
- —Demonstrating x402 protocol integration for pay-per-call API access
- —Agents that need to fetch financial or transactional records without pre-registration
Fit
Best for
- —Developers experimenting with x402 payment protocol on Base
- —Agents needing no-auth, pay-per-use API access settled in USDC
- —Quick one-off transaction receipt retrieval without subscription commitments
Not for
- —Bulk or high-volume receipt retrieval where per-call pricing adds up
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/transactions/141/receipt \
-H "X-PAYMENT: <x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation content (all doc pages show only 'Connect wallet'), no example request/response, and the specific purpose of this receipt endpoint (transaction 141) is opaque. The listing is effectively a stub with confirmed liveness.
Warnings
- —All documentation pages (/docs, /pricing, /api, /README) returned no useful content — only a 'Connect wallet' prompt.
- —No OpenAPI or schema describing the request body or response format for this endpoint.
- —The endpoint references a hardcoded transaction ID (141); it is unclear whether this is a generic receipt endpoint or specific to one transaction.
- —The broader platform lists many endpoints across categories but none have documented schemas or examples.
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base network, equaling $0.02.https://lowpaymentfee.com/api/v1/transactions/141/receipt
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access.https://lowpaymentfee.com
- —USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/transactions/141/receipt
- —Documentation pages (/docs, /pricing, /api, /README) all returned only 'Connect wallet' with no substantive content.https://lowpaymentfee.com/docs