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 path `/api/v1/transactions/322/receipt`) gated behind an x402 payment challenge. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units, which equals $0.02 USD (USDC uses 6 decimals). No API keys or rate limits are required — access is granted per-request upon payment.
The provider, lowpaymentfee.com, hosts a broader suite of x402-gated APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto market data, and infrastructure utilities. All endpoints are listed at $0.02 per request with the same pay-per-use model on the Base network. However, this specific listing is for the transaction receipt endpoint only.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live via a valid 402 challenge response, but the actual data returned after payment is unknown from the available material.
Capabilities
Use cases
- —Retrieving a transaction receipt for transaction ID 322 via micropayment
- —Programmatic access to receipt data without API key management
- —Agent-driven workflows that need on-demand transaction documentation
Fit
Best for
- —Developers wanting keyless, pay-per-use API access on Base
- —AI agents with x402-compatible payment capabilities
- —Quick one-off transaction receipt lookups
Not for
- —Bulk retrieval of many transaction receipts (no batch endpoint documented)
- —Users who need detailed API documentation or response schema guarantees before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/transactions/322/receipt \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The specific purpose of this receipt endpoint is unclear beyond its URL path. This is effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown
- —All documentation pages (docs, API, pricing, README) return only a 'Connect wallet' prompt with no technical content
- —The endpoint is for a specific transaction ID (322); it is unclear whether this is a demo or a production resource
- —No information on what fields the receipt contains or what input the POST body expects
Citations
- —Endpoint returns 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/transactions/322/receipt
- —maxAmountRequired is 20000 base units of USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02https://lowpaymentfee.com/api/v1/transactions/322/receipt
- —All APIs priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —Provider offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categorieshttps://lowpaymentfee.com