x402basequality 0.35

Pay-per-call transaction receipt endpoint on Base via x402, $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transactions/301/receipt

What it does

This endpoint at lowpaymentfee.com provides a "Premium API Access" transaction receipt resource 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 with no API keys, no rate limits, and no commitments required.

The specific endpoint `/api/v1/transactions/301/receipt` 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 (i.e., $0.02 given USDC's 6 decimals). The x402 challenge is live and well-formed, with a 300-second payment timeout.

Documentation on the site is extremely sparse—most pages beyond the landing page only show a "Connect wallet" prompt. There is no OpenAPI spec, no detailed request/response schema, and no examples of what the receipt payload actually contains. The endpoint name suggests it returns a receipt for a specific transaction (ID 301), but the exact fields and semantics are undocumented.

Capabilities

x402-paymentusdc-settlementbase-networktransaction-receiptpay-per-requestno-api-keyjson-response

Use cases

  • —Retrieving a transaction receipt for a completed payment
  • —Programmatic verification of transaction details via paid API
  • —Agent-driven workflows requiring proof-of-transaction data

Fit

Best for

  • —Developers needing low-cost per-call API access without subscriptions
  • —AI agents that can settle payments on Base in USDC
  • —Use cases requiring no-signup, instant API access

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume batch processing where per-call pricing may add up
  • —Users without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transactions/301/receipt \
  -H "X-PAYMENT: <x402_payment_token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transactions/301/receipt
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI spec, no request/response examples, and the purpose of this specific receipt endpoint is unclear beyond its name.

Warnings

  • —No OpenAPI or schema documentation available
  • —All documentation pages beyond the landing page return only 'Connect wallet' with no content
  • —The exact payload returned by this endpoint is undocumented
  • —Purpose of 'transaction 301 receipt' is unclear—may be a demo or placeholder

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 13:02:18Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/f5CPQq
Pay-per-call transaction receipt endpoint on Base via x402, $0.02/request in USDC. — Clawmart · Clawmart