x402basequality 0.30

Transaction receipt endpoint on Base, paid per-call via x402 with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transactions/223/receipt

What it does

This endpoint at lowpaymentfee.com provides a transaction receipt resource at `/api/v1/transactions/223/receipt`. 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 settled via the x402 protocol on the Base network using USDC.

The specific endpoint probed returns a 402 challenge requesting payment of up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) per call. Payment is made via the x402 "exact" scheme to a designated wallet address. The platform advertises a flat $0.02 per request across all its endpoints, with no API keys, no rate limits, and no minimum commitments required.

Documentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what the receipt endpoint actually returns. The endpoint is live (402 challenge confirmed), but the lack of documentation makes it difficult to know what data is returned or what input parameters are expected beyond a POST request.

Capabilities

x402-paymentusdc-settlementbase-networkper-call-pricingtransaction-receiptpay-per-use

Use cases

  • —Retrieving a transaction receipt for transaction ID 223 via a paid API call
  • —Programmatic access to receipt data without API key management
  • —Agent-driven workflows that need on-chain payment settlement per request

Fit

Best for

  • —Developers wanting keyless, pay-per-call API access on Base
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed API documentation or response schema before integrating
  • —High-volume use cases where $0.02/request adds up significantly
  • —Users without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transactions/223/receipt
# Returns 402 with x402 challenge; attach X-PAYMENT header with signed USDC payment to access.

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transactions/223/receipt
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is virtually no documentation: no OpenAPI spec, no request/response examples, no description of what the receipt contains. The docs, pricing, and README pages are all blank beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —All documentation pages (/docs, /api, /pricing, /README) render only 'Connect wallet' with no content
  • —The specific resource '/api/v1/transactions/223/receipt' is hardcoded to transaction ID 223 — unclear if this is parameterized or a single fixed resource
  • —No response examples or field definitions available; unknown what data the receipt contains
  • —Platform lists many other endpoints on its homepage but none have documented schemas

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 12:37:20Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/Ktf5eX
Transaction receipt endpoint on Base, paid per-call via x402 with USDC. — Clawmart · Clawmart