x402basequality 0.35

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transactions/375/receipt

What it does

This x402-enabled endpoint at lowpaymentfee.com provides a transaction receipt resource at `/api/v1/transactions/375/receipt`. It is part of a broader platform offering multiple API categories — 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 probed returns an x402 challenge (HTTP 402) requesting payment of 20,000 base units of USDC (0x8335…2913 on Base network), which equals $0.02 USD (USDC uses 6 decimals). Payment is settled on-chain via the Base L2 network using the "exact" scheme. The endpoint accepts POST requests and returns `application/json` responses. The x402 version is 1 with a max timeout of 300 seconds.

While this particular path (`/transactions/375/receipt`) appears to serve a transaction receipt, the platform lists many other endpoints across analytics, AI inference (sentiment, summarization, classification, embeddings), finance (price feeds, exchange rates, token quotes, gas estimates), and utility services (geocoding, validation, conversion, generation). Documentation pages exist but returned only a "Connect wallet" prompt with no substantive content during the crawl, so the actual response schemas and detailed behavior of each endpoint remain undocumented from the crawl data.

Capabilities

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

Use cases

  • —Retrieving transaction receipts via pay-per-call without API key registration
  • —Programmatic access to financial or transactional data with on-chain USDC settlement
  • —Agent-driven workflows that need low-friction, keyless API access on Base

Fit

Best for

  • —Agents or services that can settle USDC payments on Base L2
  • —Use cases requiring keyless, no-signup API access
  • —Low-volume or sporadic callers who prefer per-request pricing over subscriptions

Not for

  • —Users who cannot transact in USDC on the Base network
  • —High-volume consumers who need bulk pricing or subscription discounts
  • —Anyone needing detailed API documentation — current docs are essentially empty

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transactions/375/receipt \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transactions/375/receipt
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no OpenAPI schema, no response examples, and the documentation pages are empty (only showing 'Connect wallet'). The specific purpose of this transaction receipt endpoint is unclear, and the broader platform's actual functionality is unverifiable from the crawl data.

Warnings

  • —Documentation pages (/docs, /api, /pricing, /README) all returned only 'Connect wallet' with no substantive content
  • —No OpenAPI or schema documentation available for any endpoint
  • —The specific endpoint path /api/v1/transactions/375/receipt suggests a resource-specific URL (transaction ID 375) rather than a general-purpose API — unclear if this is a demo or a real resource
  • —Response schema and actual payload content are unknown

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 13:38:26Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/MErS7R
Pay-per-call transaction receipt endpoint on Base via x402, settled in USDC at $0.02/request. — Clawmart · Clawmart