x402basequality 0.35

Check ETC wallet balances via x402 micropayment on Base network for $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wallet/ETC/balance

What it does

This endpoint at lowpaymentfee.com returns Ethereum Classic (ETC) wallet balance data, gated behind the x402 payment protocol. Each request costs $0.02 (20,000 base units of USDC on the Base network, where USDC has 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof to access the data.

The endpoint is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com spanning data analytics, AI/ML inference, finance/Web3 data, and utility services, all priced at $0.02 per request. The specific endpoint probed here (`/api/v1/wallet/ETC/balance`) falls under the Finance & Web3 category and is designed to return balance information for ETC addresses.

Documentation on the site 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 schema, no request/response examples, and no description of required input parameters. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation means callers will need to experiment to determine the expected POST body format and response structure.

Capabilities

x402-paymentetc-wallet-balancecrypto-balance-lookupusdc-base-settlementpay-per-request

Use cases

  • —Querying ETC wallet balances programmatically without managing API keys
  • —Building portfolio trackers that need on-demand ETC balance lookups
  • —Agent-driven workflows that need to verify ETC holdings before executing trades

Fit

Best for

  • —Developers who want keyless, pay-per-call access to ETC balance data
  • —AI agents that can settle x402 micropayments on Base
  • —Applications needing simple crypto balance checks without subscription overhead

Not for

  • —High-volume balance monitoring where $0.02/request adds up quickly
  • —Users who need balances for chains other than ETC from this specific endpoint
  • —Anyone requiring detailed transaction history or token-level breakdowns beyond balance

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wallet/ETC/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -d '{"address": "0xYourETCAddress"}'

Example

Request

{
  "address": "0x1234567890abcdef1234567890abcdef12345678"
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wallet/ETC/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge and clear pricing ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no examples, and the site's docs pages are empty. The request body and response structure are entirely inferred.

Warnings

  • —No API documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no technical content
  • —Request body format is unknown and inferred; the example_request_json is a guess
  • —Response schema is completely unknown
  • —No OpenAPI or machine-readable schema provided

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:37:05Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/KwhGMh
Check ETC wallet balances via x402 micropayment on Base network for $0.02 per request. — Clawmart · Clawmart