x402basequality 0.30

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

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

What it does

This endpoint at lowpaymentfee.com returns the balance of an ICP (Internet Computer) wallet. It is part of a broader suite of pay-per-call APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network.

The specific endpoint `/api/v1/wallet/ICP/balance` accepts POST requests and returns JSON. Payment is handled inline via the X-PAYMENT header — no API keys, accounts, or rate limits are required. The x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (6 decimals), which equals $0.02 per request. The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base, using the USDC contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`.

Documentation is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what parameters the POST body expects or what the response shape looks like. The endpoint is confirmed live (402 challenge returned), but the actual functionality and response format must be inferred from the URL path alone.

Capabilities

icp-wallet-balancex402-paymentusdc-base-settlementpay-per-requestno-api-keycrypto-balance-lookup

Use cases

  • —Querying ICP wallet balances programmatically without managing API keys
  • —Integrating ICP balance lookups into agent workflows that support x402 payments
  • —Building dashboards or bots that monitor ICP holdings

Fit

Best for

  • —Agents or apps that already support x402 payment flows on Base
  • —Quick one-off ICP balance checks without account setup
  • —Developers who want keyless, pay-per-call crypto data access

Not for

  • —Bulk or high-frequency balance monitoring where $0.02/call adds up quickly
  • —Users who need detailed ICP transaction history or staking info (not offered here)
  • —Anyone needing well-documented request/response schemas before integration

Quick start

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

Example

Request

{
  "address": "abc123-example-icp-principal-id"
}

Endpoint

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

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing. However, there is no documentation, no OpenAPI schema, no request/response examples, and no description of accepted parameters or response format. The request body and response are entirely inferred from the URL path. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no content.
  • —No OpenAPI or schema definition; request body parameters and response format are unknown.
  • —Example request JSON is speculative — the actual required fields are undocumented.
  • —The provider lists many endpoints across diverse categories (AI, analytics, finance, utilities) all at $0.02, which may indicate a demo or placeholder service rather than production-grade APIs.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:33:08Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/6u6z6q
Check ICP wallet balances via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart