x402basequality 0.35

Query LRC (Loopring) wallet balance 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/LRC/balance

What it does

This endpoint at lowpaymentfee.com returns the wallet balance for LRC (Loopring) tokens. 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 are gated via the x402 protocol, settling payments in USDC on the Base network.

The specific endpoint `/api/v1/wallet/LRC/balance` accepts POST requests and costs $0.02 per call (20,000 base units of USDC with 6 decimals). Payment is made inline via the X-PAYMENT header — no API keys, accounts, or rate limits are required. The x402 challenge was successfully captured, confirming the endpoint is live and accepting payments to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.

Documentation is extremely sparse. The provider's landing page lists available endpoints and pricing but the /docs, /pricing, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The exact request body format and response structure must be inferred or discovered experimentally.

Capabilities

wallet-balance-querylrc-loopringx402-paymentusdc-base-networkpay-per-requestno-api-keycrypto-data

Use cases

  • —Check LRC (Loopring) token balance for a given wallet address
  • —Integrate wallet balance monitoring into trading bots or portfolio dashboards
  • —Verify LRC holdings before executing on-chain transactions
  • —Build alerting systems that track wallet balance changes

Fit

Best for

  • —Developers needing quick, keyless LRC balance lookups
  • —Agents or bots that can settle x402 micropayments on Base
  • —Projects that want pay-per-use pricing without subscription commitments

Not for

  • —Bulk historical balance queries (no batch or historical endpoint documented)
  • —Users who cannot settle USDC payments on the Base network
  • —Production use cases requiring well-documented request/response schemas

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wallet/LRC/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>" \
  -d '{"address": "0xYourWalletAddress"}'

Example

Request

{
  "address": "0x1234567890abcdef1234567890abcdef12345678"
}

Endpoint

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

Quality

0.35/ 1.00

The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no examples, and the docs/pricing/README pages are all empty beyond a wallet-connect prompt. The request body and response format are entirely inferred.

Warnings

  • —No API documentation available — /docs, /pricing, and /README pages all show only 'Connect wallet' with no technical content
  • —No OpenAPI or schema specification found
  • —Request body format and response structure are unknown and must be discovered experimentally
  • —The example_request_json is speculative — actual required fields are undocumented

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:33:35Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/C3T5t7