Query CELO wallet balance via x402 micropayment on Base network for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides CELO wallet balance data as part of a broader suite of Finance & Web3 APIs. It uses the x402 payment protocol, accepting USDC payments on the Base network. Each request costs $0.02 (20,000 base units of USDC with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid payment proof.
The provider offers a range of endpoints across data analytics, AI/ML inference, finance/crypto, and infrastructure utilities, all priced uniformly at $0.02 per call. This specific endpoint (`/api/v1/wallet/CELO/balance`) appears to return balance information for a CELO wallet, though the exact request and response schemas are not documented beyond the x402 challenge metadata.
Payment is settled on the Base L2 network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The endpoint accepts POST requests and returns application/json. The x402 challenge confirms the endpoint is live and discoverable.
Capabilities
Use cases
- —Checking CELO token balance for a wallet address programmatically
- —Building portfolio trackers that need on-demand balance queries
- —Automated agents verifying wallet balances before transactions
Fit
Best for
- —Developers needing pay-per-call crypto balance data without API key management
- —AI agents that can settle x402 payments autonomously
- —Low-volume or sporadic balance lookups where subscription pricing is wasteful
Not for
- —High-frequency balance polling where $0.02/call adds up quickly
- —Users who need multi-chain balance aggregation in a single call
- —Applications requiring WebSocket streaming of balance updates
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wallet/CELO/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_proof>" \
-d '{"address": "0xYourCeloWalletAddress"}'Example
Request
{
"address": "0x1234567890abcdef1234567890abcdef12345678"
}Endpoint
Quality
The x402 challenge is live and confirms pricing, network, and asset. However, there is no documented request/response schema, no OpenAPI spec, and the crawled docs/pricing/README pages are empty stubs showing only 'Connect wallet'. The exact input parameters and response format are inferred.
Warnings
- —No documented request or response schema available
- —Documentation pages (/docs, /pricing, /README) return only 'Connect wallet' with no useful content
- —Response format is entirely inferred — no example responses available
- —The specific functionality of this endpoint (what wallet address format, what balance fields are returned) is not documented
Citations
- —Endpoint returns 402 with x402 challenge accepting USDC on Base network at 20000 base unitshttps://lowpaymentfee.com/api/v1/wallet/CELO/balance
- —All APIs priced at $0.02 per request with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/wallet/CELO/balance