Current Balance

Reads a wallet's current ERC-20 token balance with a read-only balanceOf call on Base, Ethereum, Arbitrum, Optimism, Polygon, BSC, or Avalanche.

Overview

Reads a wallet's current ERC-20 token balance with a read-only balanceOf call on Base, Ethereum, Arbitrum, Optimism, Polygon, BSC, or Avalanche. Exact buyer-demand slug. Uses public RPC only, co-fetches decimals, returns raw and decimal-formatted balance, and supports historical block reads. No custody, transfers, trading, or investment advice. Use it as a current balance API or wallet token balance lookup.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/current-balance	$0.00575	Invoke Current Balance (Blockchain) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i -X POST https://api.jarvisclaw.ai/v1/marketplace/api/current-balance \
  -H 'Content-Type: application/json' \
  -d '{}'

# 2. Pay it (the SDK signs and retries for you)
curl -X POST https://api.jarvisclaw.ai/v1/marketplace/api/current-balance \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace