token-allowance

Token Allowance Manager

A security-focused skill to manage ERC20 token approvals. It allows agents to check current allowances, approve spenders (like DEX routers), and revoke permissions to secure funds.

Quick Start

# Check if Uniswap Router has access to my USDC
allowance = await agent.run_tool(
    "manage_allowance",
    action="check",
    token_address="0xA0b8...",
    spender_address="0xE592..."
)

# Approve 100 USDC
await agent.run_tool(
    "manage_allowance",
    action="approve",
    token_address="0xA0b8...",
    spender_address="0xE592...",
    amount=100.0
)

Scripts

Script	Purpose
allowance.py	Checks and manages ERC20 allowances

Environment Variables

Variable	Required	Description
WEB3_RPC_URL	Yes	RPC URL for the blockchain
PRIVATE_KEY	Yes	Required for 'approve' and 'revoke' actions

Best Practices

1. Always check allowance before approving (avoid unnecessary txs).
2. Approve exact amounts rather than infinite (security best practice).
3. Revoke allowances for unused DApps to prevent hacks.