write.wallet.approve
Build unsigned approval transactions for tokens or NFTs to enable deposits and liquidity operations in Arcadia Finance. Check allowances first to avoid unnecessary approvals.
Instructions
Build an unsigned approval transaction. For ERC20 tokens: generates approve(spender, amount). For ERC721/ERC1155 NFTs (e.g. LP positions): generates setApprovalForAll(operator, true). Required before write.account.deposit or write.account.add_liquidity (when depositing from wallet). Tip: call read.wallet.allowances first to check if approval already exists — skip this if the current allowance is sufficient.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| token_address | Yes | Token contract address to approve | |
| spender_address | Yes | Address being approved — use the Arcadia account address for deposits | |
| asset_type | No | Token type: 'erc20' (default) for fungible tokens, 'erc721' or 'erc1155' for NFTs (LP positions) | erc20 |
| amount | No | ERC20 only: amount in raw units, or 'max_uint256' for unlimited. Ignored for NFTs. | max_uint256 |
| chain_id | No | Chain ID: 8453 (Base) or 130 (Unichain) |