Operations Reference

Detailed guides for each multicall operation in TypeScript.

For Solidity multicall encoding, see Multicalls.

Why This Section?

The main multicalls.md covers the basics: SDK service helpers, combining with raw encoding, and a complete example. This section goes deeper on each operation - when you need it, complete examples, and what can go wrong.

Quick Reference

Operation	SDK Helper	When to Use	Guide
Add Collateral	prepareAddCollateral()	Deposit tokens to increase health factor	Adding Collateral
Increase Debt	prepareIncreaseDebt()	Borrow from pool	Debt Management
Decrease Debt	prepareDecreaseDebt()	Repay borrowed funds	Debt Management
Update Quota	prepareUpdateQuota()	Enable/adjust quota token exposure	Updating Quotas
Withdraw Collateral	prepareWithdrawCollateral()	Remove tokens from account	Withdrawing Collateral
Slippage Control	Manual encoding	Protect swaps from sandwich attacks	Controlling Slippage
External Calls	Manual encoding	Interact with Uniswap, Curve, etc.	Making External Calls
Enable/Disable Token	Manual encoding	Explicit collateral management	Enabling/Disabling Tokens
Price Updates	Manual encoding	Update Pyth/Redstone feeds	Updating Price Feeds
Check Params	Manual encoding	Optimize gas, set min health factor	Collateral Check Params
Revoke Allowances	Manual encoding	Security measure after suspicious activity	Revoke Allowances

Page Structure

Each operation guide follows the same structure:

1. Why - When you need this operation

2. What - What it does and how it fits the system

3. How - Working TypeScript code

4. Gotchas - Common mistakes and edge cases

5. See Also - Related operations and Solidity reference

SDK Helpers vs Manual Encoding

Five operations have SDK helpers via createCreditAccountService:

• prepareAddCollateral(token, amount)

• prepareIncreaseDebt(amount)

• prepareDecreaseDebt(amount)

• prepareUpdateQuota(token, change, minQuota)

• prepareWithdrawCollateral(token, amount, to)

Six operations require manual encoding with viem's encodeFunctionData:

• storeExpectedBalances / compareBalances

• enableToken / disableToken

• onDemandPriceUpdate

• setFullCheckParams

• revokeAdapterAllowances

All manual encoding uses iCreditFacadeV300MulticallAbi from @gearbox-protocol/sdk.

Related

• Multicalls Overview - Basic patterns and complete example

• Credit Accounts - Account data and services

• Solidity Multicalls - On-chain implementation details