# Supportive methods
#### Fetching list of vaults
This method returns a promise that resolves to an array of vault objects, each containing:
* Address
* Name
* Timestamp of creation
* Block number of creation
```typescript
const vaults = await sdk.data.getVaults();
```
#### Fetching client data
This method returns the range of pool IDs (minimum to maximum) associated with a given client, as well as the client's name:
```typescript
const { minPool, maxPool, clientName } = await sdk.data.getClientData(integratorAddress, vault);
```
#### Activate pool
Once the Yelay team assigns a pool range to a client and their `integratorAddress`, each `poolId` must be activated before deposits are allowed.
* Activation can be done by Yelay or by the client using the method below.
* Only a whitelisted operator address can perform this action.
* To whitelist an address, provide your operator address to the Yelay team.
```typescript
const poolToActivate = minPool + 5; // should be in range: minPool <= poolToActivate <= maxPool
const isPoolActive = await sdk.data.isPoolActive(vault, poolToActivate);
if (!isPoolActive) {
await sdk.actions.activatePool(vault, poolToActivate);
}
```
#### Migrate user deposits between pools
This method allows withdrawing a user’s liquidity from Pool A and depositing it into Pool B (both operated by the same client) in a single transaction:
```typescript
const vault = '0x1234';
const fromPool = 123;
const toPool = 456;
const amount = 1000000n; // Amount of shares to migrate
const migrateTx = await sdk.actions.migrate(vault, fromPool, toPool, amount);
```
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