> For the complete documentation index, see [llms.txt](https://docs.syncswap.xyz/syncswap-technical-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.syncswap.xyz/syncswap-technical-docs/pool-master.md).

# Pool Master

The pool master contract is the registry and entrance of all liquidity pools.

The SyncSwap Pool Master contract is a central component in the SyncSwap ecosystem, designed to manage swap fees, whitelist factories, oversee protocol fees, and maintain a registry of pools. This contract provides a unified interface for querying and managing fees across different pool types and serves as a unique registry for all pools within the SyncSwap network.

**Features:**

1. **Fee Management:**
   * The Pool Master contract interacts with a Fee Manager to handle swap fees and protocol fees.
   * It provides functions to query the swap fee and protocol fee for a specific pool.
2. **Factory Whitelisting:**
   * Only whitelisted factories are allowed to create and register pools.
   * The contract maintains a mapping to track which factories are whitelisted.
3. **Pool Registry:**
   * The contract keeps a registry of all pools, including their configuration and types.
   * Pools are registered by their factory upon creation and are indexed by a hash of their configuration.
4. **Pool Creation and Registration:**
   * Factories can create new pools and register them with the Pool Master.
   * During registration, the contract checks for duplication to ensure each pool is unique.

**Events:**

The contract emits various events to notify about key actions:

* `SetFactoryWhitelisted`: Emitted when a factory's whitelist status is updated.
* `RegisterPool`: Emitted when a new pool is registered.
* `UpdateForwarderRegistry`: Emitted when the forwarder registry is updated.
* `UpdateFeeManager`: Emitted when the fee manager is updated.

**Main Functions:**

* **`setForwarderRegistry(address newForwarderRegistry)`**: Updates the forwarder registry address.
* **`setFeeManager(address newFeeManager)`**: Updates the fee manager address.
* **`setFactoryWhitelisted(address factory, bool whitelisted)`**: Adds or removes a factory from the whitelist.
* **`createPool(address factory, bytes calldata data)`**: Creates a new pool using a whitelisted factory.
* **`registerPool(address pool, uint16 poolType, bytes calldata data, address token0, address token1)`**: Registers a newly created pool.

The SyncSwap Pool Master contract is a critical component that ensures the smooth operation and governance of pools within the SyncSwap ecosystem. It centralizes the management of fees, factory whitelisting, and pool registry, providing a robust and secure infrastructure for liquidity pools.