> ## Documentation Index
> Fetch the complete documentation index at: https://docs.meteora.ag/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

Before getting started building on DLMM, you should read the following resource to get a better understanding of how Meteora's DLMM works:

<CardGroup cols={2}>
  <Card title="What's DLMM?" icon="code" iconType="solid" href="/overview/products/dlmm/what-is-dlmm">
    DLMM is one of Meteora's highly sophisticated product that allows you to provide concentrated liquidity to a pool and earn dynamic fees that increases or decreases based on the market volatility.
  </Card>

  <Card title="Token 2022 Extensions" icon="puzzle" iconType="solid" href="/overview/products/dlmm/token-2022-extensions">
    DLMM supports Token 2022 tokens with a variety of extensions, enabling tokens with enhanced functionality to be easily integrated into DLMM pools. Check out the list of extensions that DLMM supports here.
  </Card>
</CardGroup>

***

# DLMM Program

At Meteora, we’ve developed a `Node.js <> Typescript SDK` and `Rust CPI Examples` to make deploying and managing your DLMM liquidity pool easier. The following sections includes information on installing and using the SDKs and Rust CPIs. It also covers where to find the latest code, and how to contribute to these repositories.

We also outline a list of unofficial community SDKs made by our wonderful community.

## Program Details

<CardGroup cols={1}>
  <Card title="DLMM IDL" icon="code" iconType="solid" href="https://github.com/MeteoraAg/dlmm-sdk/blob/main/idls/dlmm.json">
    Meteora DLMM Program IDL
  </Card>
</CardGroup>

<div className="overflow-x-auto">
  <table className="w-full border-collapse">
    <thead>
      <tr className="border-b border-gray-300 dark:border-gray-600">
        <th className="text-left py-3 px-4 font-semibold text-gray-900 dark:text-gray-100">Network</th>
        <th className="text-left py-3 px-4 font-semibold text-gray-900 dark:text-gray-100">Program ID</th>
      </tr>
    </thead>

    <tbody>
      <tr className="border-b border-gray-200 dark:border-gray-700 hover:bg-gray-50 dark:hover:bg-gray-800">
        <td className="py-3 px-4"><strong className="text-gray-900 dark:text-gray-100">Mainnet</strong></td>
        <td className="py-3 px-4"><code className="bg-gray-100 dark:bg-gray-800 px-2 py-1 rounded text-sm font-mono">LBUZKhRxPF3XUpBCjp4YzTKgLccjZhTSDM9YuVaPwxo</code></td>
      </tr>

      <tr className="border-b border-gray-200 dark:border-gray-700 hover:bg-gray-50 dark:hover:bg-gray-800">
        <td className="py-3 px-4"><strong className="text-gray-900 dark:text-gray-100">Devnet</strong></td>
        <td className="py-3 px-4"><code className="bg-gray-100 dark:bg-gray-800 px-2 py-1 rounded text-sm font-mono">LBUZKhRxPF3XUpBCjp4YzTKgLccjZhTSDM9YuVaPwxo</code></td>
      </tr>
    </tbody>
  </table>
</div>

## Pool Types

DLMM supports four pool types:

| Pool Type                    | Description                                                                                                                           |
| ---------------------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| `Permissionless`             | Standard open pool, no special requirements.                                                                                          |
| `PermissionlessV2`           | Latest pool type with Token 2022 support, extended config parameters, and `function_type` setting. Created via `initialize_lb_pair2`. |
| `Permission`                 | Admin-controlled pool for token launches with activation point, pre-activation duration, and lock duration settings.                  |
| `CustomizablePermissionless` | Open pool with creator-controlled on/off switch, customizable base fee, activation point, and Alpha Vault support.                    |

<Note>`PermissionlessV2` pools no longer enforce SOL/USDC quote token constraints — any token pair is supported.</Note>

## Function Type

When creating a `PermissionlessV2` pool, a `function_type` parameter is required:

| Function Type         | Description                                            |
| --------------------- | ------------------------------------------------------ |
| `LiquidityMining` (0) | Pool supports farming rewards via `initialize_reward`. |

<Warning>The `initialize_reward` instruction only works on pools with `function_type = LiquidityMining`. Pools created without this function type cannot have farming rewards added later.</Warning>

## Dynamic Positions

DLMM supports `PositionV2`, which supports up to **1,400 bins** per position — a significant increase from the previous 70-bin limit. This is achieved through extended byte data attached to the position account, which is allocated on demand as the position grows.

### Position Resize

Positions can be resized dynamically without closing and reopening:

| Instruction                                              | Description                                      |
| -------------------------------------------------------- | ------------------------------------------------ |
| `increase_position_length` / `increase_position_length2` | Expand the position's bin range.                 |
| `decrease_position_length`                               | Shrink the position from the lower or upper end. |

### Rebalance Liquidity

The `rebalance_liquidity` instruction allows position owners to combine multiple liquidity operations (add, remove, shift) and resize the position in a single instruction.

It supports a `shrink_mode` parameter:

| Shrink Mode     | Description                                |
| --------------- | ------------------------------------------ |
| `ShrinkBoth`    | Shrink empty bins on both sides.           |
| `NoShrinkLeft`  | Keep left (lower) bins, shrink right only. |
| `NoShrinkRight` | Keep right (upper) bins, shrink left only. |
| `NoShrinkBoth`  | Do not shrink on either side.              |

### Additional Position Instructions

| Instruction               | Description                                                                |
| ------------------------- | -------------------------------------------------------------------------- |
| `initialize_position2`    | Creates a position, succeeding silently if it already exists (idempotent). |
| `close_position_if_empty` | Closes a position only if it has no liquidity; otherwise does nothing.     |
| `migrate_position`        | Migrates a v1 position to v2 format.                                       |

## Bin Array Initialization

<Warning>
  **Breaking change:** The `initialize_bin_array` instruction now sets all bin prices during initialization and consumes approximately **250,000 compute units**. Integrations should allocate additional CU for this instruction. The instruction is idempotent — re-initializing an existing bin array does not return an error.
</Warning>

## Token 2022 Support

DLMM supports Token 2022 tokens with the following permissionless extensions:

* `TransferFeeConfig` / `TransferFeeAmount`
* `TokenMetadata` / `MetadataPointer`
* `ConfidentialTransferMint` / `ConfidentialTransferFeeConfig`

Extensions like `PermanentDelegate`, `TransferHook`, and `MintCloseAuthority` require a **Token Badge** to be initialized by the program admin before they can be used in DLMM pools.

<Note>Transfer hook mints are supported permissionlessly if both the transfer hook program and transfer hook authority have been revoked.</Note>

## Official SDKs

<CardGroup cols={2}>
  <Card title="Typescript SDK" icon="node-js" iconType="solid" href="/developer-guide/guides/dlmm/typescript-sdk/getting-started">
    Official Meteora DLMM Typescript SDK
  </Card>

  <Card title="Rust CPI Examples" icon="rust" iconType="solid" href="/developer-guide/guides/dlmm/cpi/examples">
    Official Meteora DLMM Rust CPI Examples
  </Card>
</CardGroup>

## Community SDKs

<Note>
  These SDKs are not officially maintained by our team — only the `Node.js <> Typescript SDK` and `Rust CPI Examples` are.
</Note>

<CardGroup cols={1}>
  <Card title="Python SDK" icon="python" iconType="solid" href="https://github.com/MeteoraAg/dlmm-sdk/tree/main/python-client/dlmm">
    Unofficial Python SDK for DLMM built by the community
  </Card>
</CardGroup>