# create_session

Source: https://libtmux.org/en/rs/latest/mcp/tools/create_session/

> Create a new detached tmux session. Start a pane's configured process; accepts no command payload.

MCP is in development

Server behavior and tool contracts may change. Tool availability depends on the server configuration.

Create a new detached tmux session. Start a pane’s configured process; accepts no command payload.

[All Rust tools](https://libtmux.org/en/rs/latest/mcp/tools/) · [JSON](https://libtmux.org/en/rs/latest/mcp/tools/create_session.json) · [Source](https://github.com/libtmux/libtmux-rs/blob/2cef1aa642182dd1970c3688feb6a568ff666e64/crates/tmux-mcp/src/tools/control.rs#L249)

## Arguments

* `name` required · string

  The name for the new session. It must not already exist.

* `start_directory` optional · string | null

  The first window's working directory. Omit for the directory this MCP server started in.

## Schemas

The schema defines required fields, nested values, defaults, and validation constraints.

Input schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "properties": {
    "name": {
      "description": "The name for the new session. It must not already exist.",
      "type": "string"
    },
    "start_directory": {
      "description": "The first window's working directory. Omit for the directory this MCP\nserver started in.",
      "type": [
        "string",
        "null"
      ]
    }
  },
  "required": [
    "name"
  ],
  "type": "object"
}
```

Output schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "attached": {
      "description": "Whether any client is attached.",
      "type": "boolean"
    },
    "id": {
      "description": "The `$`-prefixed tmux identity.",
      "type": "string"
    },
    "name": {
      "description": "The session name, absent when tmux reported none.",
      "type": "string"
    },
    "windows": {
      "description": "How many windows the session holds.",
      "minimum": 0,
      "type": "integer"
    }
  },
  "required": [
    "id",
    "name",
    "windows",
    "attached"
  ],
  "type": "object"
}
```

Tool annotations

```json
{
  "destructiveHint": false,
  "idempotentHint": false,
  "openWorldHint": true,
  "readOnlyHint": false,
  "title": "Create Session"
}
```