# get_session_info

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

> Return metadata for one session. Inspect tmux metadata; accepts no client-supplied executable input.

MCP is in development

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

Return metadata for one session. Inspect tmux metadata; accepts no client-supplied executable input.

[All Rust tools](https://libtmux.org/en/rs/latest/mcp/tools/) · [JSON](https://libtmux.org/en/rs/latest/mcp/tools/get_session_info.json) · [Source](https://github.com/libtmux/libtmux-rs/blob/2cef1aa642182dd1970c3688feb6a568ff666e64/crates/tmux-mcp/src/tools/contract.rs#L555)

## Arguments

* `session` required · string

  The session, by \`$\`-prefixed id as \`list_sessions\` reports it, or by name.

## Schemas

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

Input schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "properties": {
    "session": {
      "description": "The session, by `$`-prefixed id as `list_sessions` reports it, or by\nname.",
      "type": "string"
    }
  },
  "required": [
    "session"
  ],
  "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": true,
  "openWorldHint": false,
  "readOnlyHint": true,
  "title": "Get Session Info"
}
```