# set_history_limit

Source: https://libtmux.org/en/java/latest/mcp/tools/set_history_limit/

> Sets a bounded integer scrollback limit for future panes in a session. Change tmux state; no client-supplied executable input.

MCP is in development

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

Sets a bounded integer scrollback limit for future panes in a session. Change tmux state; no client-supplied executable input.

[All Java tools](https://libtmux.org/en/java/latest/mcp/tools/) · [JSON](https://libtmux.org/en/java/latest/mcp/tools/set_history_limit.json) · [Source](https://github.com/libtmux/libtmux-java/blob/f56392b5d9bc7f1f9c1631842333fb90f3d82d40/libtmux-mcp/src/main/java/io/github/libtmux/mcp/ManageTools.java#L198)

## Arguments

* `lines` required · integer

  The nonnegative retained line count.

* `session_id` required · string

  The session ID, such as $1.

## Schemas

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

Input schema

```json
{
  "additionalProperties": false,
  "properties": {
    "lines": {
      "description": "The nonnegative retained line count.",
      "type": "integer"
    },
    "session_id": {
      "description": "The session ID, such as $1.",
      "type": "string"
    }
  },
  "required": [
    "session_id",
    "lines"
  ],
  "type": "object"
}
```

Output schema

```json
{
  "additionalProperties": false,
  "properties": {
    "lines": {
      "type": "integer"
    },
    "session_id": {
      "type": "string"
    }
  },
  "required": [
    "session_id",
    "lines"
  ],
  "type": "object"
}
```

Tool annotations

```json
{
  "destructiveHint": true,
  "idempotentHint": false,
  "openWorldHint": true,
  "readOnlyHint": false,
  "title": "Set history limit"
}
```