{
  "name": "capture_pane",
  "wireName": "capture_pane",
  "source": {
    "repo": "tmux-python/libtmux-mcp",
    "revision": "4daddc0dfca96c43bf521d818bf91564e1434760",
    "extractedRevision": "4daddc0dfca96c43bf521d818bf91564e1434760",
    "file": "src/libtmux_mcp/tools/pane_tools/__init__.py",
    "line": 101
  },
  "description": "Capture the visible contents of a tmux pane (terminal scrollback).\n\nUse for tmux pane output — 'capture the build log', 'what did the\nserver print' — not editor file contents. The tool for reading what\nis displayed in a terminal; use search_panes to search across\nmultiple panes at once.\n\nOutput is tail-preserved: when the capture exceeds ``max_lines``\nthe oldest lines are dropped and the returned string is prefixed\nwith a single ``[... truncated K lines ...]`` header line so the\nagent can tell truncation occurred and re-request with a narrower\n``start``/``end`` window or a larger ``max_lines`` if needed. Pass\n``max_lines=None`` to disable truncation entirely.",
  "schemaStatus": "runtime",
  "inputSchema": {
    "additionalProperties": false,
    "properties": {
      "end": {
        "anyOf": [
          {
            "type": "integer"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "End line number."
      },
      "max_lines": {
        "anyOf": [
          {
            "type": "integer"
          },
          {
            "type": "null"
          }
        ],
        "default": 500,
        "description": "Maximum number of lines to return. Defaults to\n``CAPTURE_DEFAULT_MAX_LINES``. Pass ``None`` to return the\nfull capture with no truncation."
      },
      "pane_id": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Pane ID (e.g. '%1')."
      },
      "session_id": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Session ID (e.g. '$1') for pane resolution."
      },
      "session_name": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Session name for pane resolution."
      },
      "socket_name": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "tmux socket name."
      },
      "start": {
        "anyOf": [
          {
            "type": "integer"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Start line number. 0 is the first visible line. Negative values\nreach into scrollback history (e.g. -100 for last 100 lines)."
      },
      "window_id": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Window ID for pane resolution."
      }
    },
    "type": "object"
  },
  "annotations": {
    "destructiveHint": true,
    "idempotentHint": false,
    "openWorldHint": true,
    "readOnlyHint": false
  },
  "meta": {
    "fastmcp": {
      "tags": [
        "inspect"
      ]
    }
  }
}