{
  "name": "create_session",
  "wireName": "create_session",
  "source": {
    "repo": "tmux-python/libtmux-mcp",
    "revision": "4daddc0dfca96c43bf521d818bf91564e1434760",
    "extractedRevision": "4daddc0dfca96c43bf521d818bf91564e1434760",
    "file": "src/libtmux_mcp/tools/server_tools.py",
    "line": 372
  },
  "description": "Create a new tmux session.\n\nCheck list_sessions first to avoid name conflicts. A new session\nstarts with one window and one pane. Values in ``environment`` are stored\nin the tmux session environment, so future panes inherit them too.",
  "schemaStatus": "runtime",
  "inputSchema": {
    "additionalProperties": false,
    "properties": {
      "environment": {
        "anyOf": [
          {
            "additionalProperties": {
              "type": "string"
            },
            "type": "object"
          },
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Environment variables to store in the session environment. Accepts\neither a dict of env vars or a JSON-serialized string of the same —\nthe latter is the cursor-composer-1 workaround described in\n:func:`libtmux_mcp._utils._coerce_dict_arg`. Each item appears in the\ntmux client argv as one ``-eKEY=VALUE`` element and may be visible to\nhost process inspection during launch. tmux retains the values in\ntmux session state, where ``show-environment`` can reveal them. They reach\nthe initial and future child environments unless a later spawn\noverrides them. MCP audit redaction does not hide these surfaces. Pass\ncredential references, not literal credentials."
      },
      "session_name": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Name for the new session."
      },
      "socket_name": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "tmux socket name. Defaults to LIBTMUX_SOCKET env var."
      },
      "start_directory": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Existing directory to start in. ``~`` expands; a relative path\nresolves against the MCP server process's directory."
      },
      "suppress_persistent_history": {
        "default": false,
        "description": "Whether to suppress persistent history for the spawned shell. Defaults\nto False for MCP and direct Python calls. This per-call option does not\ninherit LIBTMUX_SUPPRESS_HISTORY. Startup files may override these\ncontrols.",
        "type": "boolean"
      },
      "window_name": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Name for the initial window."
      },
      "x": {
        "anyOf": [
          {
            "type": "integer"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Width of the initial window."
      },
      "y": {
        "anyOf": [
          {
            "type": "integer"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Height of the initial window."
      }
    },
    "type": "object"
  },
  "outputSchema": {
    "description": "Serialized tmux session.",
    "properties": {
      "active_pane_id": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Pane id (``%N``) of the session's active pane. Guaranteed non-None on ``create_session`` return (libtmux creates the session with one initial pane). May be None from ``list_sessions`` rows for sessions in transient teardown states where ``active_pane`` is unavailable."
      },
      "session_attached": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Attached client count"
      },
      "session_created": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Creation timestamp"
      },
      "session_id": {
        "description": "Session ID (e.g. '$1')",
        "type": "string"
      },
      "session_name": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ],
        "default": null,
        "description": "Session name"
      },
      "window_count": {
        "description": "Number of windows",
        "type": "integer"
      }
    },
    "required": [
      "session_id",
      "window_count"
    ],
    "type": "object"
  },
  "annotations": {
    "destructiveHint": true,
    "idempotentHint": false,
    "openWorldHint": true,
    "readOnlyHint": false
  },
  "meta": {
    "fastmcp": {
      "tags": [
        "execute"
      ]
    }
  }
}