# signal_channel

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

> Signal a tmux wait-for channel, releasing every current waiter. With no waiter, one signal is latched; signalling the same channel again clears that latch. 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.

Signal a tmux wait-for channel, releasing every current waiter. With no waiter, one signal is latched; signalling the same channel again clears that latch. Change tmux state; 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/signal_channel.json) · [Source](https://github.com/libtmux/libtmux-rs/blob/2cef1aa642182dd1970c3688feb6a568ff666e64/crates/tmux-mcp/src/tools/control.rs#L733)

## Arguments

* `channel` required · string

  The channel name, which is any string both sides agree on.

* `seconds` optional · integer | null

  How long to wait, in seconds. Defaults to 30, capped at 600.

## 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": {
    "channel": {
      "description": "The channel name, which is any string both sides agree on.",
      "type": "string"
    },
    "seconds": {
      "description": "How long to wait, in seconds. Defaults to 30, capped at 600.",
      "minimum": 0,
      "type": [
        "integer",
        "null"
      ]
    }
  },
  "required": [
    "channel"
  ],
  "type": "object"
}
```

Output schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "channel": {
      "description": "The channel that was signalled.",
      "type": "string"
    }
  },
  "required": [
    "channel"
  ],
  "type": "object"
}
```

Tool annotations

```json
{
  "destructiveHint": false,
  "idempotentHint": false,
  "openWorldHint": false,
  "readOnlyHint": false,
  "title": "Signal Channel"
}
```