---
title: Composio notifier
description: Route notifications through the Composio toolkit — Slack, Discord, or Gmail.
---

<div style={{ display: "flex", alignItems: "center", gap: "0.75rem", margin: "0.5rem 0 1.25rem" }}>
  <Logo name="composio" size={28} />
  <span style={{ fontSize: "0.8125rem", color: "var(--color-fd-muted-foreground)" }}>Slot: <code>notifier</code> · Name: <code>composio</code></span>
</div>

<PlatformSupport macos="full" linux="full" windows="full" />

Uses the [Composio toolkit](https://composio.dev) to deliver notifications. Handy when you already have Composio set up for other agent tooling — a single credential covers Slack, Discord, and Gmail.

## Setup

Install the Composio core package alongside AO:

```bash
npm install -g composio-core
```

Export your Composio API key:

```bash
export COMPOSIO_API_KEY=cp_...
```

## Use

```yaml title="agent-orchestrator.yaml"
notifier:
  - type: composio
    defaultApp: slack             # slack | discord | gmail
    channelName: "#agents"        # Slack / Discord
    channelId: "..."              # optional, used if channelName is ambiguous
    emailTo: alerts@example.com   # required when defaultApp=gmail
    composioApiKey: ${CUSTOM}     # optional override; otherwise uses env
```

## Config

| Key | Required | Default | What it does |
|---|---|---|---|
| `defaultApp` | ✓ | `slack` | Which Composio app to target: `slack`, `discord`, or `gmail` |
| `channelName` | for Slack/Discord | — | Channel name (Composio resolves it) |
| `channelId` | optional | — | Explicit channel id when the name is ambiguous |
| `emailTo` | ✓ when `gmail` | — | Recipient address |
| `composioApiKey` | optional | env `COMPOSIO_API_KEY` | Override the API key from config |

## When to use

- Your org already has Composio set up.
- You want to route notifications to Gmail as a fallback for people who don't live in Slack/Discord.
- You'd rather manage one Composio credential than three webhook URLs.