# Omnimcp

> Arcade's Omni MCP server — dynamic tool discovery and execution (Slack, GitHub, Gmail, Calendar, Notion, Linear, and more).

- **Type:** MCP server
- **Install:** `agentstack add mcp-arcadeai-labs-omnimcp`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [arcadeai-labs](https://agentstack.voostack.com/s/arcadeai-labs)
- **Installs:** 0
- **Category:** [Developer Tools](https://agentstack.voostack.com/c/developer-tools)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [arcadeai-labs](https://github.com/arcadeai-labs)
- **Source:** https://github.com/arcadeai-labs/omnimcp
- **Website:** https://omni.arcade.dev

## Install

```sh
agentstack add mcp-arcadeai-labs-omnimcp
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# OmniMCP by Arcade.dev

Give your AI assistant instant access to 500+ everyday tools — Slack, Gmail,
GitHub, Google Calendar, Notion, Linear, Dropbox, and more — over a single
connection. Just ask for what you want; OmniMCP picks the right tool, handles
sign-in, and gets it done.

Endpoint: `https://omni.arcade.dev/mcp`

This repo is one package: a **Cursor plugin**, a **Claude Code / Cowork
plugin**, a **Claude Desktop** connector, and an **OpenCode** MCP server.
One-click installers also live on the splash page —
**[omni.arcade.dev](https://omni.arcade.dev)**.

The first time you connect you sign in with Arcade. After that, each app
(Google, GitHub, Slack, …) prompts a one-time sign-in the first time it's used.
No API keys to paste.

## Cursor

[](https://cursor.com/en/install-mcp?name=arcade&config=eyJ1cmwiOiJodHRwczovL29tbmkuYXJjYWRlLmRldi9tY3AifQ==)

New user — pick one:

- Click **Add to Cursor** above and approve the install, or
- **Cursor Settings → MCP → Add server** and paste `https://omni.arcade.dev/mcp`.

Then open **Settings → MCP**, find **arcade**, and sign in with Arcade.

## Claude Code (CLI)

```bash
/plugin marketplace add arcadeai-labs/omnimcp   # register this repo as a marketplace
/plugin install arcade@arcade                   # install the plugin
/mcp                                            # sign in to the "arcade" server
```

Then just ask in plain language, or use the commands:

- `/arcade:do ` — do something in an app (Slack, Gmail, GitHub, …)
- `/arcade:apps` — see or disconnect your connected apps
- `/arcade:tools ` — preview which tools would run (debugging)

Want only the tools (no commands/skills/subagents)? Add the bare server instead:

```bash
claude mcp add --transport http arcade https://omni.arcade.dev/mcp
```

## Claude in the desktop app (Cowork & Code)

Plugins work in **Cowork** and **Code** (not plain Chat).

1. Open the **Plugins** page → **Add marketplace**.
2. Enter `arcadeai-labs/omnimcp` (or `https://github.com/arcadeai-labs/omnimcp`).
3. **Install** the **arcade** plugin and sign in with Arcade when prompted.

You get the same commands, skills, and subagents as Claude Code.

For plain **Chat** (which doesn't use plugins), connect the server directly:
**Settings → Connectors → Add custom connector** → paste
`https://omni.arcade.dev/mcp` (requires a paid Claude plan). That gives the tools
only — no slash commands. If your version lacks custom connectors, merge
[`clients/claude-desktop/claude_desktop_config.json`](clients/claude-desktop/claude_desktop_config.json)
into your `claude_desktop_config.json` and restart.

## OpenCode

Two ways — the plugin (one install) or a manual MCP-server entry. OAuth is
auto-discovered either way (no keys); run `opencode mcp auth arcade` if it
doesn't prompt automatically.

**Plugin** (`opencode-arcade`) — registers the Arcade MCP server for you and
shows app sign-in links as toasts. Add it to your `opencode.json`:

```json
{
  "$schema": "https://opencode.ai/config.json",
  "plugin": ["opencode-arcade"]
}
```

Source: [`clients/opencode/`](clients/opencode/). Until it's published to npm,
load it locally with `"plugin": ["file:///ABS/PATH/TO/clients/opencode"]`.

**Or add the MCP server directly** — `opencode.json` (project) or
`~/.config/opencode/opencode.json` (global):

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "arcade": { "type": "remote", "url": "https://omni.arcade.dev/mcp", "enabled": true }
  }
}
```

(Ready-made: [`clients/opencode/opencode.json`](clients/opencode/opencode.json).)
Then just ask in plain language.

## Try it

- "Send a Slack message to #eng that the deploy is done."
- "What's on my calendar tomorrow?"
- "Open a GitHub issue in arcadeai-labs/omnimcp titled 'flaky CI'."
- "Summarize my unread email from today."

## What's in this repo

One package, four client targets, sharing the same MCP connection:

| Path | Used by | What it is |
|------|---------|------------|
| `.cursor-plugin/` | Cursor | Plugin + marketplace manifest |
| `.claude-plugin/` | Claude Code | Plugin + marketplace manifest |
| `mcp.json` / `.mcp.json` | Cursor / Claude Code | The Omni MCP server connection |
| `agents/` | Claude Code / Cowork | Subagents that run the discovery loop in isolation |
| `skills/` | Cursor + Claude Code / Cowork | Auto-activating guidance for tool use & apps |
| `commands/` | Claude Code / Cowork | `/arcade:do`, `/arcade:apps`, `/arcade:tools` slash commands |
| `hooks/` | Claude Code / Cowork | Session-start priming |
| `rules/` | Cursor | Tool-discovery rule |
| `clients/claude-desktop/` | Claude Desktop | Ready-to-merge connector config |
| `clients/opencode/` | OpenCode | `opencode-arcade` plugin (npm-style) + MCP server config |

## Links

- Home: https://omni.arcade.dev
- Endpoint: https://omni.arcade.dev/mcp
- Plugin source: https://github.com/arcadeai-labs/omnimcp

## License

[Apache-2.0](LICENSE). Copyright (c) 2024–Present Arcade AI.

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [arcadeai-labs](https://github.com/arcadeai-labs)
- **Source:** [arcadeai-labs/omnimcp](https://github.com/arcadeai-labs/omnimcp)
- **License:** Apache-2.0
- **Homepage:** https://omni.arcade.dev

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-arcadeai-labs-omnimcp
- Seller: https://agentstack.voostack.com/s/arcadeai-labs
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.