arcade

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, and a Claude Desktop connector. One-click installers also live on the splash page — 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

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)

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

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

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 into your claude_desktop_config.json and restart.

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 plugin, three 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

Links

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

License

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