Omnimcp

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.

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)

/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:

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/claudedesktopconfig.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:

{
  "$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):

{
  "$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
• Source: arcadeai-labs/omnimcp
• License: Apache-2.0
• Homepage: https://omni.arcade.dev

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