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 that works as a Cursor plugin, a Claude Code
plugin, and a Claude Desktop connector. The quickest one-click installers
also live on the splash page — omni.arcade.dev.

Cursor

Or install the plugin from the Cursor Marketplace, or add the server manually:
Cursor Settings → MCP → Add server, then use the endpoint above.

Claude Code

Install the plugin to get the operator subagent, skills, and slash commands:

/plugin marketplace add arcadeai-labs/omnimcp
/plugin install omnimcp
/mcp        # authenticate "omnimcp" with Arcade

Or just add the bare connection (no subagents/commands):

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

Once installed, try /omni summarize my unread email, or just ask in plain
language — the omni-operator subagent kicks in automatically.

Claude Desktop

Settings → Connectors → Add custom connector, then paste the endpoint above.
(Requires a paid Claude plan.)

No connector support on your version? Use the config in
clients/claude-desktop/claude_desktop_config.json
— merge its mcpServers entry into your claude_desktop_config.json and
restart Claude Desktop.

Signing in

The first time you connect, you'll sign in with Arcade. After that, whenever a
tool needs one of your accounts (Google, GitHub, Slack, …), you'll get a
one-time link to connect it — approve it once and you're set. No API keys to
paste.

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	Subagents that run the discovery loop in isolation
`skills/`	Cursor + Claude Code	Auto-activating guidance for tool use & auth
`commands/`	Claude Code	`/omni`, `/omni-tools`, `/omni-auth` slash commands
`hooks/`	Claude Code	Session-start priming + auth-link surfacing
`rules/`	Cursor	Tool-discovery rule
`clients/claude-desktop/`	Claude Desktop	Ready-to-merge connector config

omnimcp