withoneai/mcp

One MCP Server

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Connect your AI agents to 1000+ apps through a single MCP server. Find the actions a task needs with their documentation, and execute API calls across platforms, without having to manage OAuth tokens or API keys.

npm install -g @withone/cli
one init

That’s it. The One CLI will prompt you for your API key (get one from the One dashboard) and configure the MCP server for your environment: Claude Desktop, Cursor, Claude Code, Windsurf, or any MCP-compatible agent.

Capabilities

• 1000+ platforms. Gmail, Slack, Shopify, HubSpot, Stripe, Linear, QuickBooks, and more.
• Natural language execution. “read my last gmail email”, “send a message to #general on Slack”
• Code generation. “build a form to send emails using Gmail”, “create a dashboard that lists my Linear projects”
• No tool bloat. Only 3 tools exposed regardless of how many platforms or actions you connect. One call finds every action a task needs, across platforms, with its documentation, so your agent’s context window stays clean.
• Fine-grained access control. Restrict which actions, connections, and permission levels (read, write, admin) your agent has access to.
• Secure by default. All requests proxied through One, secrets automatically redacted, no platform API keys to manage.

Examples

Execute actions directly:

“Get my last 5 emails from Gmail”

“Send a Slack message to #general: ‘Meeting in 10 minutes’”

“Get all products from my Shopify store”

Generate integration code:

“Create a React form component that sends emails using Gmail”

“Build a dashboard that displays Linear users and their assigned projects with filtering”

“Create a paginatable table that fetches and displays QuickBooks invoices with search and sort”

Tools

The server exposes three MCP tools: