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Home Assistant icon Microsoft Outlook Calendar icon

MULTI-APP TOOLKIT

Build with Home Assistant + Microsoft Outlook Calendar

Connect a user's Home Assistant and Microsoft Outlook Calendar accounts and expose tools for both apps directly in your product or your agent.
  • Multi-app
  • One MCP session
  • 16 actions
  • 4 triggers
  • Managed auth

MCP

One MCP session, both toolsets

One session gives your product or agent every Home Assistant and Microsoft Outlook Calendar tool at once — connect once, list tools, and call them like any single-app session.

// accessToken: mint a short-lived token with the Connect SDK — see the MCP guide
const transport = new StreamableHTTPClientTransport(
  new URL("https://remote.mcp.pipedream.net/v3"),
  {
    requestInit: {
      headers: {
        Authorization: `Bearer ${accessToken}`,
        "x-pd-project-id": "{project_id}",
        "x-pd-environment": "production",
        "x-pd-external-user-id": "{external_user_id}", // any stable ID for this user in your system
        "x-pd-app-slug": "home_assistant,microsoft_outlook_calendar",
      },
    },
  },
)

const mcp = new Client({ name: "my-agent", version: "1.0.0" })
await mcp.connect(transport)

const { tools } = await mcp.listTools()

// One list, both toolsets: Home Assistant and Microsoft Outlook Calendar tools arrive
// together, each keyed by its own app's slug.

// e.g. run Accept Event:
const result = await mcp.callTool({
  name: "microsoft_outlook_calendar-accept-event",
  arguments: {
    eventId: "Event ID",
    comment: "Comment",
  },
})

ARCHITECTURE

One user, two connected accounts

Your user connects each account once, under whatever ID they already have in your product. The two stay independent — either can be revoked on its own — and your code reaches both through that one user.

Your product

external_user_id

{external_user_id}

Pipedream Connect

Managed identity

Auth · tools · routing

Home Assistant

Connected account

Microsoft Outlook Calendar

Connected account

TOOLS

Home Assistant tools

The Home Assistant tools this pairing puts in reach, each one running on your user's own connected account.

View all 0 Home Assistant tools →

Actions

No Home Assistant actions are available yet.

Triggers

No Home Assistant triggers are available yet.

TOOLS

Microsoft Outlook Calendar tools

The Microsoft Outlook Calendar tools this pairing puts in reach, each one running on your user's own connected account.

View all 20 Microsoft Outlook Calendar tools →

Actions top 8 of 16

Triggers

x-pd-app-slug
home_assistant,microsoft_outlook_calendar
Primary app
Home Assistant (home_assistant)
Second app
Microsoft Outlook Calendar (microsoft_outlook_calendar)
Authentication
API key + OAuth
Available actions
16
Available triggers
4