Outlook MCP | OAuth 2.0 Outlook connector for AI agents

Tools your email agent reaches for on Outlook, scoped per user.

CALL ANY TOOL

List, read, and send Outlook messages, search the mailbox, and navigate folders.

outlook_accept_event

Accept event

Accept a calendar event invitation.

Parameters

Name

Type

Required

Description

event_id

string

Required

Event ID.

comment

string

Optional

Response comment.

schema_version

string

Optional

Schema version

send_response

boolean

Optional

Send response.

tool_version

string

Optional

Tool version

outlook_add_event_attachment

Add event attachment

outlook_batch_update_messages

Batch update messages

outlook_cancel_event

Cancel event

outlook_copy_message

Copy message

outlook_create_calendar

Create calendar

outlook_create_category

Create category

outlook_create_draft_message

Create draft message

outlook_create_message_rule

Create message rule

outlook_create_upload_session

Create upload session

outlook_delete_calendar

Delete calendar

outlook_delete_category

Delete category

outlook_delete_mail_folder

Delete mail folder

outlook_delete_shared_calendar_event

Delete shared calendar event

outlook_forward_message

Forward message

outlook_get_attachment

Get attachment

outlook_get_calendar_view

Get calendar view

outlook_get_event_attachment

Get event attachment

outlook_get_message_rule

Get message rule

outlook_get_user_presence

Get user presence

outlook_list_attachments

List attachments

outlook_list_child_folders

List child folders

outlook_list_folder_delta

List folder delta

outlook_list_shared_contacts

List shared contacts

outlook_reply_all_message

Reply all message

outlook_search_messages

Search messages

outlook_send_draft_message

Send draft message

outlook_todo_tasks_update

Update todo tasks

outlook_update_calendar_permission

Update calendar permission

outlook_update_focused_inbox_override

Update focused inbox override

For more tools, view docs.

Build your Agent

Drop the toolkit in, point it at the user, and your email agent can use Outlook from the first run.

import { ScalekitClient } from "@scalekit-sdk/node";
import { DynamicStructuredTool } from "@langchain/core/tools";
import { createReactAgent } from "@langchain/langgraph/prebuilt";
import { z } from "zod";

const sk = new ScalekitClient(envUrl, clientId, clientSecret);

const { tools } = await sk.tools.listScopedTools("user_123", {
  filter: { connectionNames: ["outlook"], toolNames: ["outlook_messages_list", "outlook_message_get", "outlook_message_send"] },
  pageSize: 100,
});

const lcTools = tools.map((t) => new DynamicStructuredTool({
  name: t.tool.definition.name,
  description: t.tool.definition.description,
  schema: z.object({}).passthrough(),
  func: async (args) => {
    const { data } = await sk.tools.executeTool({
      toolName: t.tool.definition.name,
      identifier: "user_123",
      params: args,
    });
    return JSON.stringify(data);
  },
}));

const agent = createReactAgent({ llm, tools: lcTools });

import { ScalekitClient } from "@scalekit-sdk/node";
import OpenAI from "openai";

const sk = new ScalekitClient(envUrl, clientId, clientSecret);
const openai = new OpenAI();

const { tools } = await sk.tools.listScopedTools("user_123", {
  filter: { connectionNames: ["outlook"], toolNames: ["outlook_messages_list", "outlook_message_get", "outlook_message_send"] },
  pageSize: 100,
});

const llmTools = tools.map((t) => ({
  type: "function",
  function: {
    name: t.tool.definition.name,
    description: t.tool.definition.description,
    parameters: t.tool.definition.input_schema,
  },
}));

const resp = await openai.responses.create({
  model: "gpt-4o", input: prompt, tools: llmTools,
});

import { ScalekitClient } from "@scalekit-sdk/node";
import Anthropic from "@anthropic-ai/sdk";

const sk = new ScalekitClient(envUrl, clientId, clientSecret);
const anthropic = new Anthropic();

const { tools } = await sk.tools.listScopedTools("user_123", {
  filter: { connectionNames: ["outlook"], toolNames: ["outlook_messages_list", "outlook_message_get", "outlook_message_send"] },
  pageSize: 100,
});

const llmTools = tools.map((t) => ({
  name: t.tool.definition.name,
  description: t.tool.definition.description,
  input_schema: t.tool.definition.input_schema,
}));

const msg = await anthropic.messages.create({
  model: "claude-sonnet-4-6", max_tokens: 1024,
  tools: llmTools,
  messages: [{ role: "user", content: prompt }],
});

import { Agent } from "@google/adk/agents";
import {
  MCPToolset, StreamableHTTPConnectionParams,
} from "@google/adk/tools/mcp";

const toolset = new MCPToolset({
  connectionParams: new StreamableHTTPConnectionParams({
    url: "https://mcp.scalekit.com/outlook",
    headers: { Authorization: `Bearer ${userScopedToken}` },
  }),
});

const agent = new Agent({
  name: "agent", model: "gemini-2.0-flash",
  tools: await toolset.getTools(),
});

Try these prompts

Paste any prompt into your agent to start using Outlook.

Search & recall

Copy the prompt

Copied

Find all unread emails from [domain] this week.

Copy the prompt

Copied

Search inbox for [keyword].

Copy the prompt

Copied

List emails from [sender] this month.

Copy the prompt

Copied

Find emails with attachments received today.

Action & replies

Copy the prompt

Copied

Send an email to [address]: [subject] — [body].

Copy the prompt

Copied

Reply to the latest email from [person].

Copy the prompt

Copied

Forward [email] to [address].

Copy the prompt

Copied

Mark all emails from [sender] as read.

Triage & organization

Copy the prompt

Copied

List all folders in my mailbox.

Copy the prompt

Copied

Find emails that need a reply older than 2 days.

Copy the prompt

Copied

Summarize unread emails from enterprise customers.

Copy the prompt

Copied

List emails with invoice or billing in the subject.

SEE HOW AUTH WORKS

Users authorize Outlook once. Their credentials stay vaulted, every call is checked, and every action is logged.

Authorize

Your user connects

Outlook

once. We tie it to their identity and the meetings they approved — no shared bot account, no org-wide access

Who:

user ‘A’

when:

Once per user

access:

Limited to user

Store

Their

Outlook

token lives in a vault scoped to them. User A's meetings are never reachable by an agent acting for user B, even on the same connection

vault:

encrypted

scope:

per-user

tokens:

auto-refreshed

Resolve

When your agent calls a

Outlook

tool, we fetch the right token server-side. It never touches your agent, never appears in the LLM context, never shows up in your logs

speed:

~40ms

check:

before every call

seen by:

nobody

Audit

Every

Outlook

tool call is logged — who triggered it, which meeting was fetched, what came back. 90 days of history, tied to the user who authorized it

history:

90 days

export:

SIEM-ready

logged:

every call

Test other agents

Same per-user auth pattern across other email agents and MCP connectors. Working code, live demos, fork what fits.

Support and Ops Teams

Email-to-calendar agent

Reads scheduling intent out of Gmail threads, resolves the times everyone actually has free, and creates the event on the user's own Google Calendar. No shared service account.

Gmail

Google Calendar

View agent

GTM and RevOps Teams

Deal intelligence agent

Pulls recent Gong calls, scores deal risk with an LLM, cross-references the record in Attio, and DMs each owner their at-risk deals in Slack. Every read is scoped to that rep's own access.

GTM and RevOps Teams

CRM AI agent

Reads the Granola transcript after every call, extracts next steps and updates the HubSpot record, drafts the follow-up in Gmail, and confirms in Slack, all on the rep's own delegated OAuth.

GTM and RevOps Teams

Outbound prospecting agent

Searches Apollo for prospects matching your ICP, scores and ranks them, drafts personalized outreach in Gmail, and logs every send to Google Sheets. Mail goes out as the rep, not from a shared inbox.

Why Scalekit

Secure your agent's access. Connectors ship in minutes

01.

Shared tokens break per-user analytics

A shared token looks fine in a demo. In production every call looks like a service account. Scalekit resolves the real user credential so attribution, audit, and scope stay accurate.

// shared token
 audit → bot_service_account
 user_filter → broken

 // scalekit
 audit → user_abc
 scope → enforced ✓

02.

Authentication is not authorization

03.

Multi-tenancy is architectural

04.

Outlook today. Others tomorrow.

“Our agents act across Salesforce, Gong, Google Drive, and more, on behalf of every customer. Scalekit behind the scenes meant we can keep adding tools without ever rebuilding how credentials or tool calling work.”

Venu Madhav Kattagoni

Head of Engineering / Von

FAQs

Frequently Asked Questions

Does the agent access Outlook as the user or as a shared key?

As the user. Each workspace member authorizes once and Scalekit resolves their credential at request time. Audit logs attribute every action to that user, not a shared service account.

Where is the Outlook oauth 2.0 stored?

In Scalekit's managed AES-256 token vault, namespaced per tenant. Refresh is automatic. Revocation is a single dashboard action. Tokens never appear in prompts, logs, or LLM context.

Can I limit what the agent is allowed to do in Outlook?

Yes. Pass a tool name filter to listScopedTools so the email agent only sees the subset you authorize. Pre-API-call scope checks block out-of-policy actions before the request reaches Outlook.

What happens when a user revokes Outlook access?

The connection is invalidated on the next tool call. Subsequent requests for that user fail closed with a clear error. Other users in the tenant remain unaffected. The event is logged for audit.

Does a sent email from the agent appear as sent by the user or as a bot?

As the user. Emails send from the authorizing user's Outlook address with proper From and Reply-To. Audit logs in Microsoft 365 attribute the send to that user, not a service account or bot.

On this page

Tool and actions Framework Compatibility Starter Prompt Auth Lifecycle Try Other Agents Why Scalekit