How to integrate Outline MCP with Mastra AI

Connect Mastra AI to Outline MCP. Summarize latest engineering design documents, create onboarding page for new hires, and more using natural language, with authentication handled for you.

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Outline

Api Key

Outline is a team knowledge base and wiki for creating, organizing, and sharing documentation. It helps teams keep decisions, guides, and project knowledge easy to find.

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Introduction

This guide walks you through connecting Outline to Mastra AI using the Composio tool router. By the end, you'll have a working Outline agent that can summarize latest engineering design documents, create onboarding page for new hires, find outdated api documentation pages through natural language commands.

This guide will help you understand how to give your Mastra AI agent real control over a Outline account through Composio's Outline MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

Also integrate Outline with

OpenAI Agents SDK Claude Agent SDK Claude Code Claude Cowork Codex OpenClaw Hermes CLI Google ADK LangChain Vercel AI SDK LlamaIndex CrewAI

TL;DR

Here's what you'll learn:

Set up your environment so Mastra, OpenAI, and Composio work together
Create a Tool Router session in Composio that exposes Outline tools
Connect Mastra's MCP client to the Composio generated MCP URL
Fetch Outline tool definitions and attach them as a toolset
Build a Mastra agent that can reason, call tools, and return structured results
Run an interactive CLI where you can chat with your Outline agent

What is Mastra AI?

Mastra AI is a TypeScript framework for building AI agents with tool support. It provides a clean API for creating agents that can use external services through MCP.

Key features include:

MCP Client: Built-in support for Model Context Protocol servers
Toolsets: Organize tools into logical groups
Step Callbacks: Monitor and debug agent execution
OpenAI Integration: Works with OpenAI models via @ai-sdk/openai

What is the Outline MCP server, and what's possible with it?

The Outline MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Outline account. It provides structured and secure access so your agent can perform Outline operations on your behalf.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step09 STEPS

Prerequisites

Before starting, make sure you have:

Node.js 18 or higher
A Composio account with an active API key
An OpenAI API key
Basic familiarity with TypeScript

Getting API Keys for OpenAI and Composio

OpenAI API Key

Go to the OpenAI dashboard and create an API key.
You need credits or a connected billing setup to use the models.
Store the key somewhere safe.

Composio API Key

Log in to the Composio dashboard.
Go to Settings and copy your API key.
This key lets your Mastra agent talk to Composio and reach Outline through MCP.

Install dependencies

bash

npm install @composio/core @mastra/core @mastra/mcp @ai-sdk/openai dotenv

Install the required packages.

What's happening:

@composio/core is the Composio SDK for creating MCP sessions
@mastra/core provides the Agent class
@mastra/mcp is Mastra's MCP client
@ai-sdk/openai is the model wrapper for OpenAI
dotenv loads environment variables from .env

Set up environment variables

bash

COMPOSIO_API_KEY=your_composio_api_key_here
COMPOSIO_USER_ID=your_user_id_here
OPENAI_API_KEY=your_openai_api_key_here

Create a .env file in your project root.

What's happening:

COMPOSIO_API_KEY authenticates your requests to Composio
COMPOSIO_USER_ID tells Composio which user this session belongs to
OPENAI_API_KEY lets the Mastra agent call OpenAI models

Import libraries and validate environment

typescript

import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Agent } from "@mastra/core/agent";
import { MCPClient } from "@mastra/mcp";
import { Composio } from "@composio/core";
import * as readline from "readline";

import type { AiMessageType } from "@mastra/core/agent";

const openaiAPIKey = process.env.OPENAI_API_KEY;
const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!openaiAPIKey) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({
  apiKey: composioAPIKey as string,
});

What's happening:

dotenv/config auto loads your .env so process.env.* is available
openai gives you a Mastra compatible model wrapper
Agent is the Mastra agent that will call tools and produce answers
MCPClient connects Mastra to your Composio MCP server
Composio is used to create a Tool Router session

Create a Tool Router session for Outline

typescript

async function main() {
  const session = await composio.create(
    composioUserID as string,
    {
      toolkits: ["outline"],
    },
  );

  const composioMCPUrl = session.mcp.url;
  console.log("Outline MCP URL:", composioMCPUrl);

What's happening:

create spins up a short-lived MCP HTTP endpoint for this user
The toolkits array contains "outline" for Outline access
session.mcp.url is the MCP URL that Mastra's MCPClient will connect to

Configure Mastra MCP client and fetch tools

typescript

const mcpClient = new MCPClient({
    id: composioUserID as string,
    servers: {
      nasdaq: {
        url: new URL(composioMCPUrl),
        requestInit: {
          headers: session.mcp.headers,
        },
      },
    },
    timeout: 30_000,
  });

console.log("Fetching MCP tools from Composio...");
const composioTools = await mcpClient.getTools();
console.log("Number of tools:", Object.keys(composioTools).length);

What's happening:

MCPClient takes an id for this client and a list of MCP servers
The headers property includes the x-api-key for authentication
getTools fetches the tool definitions exposed by the Outline toolkit

Create the Mastra agent

typescript

const agent = new Agent({
    name: "outline-mastra-agent",
    instructions: "You are an AI agent with Outline tools via Composio.",
    model: "openai/gpt-5",
  });

What's happening:

Agent is the core Mastra agent
name is just an identifier for logging and debugging
instructions guide the agent to use tools instead of only answering in natural language
model uses openai("gpt-5") to configure the underlying LLM

Set up interactive chat interface

typescript

let messages: AiMessageType[] = [];

console.log("Chat started! Type 'exit' or 'quit' to end.\n");

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  prompt: "> ",
});

rl.prompt();

rl.on("line", async (userInput: string) => {
  const trimmedInput = userInput.trim();

  if (["exit", "quit", "bye"].includes(trimmedInput.toLowerCase())) {
    console.log("\nGoodbye!");
    rl.close();
    process.exit(0);
  }

  if (!trimmedInput) {
    rl.prompt();
    return;
  }

  messages.push({
    id: crypto.randomUUID(),
    role: "user",
    content: trimmedInput,
  });

  console.log("\nAgent is thinking...\n");

  try {
    const response = await agent.generate(messages, {
      toolsets: {
        outline: composioTools,
      },
      maxSteps: 8,
    });

    const { text } = response;

    if (text && text.trim().length > 0) {
      console.log(`Agent: ${text}\n`);
        messages.push({
          id: crypto.randomUUID(),
          role: "assistant",
          content: text,
        });
      }
    } catch (error) {
      console.error("\nError:", error);
    }

    rl.prompt();
  });

  rl.on("close", async () => {
    console.log("\nSession ended.");
    await mcpClient.disconnect();
    process.exit(0);
  });
}

main().catch((err) => {
  console.error("Fatal error:", err);
  process.exit(1);
});

What's happening:

messages keeps the full conversation history in Mastra's expected format
agent.generate runs the agent with conversation history and Outline toolsets
maxSteps limits how many tool calls the agent can take in a single run
onStepFinish is a hook that prints intermediate steps for debugging

Complete Code

Here's the complete code to get you started with Outline and Mastra AI:

typescript

import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Agent } from "@mastra/core/agent";
import { MCPClient } from "@mastra/mcp";
import { Composio } from "@composio/core";
import * as readline from "readline";

import type { AiMessageType } from "@mastra/core/agent";

const openaiAPIKey = process.env.OPENAI_API_KEY;
const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!openaiAPIKey) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({ apiKey: composioAPIKey as string });

async function main() {
  const session = await composio.create(composioUserID as string, {
    toolkits: ["outline"],
  });

  const composioMCPUrl = session.mcp.url;

  const mcpClient = new MCPClient({
    id: composioUserID as string,
    servers: {
      outline: {
        url: new URL(composioMCPUrl),
        requestInit: {
          headers: session.mcp.headers,
        },
      },
    },
    timeout: 30_000,
  });

  const composioTools = await mcpClient.getTools();

  const agent = new Agent({
    name: "outline-mastra-agent",
    instructions: "You are an AI agent with Outline tools via Composio.",
    model: "openai/gpt-5",
  });

  let messages: AiMessageType[] = [];

  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: "> ",
  });

  rl.prompt();

  rl.on("line", async (input: string) => {
    const trimmed = input.trim();
    if (["exit", "quit"].includes(trimmed.toLowerCase())) {
      rl.close();
      return;
    }

    messages.push({ id: crypto.randomUUID(), role: "user", content: trimmed });

    const { text } = await agent.generate(messages, {
      toolsets: { outline: composioTools },
      maxSteps: 8,
    });

    if (text) {
      console.log(`Agent: ${text}\n`);
      messages.push({ id: crypto.randomUUID(), role: "assistant", content: text });
    }

    rl.prompt();
  });

  rl.on("close", async () => {
    await mcpClient.disconnect();
    process.exit(0);
  });
}

main();

Conclusion

You've built a Mastra AI agent that can interact with Outline through Composio's Tool Router. You can extend this further by:

Adding other toolkits like Gmail, Slack, or GitHub
Building a web-based chat interface around this agent
Using multiple MCP endpoints to enable cross-app workflows

TOOLS

Supported Tools

Every Outline action and event your agent gets out of the box.

Activate User

Tool to activate a previously suspended user in Outline.

Add Group to Collection

Tool to add a group to a collection in Outline.

Add Document User

Tool to add a user membership to a document.

Add Group to Document

Tool to give all members in a group access to a document.

Add User to Group

Tool to add a user to a group.

Add User to Collection

Tool to add a user to a collection with specified permissions.

Archive Document

Tool to archive a document in Outline.

Create Attachment

Tool to create an attachment in Outline.

Create Collection

Tool to create a new collection in Outline.

Create Comment

Tool to create a comment on an Outline document.

Create Document

Tool to create a new document in Outline.

Create Group

Tool to create a new group in Outline.

Create OAuth Client

Tool to create a new OAuth client in Outline.

Create Share

Tool to create a public share link for an Outline document.

Create Star

Tool to create a star for a document or collection in Outline.

Create Template

Tool to create a new template in Outline.

Create View

Tool to create a view for a document.

Delete Attachment

Tool to delete an attachment from Outline.

Delete Collection

Tool to delete a collection and all of its documents from Outline.

Delete Comment

Tool to delete a comment in Outline.

Delete Document

Tool to delete a document in Outline.

Delete File Operation

Tool to delete a file operation and its associated files from Outline.

Delete Group

Tool to delete a group from Outline.

Delete OAuth Authentication

Tool to delete an OAuth authentication in Outline.

Delete OAuth Client

Tool to delete an OAuth client from Outline.

Delete Star

Tool to delete a star from a document in Outline.

Delete Template

Tool to delete a template in Outline.

Delete User

Tool to delete a user in Outline.

Duplicate Document

Tool to duplicate an Outline document.

Duplicate Template

Tool to duplicate an Outline template.

Empty Documents Trash

Tool to permanently delete all documents in the trash.

Export All Collections

Tool to export all collections and their documents in bulk.

Export Collection

Tool to export a collection in markdown, JSON, or HTML format.

Export Document

Tool to export a document from Outline in Markdown, HTML, or PDF format.

Get Attachment Redirect URL

Tool to retrieve an attachment redirect URL from Outline.

Get authentication config

Tool to retrieve authentication configuration options for an Outline workspace.

Get Collection Info

Tool to retrieve a collection by its unique identifier.

Get Collection Documents

Tool to retrieve a collection's document structure as a tree of navigation nodes.

Get Comment

Tool to retrieve a comment by its ID from Outline.

Get Document Info

Tool to retrieve a document from Outline by its UUID, urlId, or shareId.

Get Document Children Structure

Tool to retrieve a document's child structure.

Get File Operation Info

Tool to retrieve the details and current status of a file operation by its unique identifier.

Get Group Info

Tool to retrieve a group by its unique identifier.

Get OAuth Client Info

Tool to retrieve an OAuth client from Outline by its id or clientId.

Get Revision Info

Tool to retrieve a revision by its ID from Outline.

Get Share Info

Tool to retrieve a share object by its unique identifier or by the associated document ID.

Get Template Info

Tool to retrieve a template by its unique identifier.

Get User Info

Tool to retrieve a user by their unique identifier.

Invite Users

Tool to invite users to the Outline workspace.

List Archived Documents

List all archived documents in the Outline workspace.

List Collection Group Memberships

Tool to list all group memberships for a specific collection in Outline.

List collection memberships

Tool to list all individual user memberships for a collection.

List Collections

Tool to list all collections that the authenticated user has access to.

List Comments

Tool to retrieve all comments with optional filtering by document or collection.

List Data Attributes

Tool to list all data attributes in Outline.

List Deleted Documents

Tool to list all deleted documents in the workspace that the current user has access to.

List Document Group Memberships

Tool to list a document's group memberships.

List document memberships

Tool to list users with direct membership to a document.

List Documents

Tool to list all documents in your Outline workspace.

List Document Users

Tool to list all users with access to a document.

List Draft Documents

Tool to list all draft documents belonging to the current user.

List Events

Tool to list all events from the audit trail.

List File Operations

Tool to list all file operations for the workspace.

List Group Memberships

Tool to list all members of a specific group in Outline.

List Groups

Tool to list all groups in the workspace.

List OAuth Authentications

Tool to list all OAuth authentications for the current user.

List OAuth Clients

Tool to list all OAuth clients accessible to the authenticated user.

List Recently Viewed Documents

Tool to list all recently viewed documents by the current user.

List Revisions

Tool to list all revisions for a specific document.

List Shares

Tool to list all share links in the workspace.

List Stars

Tool to list all starred documents and collections for the authenticated user.

List Templates

Tool to list all templates available to the current user.

List Users

Tool to list all users in the workspace.

List Views

Tool to list all users that have viewed a specific document and the overall view count.

Move Document

Tool to move a document to a new location or collection in Outline.

Redirect File Operation

Tool to retrieve a file from Outline by file operation ID.

Remove Collection Group

Tool to remove a group from a collection, revoking access for all group members.

Remove Collection User

Tool to remove a user from a collection.

Remove Document User

Tool to remove a user membership from a document.

Remove Group from Document

Tool to remove a group from a document, revoking access for all group members.

Remove Group User

Tool to remove a user from a group.

Restore Document

Tool to restore a document in Outline.

Restore Template

Tool to restore a previously deleted template in Outline.

Retrieve Auth Info

Tool to retrieve authentication details for the current API key.

Revoke Share

Tool to revoke a share in Outline, making the share link inactive so it can no longer be used to access the document.

Rotate OAuth Client Secret

Tool to rotate the secret for an OAuth client in Outline.

Search Documents

Tool to search all documents in your Outline workspace using keywords.

Search Document Titles

Tool to search document titles in Outline workspace using keywords.

Suspend User

Tool to suspend a user in Outline.

Create Template from Document

Tool to create a template from an existing Outline document.

Unpublish Document

Tool to unpublish a document in Outline.

Update Collection

Tool to update an existing collection's properties in Outline.

Update Comment

Tool to update a comment in Outline.

Update Document

Tool to update a document in Outline.

Update Group

Tool to update an existing group's name in Outline.

Update OAuth Client

Tool to update an existing OAuth client in Outline.

Update Share

Tool to update a share in Outline.

Update Star

Tool to update a star's position in the Outline sidebar.

Update Template

Tool to update an existing template in Outline.

Update User

Tool to update a user's name, avatar, or language preference in Outline.

Update User Role

Tool to change a user's role in Outline workspace.

FRAMEWORKS

How to build Outline MCP Agent with another framework

OpenAI Agents SDK

Use Outline MCP with OpenAI Agents SDK

Claude Agent SDK

Use Outline MCP with Claude Agent SDK

Claude Code

Use Outline MCP with Claude Code

Claude Cowork

Use Outline MCP with Claude Cowork

Codex

Use Outline MCP with Codex

OpenClaw

Use Outline MCP with OpenClaw

Hermes

Use Outline MCP with Hermes

CLI

Use Outline MCP with CLI

Google ADK

Use Outline MCP with Google ADK

LangChain

Use Outline MCP with LangChain

Vercel AI SDK

Use Outline MCP with Vercel AI SDK

LlamaIndex

Use Outline MCP with LlamaIndex

CrewAI

Use Outline MCP with CrewAI

MORE TOOLKITS

Explore Other Toolkits

Toolkit marketplace

Google Drive

Oauth2

Google Drive is a cloud storage platform for uploading, sharing, and collaborating on files. It's perfect for keeping your documents accessible and organized across devices.

Google Docs

Oauth2

Google Docs is a cloud-based word processor that enables document creation and real-time collaboration. Its seamless sharing and version history make team editing and content management a breeze.

Google Super

Oauth2Api Key

Google Super is an all-in-one suite combining Gmail, Drive, Calendar, Sheets, Analytics, and more. It gives you a unified platform to manage your digital life, boosting productivity and organization.

Affinda

Api Key

Affinda is an AI-powered document processing platform that automates data extraction from resumes, invoices, and more. It streamlines document-heavy workflows by turning files into structured, actionable data.

FAQ

Frequently asked questions

With a standalone Outline MCP server, the agents and LLMs can only access a fixed set of Outline tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Outline and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Mastra AI fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Outline tools.

Yes, absolutely. You can configure which Outline scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Outline data and credentials are handled as safely as possible.

Start with Outline.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Outline tool your agent needs.Free to start.

Start building

Customer stories

Teams ship real agents on Composio

GET STARTED FOR FREE BOOK A DEMO

Karan skipped his own birthday party to fix our critical issue. It was 10pm and he diverted his Waymo to help us instead. This really sets the bar — it shows the commitment you need when users rely on your software.

Harsha Gaddipati

Co-founder, Slashy

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

Abhi Arya

Co-founder, Opennote

We chose Composio over Pipedream because it delivered depth where it mattered — niche tools and tricky edge cases other platforms simply ignored. That gave us confidence to scale without compromising.

Nirman Dave

CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

Ryan Yu

Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

Tomisin Jenrola

Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Jerome Leclanche

Co-Founder, Ingram Technologies

How to integrate Outline MCP with Mastra AI

Connect Outline without auth hassles

Introduction

Also integrate Outline with

TL;DR

What is Mastra AI?

What is the Outline MCP server, and what's possible with it?

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

How the Composio SDK works

Step-by-step Guide

Prerequisites

Getting API Keys for OpenAI and Composio

Install dependencies

Set up environment variables

Import libraries and validate environment

Create a Tool Router session for Outline

Configure Mastra MCP client and fetch tools

Create the Mastra agent

Set up interactive chat interface

Complete Code

Conclusion

Supported Tools

How to build Outline MCP Agent with another framework

OpenAI Agents SDK

Claude Agent SDK

Claude Code

Claude Cowork

Codex

OpenClaw

Hermes

CLI

Google ADK

LangChain

Vercel AI SDK

LlamaIndex

CrewAI

Explore Other Toolkits

Google Drive

Google Docs

Google Super

Affinda

Frequently asked questions

What are the differences in Tool Router MCP and Outline MCP?+

Can I use Tool Router MCP with Mastra AI?+

Can I manage the permissions and scopes for Outline while using Tool Router?+

How safe is my data with Composio Tool Router?+

Start with Outline.It takes 30 seconds.

Teams ship real agents on Composio