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How to connect Linear to Muse

Connect Muse to Linear MCP. Create a new bug for team mobile, add a comment to issue lin-123, and more using natural language, with authentication handled for you.

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Linear is a modern issue tracking and project planning tool for fast-moving teams. It helps streamline workflows, organize projects, and boost productivity.

32 Tools3 Triggers

Introduction

Muse is Meta's AI assistant. It can connect to outside tools through custom connectors, which use the Model Context Protocol (MCP).

This guide explains how to connect Linear to Muse using Composio Connect, which handles OAuth, token refresh, and reliability so you do not have to. You add Composio as a custom connector once, then ask Muse to work with Linear in plain language.

Also integrate Linear with

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Why use Composio?

  • Cross-app workflows across 1,500+ apps from a single plugin layer.
  • On-demand tool loading so Muse only loads the tools needed for the current task.
  • Programmatic tool calling through a remote workbench for complex, multi-step workflows.
  • Multi-account support so users can connect and switch between multiple accounts for the same app.
  • Shared account access so teams or agents can work through common business accounts and service connections.
  • Managed authentication with OAuth handling, credential storage, and token refresh managed by Composio.
  • Safer credential handling so app credentials stay outside the model context and tool responses.
  • User-level account isolation so actions run against the correct connected account instead of mixing user access.

Connecting Linear to Muse

You add Composio to Muse once as a custom connector, then connect Linear from the chat.

1. Ask Muse to connect to Composio

Start a new Muse chat and send this message. Muse builds the connector and shows a button to add your API key.

bash
Create a Custom Connector for the Composio remote MCP server and connect to it:
- Name: Composio
- Transport: remote streamable HTTP
- URL: https://connect.composio.dev/mcp
- Auth: API key sent in the x-consumer-api-key header
Open the secure credentials store so I can enter the API key there, not in this chat. Then list its tools to confirm the connection works.

2. Copy your API key

Open the Muse page in your Composio dashboard and copy your API key. It starts with ck_.

Don't paste it into the chat. It goes in Muse's secure credentials store in the next step.

3. Add your API key in the secure credentials store

Tap the button Muse shows to open Add custom connector, paste your API key, then tap Add. Muse lists the Composio tools once it connects.

Muse secure credentials store with the connect.composio.dev URL, an API Key field, and the Add button

4. Connect your Linear account

Back in the chat, ask Muse to connect to Linear or give it any Linear task.

For example, ask it to:

  • "Create a new bug for team Mobile"
  • "Add a comment to issue LIN-123"
  • "List all cycles for the Design team"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Muse, and your Linear account is ready to use.

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

The Linear MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Linear account. It provides structured and secure access to your issues, projects, milestones, updates, comments, and teams, so your agent can search and update issues, manage projects, create milestones, publish project updates, and configure teams on your behalf.

  • Issue search and updates: Have your agent find issues by keywords, update their details, and remove labels that no longer apply.
  • Project planning: Let the agent create projects, adjust existing projects, and associate new projects with the right teams.
  • Milestone management: Direct your agent to create project milestones with clear names and optional target dates.
  • Project status updates: Instruct your agent to list, publish, and revise project updates so stakeholders stay informed.
  • Team and conversation management: Have your agent create or update teams, review workspace comments, and remove reactions from comments.

Way Forward

Now that Linear is connected, extend your setup by connecting the other apps you already use every day, so Muse can run true cross-app workflows end to end.

  • Connect Calendar to turn threads into scheduled meetings automatically.
  • Connect Slack or Teams to post summaries, approvals, and alerts where your team works.
  • Connect Notion, Linear, Jira, or Asana to convert requests into tickets, tasks, and docs.
  • Connect Drive, Dropbox, or OneDrive to fetch, file, and share attachments without manual steps.

Start with one workflow you do repeatedly, then keep adding apps as you find new handoffs. With everything behind a single connection, Muse can coordinate multiple tools safely and reliably in one conversation.

Troubleshooting

1. Why doesn't Muse show a button to add my API key?

Muse shows the button only when you ask it to open the secure credentials store.

  • Start a new chat.
  • Send the message from step 1 exactly as written.
  • If Muse asks for the key in the chat, do not paste it. Ask Muse to open the secure credentials store.

2. Why does the Composio connection fail after I add my API key?

The key or the connector settings are not correct.

  • Copy the full key from the Composio dashboard. It starts with ck_.
  • Make sure the URL is https://connect.composio.dev/mcp and the header is x-consumer-api-key.
  • Remove the Composio connector in Muse settings, then do steps 1 to 3 again.

3. Why doesn't Muse use the Composio tools for Linear?

Muse may not pick the Composio connector for the request.

  • Ask Muse to list its Composio tools.
  • Name Composio and Linear in your request, for example: Use Composio to connect to Linear.
  • If it still does not work, start a new chat and try again.

4. Why does Muse ask me to connect Linear again?

Your Linear connection expired or was removed.

  • Open the link Muse gives you and sign in to Linear again.
  • Check that the Linear connection shows as ACTIVE in the Composio dashboard.

5. What do I do if I pasted my API key into the chat?

Treat the key as exposed.

  • Create a new API key in the Composio dashboard and delete the old one.
  • Add the new key in Muse's secure credentials store, not in the chat.
TOOLS & TRIGGERS

Supported Tools and Triggers

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

Create attachment

Creates a new attachment and associates it with a specific, existing Linear issue.

Add reaction to comment

Tool to add a reaction to an existing Linear comment.

Create a comment

Creates a new comment on a specified Linear issue.

Create linear issue

Creates a new issue in a specified Linear project and team, requiring team_id and title, and allowing optional properties like description, assignee, state, priority, cycle, and due date.

Create issue relation

Create a relationship between two Linear issues using the issueRelationCreate mutation.

Create a label

Creates a new label in Linear for a specified team, used to categorize and organize issues.

Create Project

Creates a new Linear project with specified name and team associations.

Create Project Milestone

Tool to create a project milestone in Linear with a name and optional target date and sort order.

Create Project Update

Tool to create a project status update post for a Linear project.

Delete issue

Archives an existing Linear issue by its ID, which is Linear's standard way of deleting issues; the operation is idempotent.

Download issue attachments

Downloads a specific attachment from a Linear issue; the `file_name` must include the correct file extension.

Get current user

Gets the currently authenticated user's ID, name, email, and other profile information — this is the account behind the API token, which may be a bot or service account rather than a human user.

Get cycles by team ID

Retrieves all cycles for a specified Linear team ID; cycles are time-boxed work periods (like sprints).

Get create issue default params

Fetches a Linear team's default issue estimate and state, useful for pre-filling new issue forms.

Get Linear issue

Retrieves an existing Linear issue's comprehensive details, including id, identifier, title, description, timestamps, state, team, creator, attachments, comments (with user info and timestamps, use issue.

Get Linear project

Retrieves a single Linear project by its unique identifier.

List issue drafts

Tool to list issue drafts.

List issues by team ID

Tool to list all issues for a specific Linear team, scoped by team ID.

Get all cycles

Retrieves all cycles (time-boxed sprint iterations) org-wide from the Linear account; no filters applied.

List Linear issues

Lists non-archived Linear issues; if project_id is not specified, issues from all accessible projects are returned.

Get labels

Retrieves labels from Linear.

List linear projects

Retrieves all projects from the Linear account.

List Linear states

Retrieves all workflow states for a specified team in Linear, representing the stages an issue progresses through in that team's workflow.

Get teams

Retrieves all teams with their members and projects.

List Linear users

Lists all workspace users (not team-scoped) with their IDs, names, emails, and active status.

Remove label from Linear issue

Removes a specified label from an existing Linear issue using their IDs; successful even if the label isn't on the issue.

Remove reaction from comment

Tool to remove a reaction on a comment.

Run Query or Mutation

Execute any GraphQL query or mutation against Linear's API.

Search Linear issues

Search Linear issues using full-text search across identifier, title, and description.

Update issue

Updates an existing Linear issue using its `issue_id`; requires at least one other attribute for modification, and all provided entity IDs (for state, assignee, labels, etc.

Update a comment

Tool to update an existing Linear comment's body text.

Update Project

Tool to update an existing Linear project.

FRAMEWORKS

How to build Linear MCP Agent with another framework

Claude Code logo

Claude Code

Use Linear MCP with Claude Code

Cursor logo

Cursor

Use Linear MCP with Cursor

ChatGPT logo

ChatGPT

Use Linear MCP with ChatGPT

Claude Cowork logo

Claude Cowork

Use Linear MCP with Claude Cowork

Antigravity logo

Antigravity

Use Linear MCP with Antigravity

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Linear MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Linear MCP with Claude Agent SDK

Grok Bot logo

Grok Bot

Use Linear MCP with Grok Bot

Codex logo

Codex

Use Linear MCP with Codex

Kimi Code logo

Kimi Code

Use Linear MCP with Kimi Code

Grok Build logo

Grok Build

Use Linear MCP with Grok Build

VS Code logo

VS Code

Use Linear MCP with VS Code

OpenCode logo

OpenCode

Use Linear MCP with OpenCode

OpenClaw logo

OpenClaw

Use Linear MCP with OpenClaw

Hermes logo

Hermes

Use Linear MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Linear MCP with Atomic Agent

CLI logo

CLI

Use Linear MCP with CLI

Google ADK logo

Google ADK

Use Linear MCP with Google ADK

LangChain logo

LangChain

Use Linear MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Linear MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Linear MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Linear MCP with LlamaIndex

CrewAI logo

CrewAI

Use Linear MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Linear MCP with Pydantic AI

AutoGen logo

AutoGen

Use Linear MCP with AutoGen

FAQ

Frequently asked questions

Yes. Muse supports custom connectors that use the Model Context Protocol (MCP). Composio connects as one custom connector over remote streamable HTTP at https://connect.composio.dev/mcp, and gives Muse access to Linear and 1,500+ other apps.

Copy it from the Composio dashboard. It starts with ck_. Enter it only in Muse's secure credentials store, never in the chat.

Yes. Composio supports multiple connected accounts for the same app. Give each Linear connection a name, such as work or personal, and tell Muse which one to use.

Tokens, keys, and configuration are encrypted at rest and in transit. Your Composio API key stays in Muse's secure credentials store, not in the chat or the model context. Composio is SOC 2 Type 2 compliant.

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