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.

47 Tools12 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.

For exact tool slugs and parameter tables, see the tool catalog in the Composio docs.

Also integrate Linear with

Why use Composio?

  • Cross-app workflows across 1,700+ 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.

Archive issue

Archives an existing Linear issue by its UUID or shorthand identifier, removing it from active views while preserving its data for future reference.

Archive Project

Archives an existing Linear project by its UUID, removing it from active views.

Archive Project Update

Archives a project update in Linear, hiding it from the default view while preserving its data.

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 an issue in a specified Linear team with a title and optional project, description, assignee, state, priority, cycle, due date, and other properties.

Create issue relation

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

Create a label

Creates a label for a specified Linear team, or returns an existing exact-name match found in the team's initial label results.

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.

Create Team

Creates a new team in Linear with the specified name and key.

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 files

Downloads a Linear Attachment record or a private upload embedded in issue/comment Markdown; `file_name` must include the correct extension.

Get a comment

Retrieves a single Linear comment by its unique ID.

Get current user

Gets the currently authenticated Linear user's ID, name, email, and other profile information.

Get cycles by team ID

Lists cycles for a specified Linear team ID, including progress, creation and end times, and history.

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 a Linear issue by UUID or shorthand identifier, including its details, parent, cycle, attachments, comments and subscribers.

Get Linear project

Retrieves a single Linear project by its unique identifier.

Get Project Update

Retrieves a specific project update by its unique identifier.

List comments

Lists comments from Linear workspace accessible to the authenticated user.

List issue drafts

Lists the connected user's issue drafts for review or editing.

List issues by team ID

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

Get all cycles

Lists cycles across the Linear account without filters, including team IDs and scheduled end times.

List Linear issues

Lists non-archived Linear issues with optional project and assignee filters, returning a paginated issues array and page_info.

Get labels

Retrieves paginated Linear issue labels for a specified team or across the workspace.

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

Lists visible Linear teams with their members and project IDs, with pagination for teams but not nested members or projects.

List Linear users

Lists workspace users with IDs, names, emails, and active status.

List project updates

Retrieves all project updates from the Linear workspace.

Remove label from Linear issue

Removes a specified label from a Linear issue using the issue and label IDs, and returns the updated issue and labels.

Remove reaction from comment

Tool to remove a reaction on a comment.

Resolve comment

Marks a Linear comment as resolved.

Run Query or Mutation

Execute a Linear GraphQL query or mutation to retrieve or change accessible data.

Search Linear issues

Searches Linear issues by full-text query, with pagination and an option to include archived issues.

Unarchive Project Update

Unarchive a previously archived project update in Linear.

Unresolve a comment

Unresolves a previously resolved Linear comment, marking it as requiring attention again.

Update issue

Updates an existing Linear issue by ID, requiring at least one field to modify; supplied fields overwrite existing values and labels replace the label set.

Update a comment

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

Update Project

Tool to update an existing Linear project.

Update Project Update

Tool to update an existing Linear project update post.

Update Team

Updates an existing Linear team's settings, including its name, key, cycle settings, and workflow state configuration.

Validate credential

Validates the Linear API credentials by checking if the authentication token can successfully query the current user.

Who Am I

Return the identity (name, email) of the connected Linear account.

FAQ

Frequently asked questions

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