A sandbox copy of the Linear MCP server. Its issues are fake, belong to the signed-in sandbox user, and keep every change.
MCP address: https://linear-sandbox.testmachine.ai/mcp, with OAuth sign-in (any username).
Tools: list_issues, get_issue, create_issue, update_issue, archive_issue, list_comments, create_comment, list_teams, list_issue_statuses, list_projects, list_users, get_user