Dart MCP Server

Instructions

Implementation Reference

• src/index.ts:521-595 (handler)

  The handler for 'create_task' tool call. It generates embedded Python code to create a TaskCreate object, wraps it in an Operation, executes a transaction via the Dart client, and returns the result.
  case 'create_task': { console.error('[Debug] Handling create_task request'); const pythonCode = ` # Parse optional parameters from JSON tags_json = '''${JSON.stringify(args.tags || [])}''' assignee_duids_json = '''${JSON.stringify(args.assignee_duids || [])}''' subscriber_duids_json = '''${JSON.stringify(args.subscriber_duids || [])}''' # Convert JSON strings to Python objects tags = json.loads(tags_json) if tags_json.strip() != '[]' else [] assignee_duids = json.loads(assignee_duids_json) if assignee_duids_json.strip() != '[]' else [] subscriber_duids = json.loads(subscriber_duids_json) if subscriber_duids_json.strip() != '[]' else [] print("[Debug] Creating task object", file=sys.stderr) # Create the task task = TaskCreate( source_type=TaskSourceType.CLI, duid=_make_duid(), # Generate a new DUID for the task dartboard_duid=dartboard_duid, # Set the dartboard DUID separately title='''${args.title.replace(/'/g, "\\'")}''', description='''${args.description.replace(/'/g, "\\'")}''', priority="${args.priority || 'Medium'}", size=${args.size || 1} ) # Add optional parameters if they exist if tags: print("[Debug] Adding tags:", tags, file=sys.stderr) task.tag_duids = tags if assignee_duids: print("[Debug] Adding assignees:", assignee_duids, file=sys.stderr) task.assignee_duids = assignee_duids if subscriber_duids: print("[Debug] Adding subscribers:", subscriber_duids, file=sys.stderr) task.subscriber_duids = subscriber_duids print("[Debug] Task object created:", task, file=sys.stderr) print("[Debug] Creating operation", file=sys.stderr) task_op = Operation( model=OperationModelKind.TASK, kind=OperationKind.CREATE, data=task ) print("[Debug] Operation created:", task_op, file=sys.stderr) print("[Debug] Executing transaction", file=sys.stderr) response = client.transact([task_op], TransactionKind.TASK_CREATE) print("[Debug] Transaction completed", file=sys.stderr) if response.results and response.results[0].success: task = response.results[0].models.tasks[0] print(f"Task created successfully with DUID: {task.duid}") print(f"[Debug] Task DUID: {task.duid}", file=sys.stderr) else: print("[Debug] Task creation failed", file=sys.stderr) if response.results: print(f"[Debug] Result: {response.results[0]}", file=sys.stderr) sys.exit(1)`; // Add proper indentation to the Python code const command = pythonCode.split('\n').map(line => line.length > 0 ? ' ' + line : line).join('\n'); console.error('[Debug] Running Python command for task creation'); const output = await this.runDartCommand(command); console.error('[Debug] Task creation output:', output); const response = { content: [{ type: 'text', text: output, }], }; console.error('[Debug] Sending task creation response:', JSON.stringify(response, null, 2)); return response; }
• src/index.ts:252-300 (schema)

  Input schema for the create_task tool, specifying required title and description, and optional fields like priority, tags, size, assignees, and subscribers.
  name: 'create_task', description: 'Create a new Dart task', inputSchema: { type: 'object', properties: { title: { type: 'string', description: 'Title of the task', }, description: { type: 'string', description: 'Description of the task', }, priority: { type: 'string', description: 'Priority of the task', enum: ['Low', 'Medium', 'High', 'Critical'], }, tags: { type: 'array', items: { type: 'string', }, description: 'Tags for the task', }, size: { type: 'number', description: 'Size/complexity of the task (1-5)', minimum: 1, maximum: 5, }, assignee_duids: { type: 'array', items: { type: 'string', }, description: 'List of assignee DUIDs', }, subscriber_duids: { type: 'array', items: { type: 'string', }, description: 'List of subscriber DUIDs', } }, required: ['title', 'description'], }, },
• src/index.ts:230-513 (registration)

  The ListTools request handler registers the create_task tool by including it in the static tools array returned to clients.
  this.server.setRequestHandler(ListToolsRequestSchema, async () => { console.error('[Debug] Handling listTools request'); const tools = [ { name: 'get_default_status', description: 'Get the default status DUIDs', inputSchema: { type: 'object', properties: {}, required: [], }, }, { name: 'get_default_space', description: 'Get the default space DUID', inputSchema: { type: 'object', properties: {}, required: [], }, }, { name: 'create_task', description: 'Create a new Dart task', inputSchema: { type: 'object', properties: { title: { type: 'string', description: 'Title of the task', }, description: { type: 'string', description: 'Description of the task', }, priority: { type: 'string', description: 'Priority of the task', enum: ['Low', 'Medium', 'High', 'Critical'], }, tags: { type: 'array', items: { type: 'string', }, description: 'Tags for the task', }, size: { type: 'number', description: 'Size/complexity of the task (1-5)', minimum: 1, maximum: 5, }, assignee_duids: { type: 'array', items: { type: 'string', }, description: 'List of assignee DUIDs', }, subscriber_duids: { type: 'array', items: { type: 'string', }, description: 'List of subscriber DUIDs', } }, required: ['title', 'description'], }, }, { name: 'update_task', description: 'Update an existing task', inputSchema: { type: 'object', properties: { duid: { type: 'string', description: 'DUID of the task to update', }, status_duid: { type: 'string', description: 'New status DUID', }, title: { type: 'string', description: 'New title for the task', }, description: { type: 'string', description: 'New description for the task', }, priority: { type: 'string', description: 'New priority for the task', enum: ['Low', 'Medium', 'High', 'Critical'], } }, required: ['duid'], }, }, { name: 'get_dartboards', description: 'Get available dartboards', inputSchema: { type: 'object', properties: { space_duid: { type: 'string', description: 'Space DUID to get dartboards from', } }, required: ['space_duid'], }, }, { name: 'get_folders', description: 'Get available folders', inputSchema: { type: 'object', properties: { space_duid: { type: 'string', description: 'Space DUID to get folders from', } }, required: ['space_duid'], }, }, { name: 'create_folder', description: 'Create a new folder in a space', inputSchema: { type: 'object', properties: { space_duid: { type: 'string', description: 'Space DUID to create the folder in', }, title: { type: 'string', description: 'Title of the folder', }, description: { type: 'string', description: 'Description of the folder', }, kind: { type: 'string', description: 'Kind of folder', enum: ['Default', 'Reports', 'Other'], default: 'Default' } }, required: ['space_duid', 'title'], }, }, { name: 'create_doc', description: 'Create a new document or report', inputSchema: { type: 'object', properties: { folder_duid: { type: 'string', description: 'Folder DUID to create the document in', }, title: { type: 'string', description: 'Title of the document', }, text: { type: 'string', description: 'Content of the document', }, text_markdown: { type: 'string', description: 'Markdown content of the document', }, report_kind: { type: 'string', description: 'Kind of report (if creating a report)', enum: ['Changelog', 'Standup'], }, editor_duids: { type: 'array', items: { type: 'string', }, description: 'List of editor DUIDs', }, subscriber_duids: { type: 'array', items: { type: 'string', }, description: 'List of subscriber DUIDs', } }, required: ['folder_duid', 'title'], }, }, { name: 'create_space', description: 'Create a new space', inputSchema: { type: 'object', properties: { title: { type: 'string', description: 'Title of the space' }, description: { type: 'string', description: 'Description of the space' }, abrev: { type: 'string', description: 'Short abbreviation for the space' }, accessible_by_team: { type: 'boolean', description: 'Whether the space is accessible by the whole team', default: true }, accessible_by_user_duids: { type: 'array', items: { type: 'string' }, description: 'List of user DUIDs who can access the space' }, icon_kind: { type: 'string', enum: ['None', 'Icon', 'Emoji'], description: 'Kind of icon to use', default: 'None' }, icon_name_or_emoji: { type: 'string', description: 'Icon name or emoji character' }, color_hex: { type: 'string', description: 'Color in hex format (e.g. #FF0000)' }, sprint_mode: { type: 'string', enum: ['None', 'ANBA'], description: 'Sprint mode for the space', default: 'None' }, sprint_replicate_on_rollover: { type: 'boolean', description: 'Whether to replicate sprints on rollover', default: false }, sprint_name_fmt: { type: 'string', description: 'Sprint name format' } }, required: ['title'] } }, { name: 'delete_space', description: 'Delete a space and all its contents', inputSchema: { type: 'object', properties: { space_duid: { type: 'string', description: 'DUID of the space to delete' } }, required: ['space_duid'] } } ]; console.error('[Debug] Sending tools response:', JSON.stringify(tools, null, 2)); return { tools }; });
• src/index.ts:123-227 (helper)

  Helper method runDartCommand used by create_task (and other tools) to execute dynamically generated Python code that interacts with the Dart API via child_process.spawn.
  async runDartCommand(args) { return new Promise((resolve, reject) => { // Use pyenv Python const pythonPath = '/Users/speed/.pyenv/shims/python'; console.error('[Debug] Running Python command with:', pythonPath); const command = `import sys import os import traceback import json from dart import Dart, Operation, OperationKind, OperationModelKind, TaskCreate, TaskUpdate, TransactionKind, TaskSourceType, SpaceCreate from dart.generated.types import UNSET from dart.dart import _Session, UserBundle, _make_duid from dart.generated.models.icon_kind import IconKind from dart.generated.models.sprint_mode import SprintMode from dart.generated.models.validation_error_response import ValidationErrorResponse def initialize(): print("[Debug] Starting Python execution", file=sys.stderr) print("[Debug] Current directory:", os.getcwd(), file=sys.stderr) print("[Debug] PYTHONPATH:", os.environ.get('PYTHONPATH'), file=sys.stderr) print("[Debug] DART_TOKEN:", os.environ.get('DART_TOKEN'), file=sys.stderr) session = _Session() print("[Debug] Session created", file=sys.stderr) bundle = UserBundle(session) print("[Debug] UserBundle created", file=sys.stderr) dartboard_duid = bundle.default_dartboard["duid"] print(f"[Debug] Got dartboard DUID: {dartboard_duid}", file=sys.stderr) client = Dart() print("[Debug] Dart client created", file=sys.stderr) return client, bundle, dartboard_duid def run_command(client, bundle, dartboard_duid): ${args} def main(): client, bundle, dartboard_duid = initialize() run_command(client, bundle, dartboard_duid) try: main() except Exception as e: print(f"Error: {str(e)}", file=sys.stderr) traceback.print_exc(file=sys.stderr) sys.exit(1)`; console.error('[Debug] Python command:', command); // Create a clean environment without virtual env variables const env = { ...process.env }; delete env.VIRTUAL_ENV; delete env.CONDA_PREFIX; delete env.CONDA_DEFAULT_ENV; delete env.CONDA_PYTHON_EXE; const childProcess = spawn(pythonPath, ['-c', command], { env: { ...env, PYTHONUNBUFFERED: '1', PYTHONPATH: process.env.PYTHONPATH || process.cwd(), DART_TOKEN: process.env.DART_TOKEN, }, stdio: ['pipe', 'pipe', 'pipe'], }); let output = ''; let errorOutput = ''; childProcess.stdout?.on('data', (data) => { const str = data.toString(); console.error('[Debug] Python stdout:', str); output += str; }); childProcess.stderr?.on('data', (data) => { const str = data.toString(); console.error('[Debug] Python stderr:', str); errorOutput += str; }); childProcess.on('error', (error) => { console.error('[Debug] Python process error:', error); reject(new Error(`Failed to start Python process: ${error.message}`)); }); // Add timeout const timeout = setTimeout(() => { console.error('[Debug] Python command timed out'); childProcess.kill(); reject(new Error('Command timed out')); }, 30000); // 30 second timeout childProcess.on('close', (code) => { clearTimeout(timeout); console.error(`[Debug] Python process exited with code ${code}`); if (code === 0) { resolve(output.trim()); } else { reject(new Error(errorOutput || `Command failed with exit code ${code}`)); } }); }); }