Dart MCP Server

Instructions

Implementation Reference

• src/index.ts:903-1015 (handler)

  Handler for the 'create_doc' tool. Validates required parameters (folder_duid, title), generates embedded Python code to create a Doc using Dart's DocCreate, Operation, and transact with TransactionKind.DOC_CREATE, handles optional fields like text, report_kind, editors/subscribers, executes via runDartCommand, and returns the output text.
  case 'create_doc': { console.error('[Debug] Handling create_doc request'); // Validate required fields if (!args.folder_duid) { throw new McpError(ErrorCode.INVALID_PARAMS, "folder_duid is required"); } if (!args.title) { throw new McpError(ErrorCode.INVALID_PARAMS, "title is required"); } const pythonCode = ` # Create a new document print("[Debug] Creating document", file=sys.stderr) try: from dart import Operation, OperationKind, OperationModelKind, DocCreate, TransactionKind, DocSourceType from dart.generated.models.report_kind import ReportKind from dart.generated.models.validation_error_response import ValidationErrorResponse from dart.dart import _make_duid folder_duid = "${args.folder_duid}" title = '''${args.title.replace(/'/g, "\\'")}''' # title is validated above text = '''${args.text ? args.text.replace(/'/g, "\\'") : ''}''' text_markdown = '''${args.text_markdown ? args.text_markdown.replace(/'/g, "\\'") : ''}''' report_kind_str = "${args.report_kind || ''}" print(f"[Debug] Creating document in folder: {folder_duid}", file=sys.stderr) print(f"[Debug] Document title: {title}", file=sys.stderr) if report_kind_str: print(f"[Debug] Report kind: {report_kind_str}", file=sys.stderr) # Create the document object doc = DocCreate( duid=_make_duid(), folder_duid=folder_duid, title=title, source_type=DocSourceType.APPLICATION, order="0" # Add order field like in create_folder ) # Add optional fields if text: doc.text = text if text_markdown: doc.text_markdown = text_markdown if report_kind_str: doc.report_kind = ReportKind(report_kind_str) # Add editor and subscriber DUIDs if provided editor_duids_json = '''${JSON.stringify(args.editor_duids || [])}''' subscriber_duids_json = '''${JSON.stringify(args.subscriber_duids || [])}''' editor_duids = json.loads(editor_duids_json) subscriber_duids = json.loads(subscriber_duids_json) if editor_duids: doc.editor_duids = editor_duids if subscriber_duids: doc.subscriber_duids = subscriber_duids print("[Debug] Document object created:", doc, file=sys.stderr) # Create the operation doc_op = Operation( model=OperationModelKind.DOC, kind=OperationKind.CREATE, data=doc ) print("[Debug] Operation created:", doc_op, file=sys.stderr) # Execute the transaction print("[Debug] Executing transaction", file=sys.stderr) response = client.transact([doc_op], TransactionKind.DOC_CREATE) print("[Debug] Transaction completed", file=sys.stderr) print("[Debug] Response type:", type(response), file=sys.stderr) print("[Debug] Response:", response, file=sys.stderr) if isinstance(response, ValidationErrorResponse): print("[Debug] Validation error:", response.items.additional_properties, file=sys.stderr) print(f"Validation error: {response.items.additional_properties}") sys.exit(1) if response.results and response.results[0].success: doc = response.results[0].models.docs[0] print(f"Document created successfully") print(f"Title: {doc.title}") print(f"DUID: {doc.duid}") if hasattr(doc, 'report_kind') and doc.report_kind: print(f"Report Kind: {doc.report_kind}") print(f"[Debug] Document DUID: {doc.duid}", file=sys.stderr) else: print("[Debug] Document creation failed", file=sys.stderr) if response.results: print(f"[Debug] Result: {response.results[0]}", file=sys.stderr) sys.exit(1) except Exception as e: print(f"[Debug] Error creating document: {str(e)}", file=sys.stderr) print("[Debug] Error type:", type(e), file=sys.stderr) traceback.print_exc(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 document creation'); const output = await this.runDartCommand(command); console.error('[Debug] Document creation output:', output); const response = { content: [{ type: 'text', text: output, }], }; return response; }
• src/index.ts:389-432 (schema)

  Input schema for the 'create_doc' tool, defining parameters like folder_duid (required), title (required), text, text_markdown, report_kind (enum: Changelog, Standup), editor_duids, subscriber_duids.
  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'], }, },
• src/index.ts:230-513 (registration)

  Registration of the 'create_doc' tool in the listTools response, including its name, description, and inputSchema.
  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_doc (and other tools) to execute the generated Python code interacting with the Dart library via child_process.spawn of Python.
  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}`)); } }); }); }