todoist-mcp

Instructions

Implementation Reference

• src/utils/handlers.ts:201-353 (handler)

  Core handler logic for batch delete_projects tool: fetches projects list if name lookup needed, resolves project ID by name, validates and encodes ID for path '/projects/{id}', executes todoistApi.delete(finalPath), returns batched results with success summary.
  const handler = async (args: z.infer<typeof batchSchema>): Promise<any> => { const { items } = args; // For modes other than create, check if name lookup is needed let allItems: any[] = []; const needsNameLookup = options.mode !== 'create' && options.nameField && options.findByName && items.some(item => item[options.nameField!] && !item[options.idField!]); if (needsNameLookup) { // Determine the base path for fetching all items // Example: /tasks from /tasks/{id} const lookupPath = options.basePath || (options.path ? options.path.split('/{')[0] : ''); allItems = await todoistApi.get(lookupPath, {}); } const results = await Promise.all( items.map(async item => { if (options.validateItem) { const validation = options.validateItem(item); if (!validation.valid) { return { success: false, error: validation.error || 'Validation failed', item, }; } } try { let finalPath = ''; const apiParams = { ...item }; // For modes where need id if (options.mode !== 'create' && options.idField) { let itemId = item[options.idField]; let matchedName = null; let matchedContent = null; // If no ID but name is provided, search by name if (!itemId && item[options.nameField!] && options.findByName) { const searchName = item[options.nameField!]; const matchedItem = options.findByName(searchName, allItems); if (!matchedItem) { return { success: false, error: `Item not found with name: ${searchName}`, item, }; } itemId = matchedItem.id; matchedName = searchName; matchedContent = matchedItem.content; } if (!itemId) { return { success: false, error: `Either ${options.idField} or ${options.nameField} must be provided`, item, }; } // Apply security validation to itemId before using in path const safeItemId = validatePathParameter(itemId, options.idField || 'id'); if (options.basePath && options.pathSuffix) { finalPath = `${options.basePath}${options.pathSuffix.replace('{id}', safeItemId)}`; } else if (options.path) { finalPath = options.path.replace('{id}', safeItemId); } delete apiParams[options.idField]; if (options.nameField) { delete apiParams[options.nameField]; } let result; switch (options.method) { case 'GET': result = await todoistApi.get(finalPath, apiParams); break; case 'POST': result = await todoistApi.post(finalPath, apiParams); break; case 'DELETE': result = await todoistApi.delete(finalPath); break; } const response: any = { success: true, id: itemId, result, }; if (matchedName) { response.found_by_name = matchedName; response.matched_content = matchedContent; } return response; } // Create mode else { finalPath = options.path || options.basePath || ''; let result; switch (options.method) { case 'GET': result = await todoistApi.get(finalPath, apiParams); break; case 'POST': result = await todoistApi.post(finalPath, apiParams); break; case 'DELETE': result = await todoistApi.delete(finalPath); break; } return { success: true, created_item: result, }; } } catch (error) { return { success: false, error: error instanceof Error ? error.message : String(error), item, }; } }) ); const successCount = results.filter(r => r.success).length; return { success: successCount === items.length, summary: { total: items.length, succeeded: successCount, failed: items.length - successCount, }, results, }; };
• src/tools/projects.ts:66-80 (registration)

  Tool registration for 'delete_projects': configures batch handler with schema (id or name), DELETE method to '/projects/{id}', delete mode, name-based lookup.
  createBatchApiHandler({ name: 'delete_projects', description: 'Delete projects from Todoist', itemSchema: { id: z.string().optional().describe('ID of the project to delete (preferred over name)'), name: z.string().optional().describe('Name of the project to delete'), }, method: 'DELETE', path: '/projects/{id}', mode: 'delete', idField: 'id', nameField: 'name', findByName: (name, items) => items.find(item => item.name.toLowerCase().includes(name.toLowerCase())), });
• src/tools/projects.ts:69-72 (schema)

  Input schema for delete_projects: optional project id (preferred) or name.
  itemSchema: { id: z.string().optional().describe('ID of the project to delete (preferred over name)'), name: z.string().optional().describe('Name of the project to delete'), },
• src/utils/handlers.ts:40-77 (helper)

  createHandler helper: wraps the tool handler, handles errors, formats output, and registers the tool with MCP server.tool(name, description, schema, callback). Called by createBatchApiHandler.
  export function createHandler<T extends z.ZodRawShape>( name: string, description: string, paramsSchema: T, handler: (args: HandlerArgs<T>) => Promise<any> ): void { const mcpToolCallback = async (args: HandlerArgs<T>): Promise<CallToolResult> => { try { const result = await handler(args); return { content: [ { type: 'text', text: JSON.stringify(result ?? null, null, 2).trim(), }, ], }; } catch (error) { const errorMessage = error instanceof Error ? error.message : String(error); console.error(`Error in tool ${name}:`, error); return { isError: true, content: [ { type: 'text', text: `Error executing tool '${name}': ${errorMessage}`, }, ], }; } }; // Crazy cast, if you can do it better, please, let me knows server.tool(name, description, paramsSchema, mcpToolCallback as unknown as ToolCallback<T>); }
• src/utils/handlers.ts:355-356 (helper)

  createBatchApiHandler calls createHandler to register the generated batch handler for delete_projects.
  return createHandler(options.name, finalDescription, batchSchema.shape, handler); }