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jules_create_task

Create tasks for Google Jules AI coding assistant to automate development workflows in GitHub repositories with specific branch targeting.

Instructions

Create a new task in Google Jules with repository and description

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
branchNoGit branch to work on (optional, defaults to main)
descriptionYesTask description - what you want Jules to do
repositoryYesGitHub repository in format owner/repo-name

Implementation Reference

  • Main handler function that implements the jules_create_task tool. Uses Playwright to automate browser interactions for creating a task on the Jules website, fills in repo/branch/description, submits, extracts task ID/URL, and persists task data.
    private async createTask(args: any) {
      const { description, repository, branch = 'main' } = args;
      const page = await this.getPage();
    
      try {
        // Navigate to Jules task creation
        await page.goto(`${this.config.baseUrl}/task`);
        await page.waitForLoadState('networkidle');
    
        // Click new task button if needed
        const newTaskButton = page.locator('button.mat-mdc-tooltip-trigger svg');
        if (await newTaskButton.isVisible()) {
          await newTaskButton.click();
        }
    
        // Repository selection
        await page.locator("div.repo-select div.header-container").click();
        await page.locator("div.repo-select input").fill(repository);
        await page.locator("div.repo-select div.opt-list > swebot-option").first().click();
    
        // Branch selection
        await page.locator("div.branch-select div.header-container > div").click();
        
        // Try to find specific branch or select first available
        const branchOptions = page.locator("div.branch-select swebot-option");
        const branchCount = await branchOptions.count();
        if (branchCount > 0) {
          await branchOptions.first().click();
        }
    
        // Task description
        await page.locator("textarea").fill(description);
        await page.keyboard.press('Enter');
    
        // Submit
        await page.locator("div.chat-container button:nth-of-type(2)").click();
    
        // Wait for task creation and get URL
        await page.waitForURL('**/task/**');
        const url = page.url();
        const taskId = this.extractTaskId(url);
    
        // Create task object
        const task: JulesTask = {
          id: taskId,
          title: description.slice(0, 50) + (description.length > 50 ? '...' : ''),
          description,
          repository,
          branch,
          status: 'pending',
          createdAt: new Date().toISOString(),
          updatedAt: new Date().toISOString(),
          url,
          chatHistory: [],
          sourceFiles: []
        };
    
        // Save to data
        const data = await this.loadTaskData();
        data.tasks.push(task);
        await this.saveTaskData(data);
    
        return {
          content: [
            {
              type: 'text',
              text: `Task created successfully!\n\nTask ID: ${taskId}\nRepository: ${repository}\nBranch: ${branch}\nDescription: ${description}\nURL: ${url}\n\nTask is now pending Jules' analysis. You can check progress with jules_get_task.`
            }
          ]
        };
      } catch (error) {
        throw new Error(`Failed to create task: ${error}`);
      }
    }
  • Input schema definition for the jules_create_task tool, specifying required description and repository parameters.
      name: 'jules_create_task',
      description: 'Create a new task in Google Jules with repository and description',
      inputSchema: {
        type: 'object',
        properties: {
          description: {
            type: 'string',
            description: 'Task description - what you want Jules to do',
          },
          repository: {
            type: 'string',
            description: 'GitHub repository in format owner/repo-name',
          },
          branch: {
            type: 'string',
            description: 'Git branch to work on (optional, defaults to main)',
          },
        },
        required: ['description', 'repository'],
      },
    },
  • src/index.ts:360-398 (registration)
    Registration of tool handlers via setRequestHandler for CallToolRequestSchema, with switch case dispatching to createTask for 'jules_create_task'.
    this.server.setRequestHandler(CallToolRequestSchema, async (request) => {
      const { name, arguments: args } = request.params;
    
      try {
        switch (name) {
          case 'jules_create_task':
            return await this.createTask(args);
          case 'jules_get_task':
            return await this.getTask(args);
          case 'jules_send_message':
            return await this.sendMessage(args);
          case 'jules_approve_plan':
            return await this.approvePlan(args);
          case 'jules_resume_task':
            return await this.resumeTask(args);
          case 'jules_list_tasks':
            return await this.listTasks(args);
          case 'jules_analyze_code':
            return await this.analyzeCode(args);
          case 'jules_bulk_create_tasks':
            return await this.bulkCreateTasks(args);
          case 'jules_screenshot':
            return await this.takeScreenshot(args);
          case 'jules_get_cookies':
            return await this.getCookies(args);
          case 'jules_set_cookies':
            return await this.setCookies(args);
          case 'jules_session_info':
            return await this.getSessionInfo(args);
          case 'jules_setup_wizard':
            return await this.setupWizard(args);
          default:
            throw new McpError(ErrorCode.MethodNotFound, `Unknown tool: ${name}`);
        }
      } catch (error) {
        const errorMessage = error instanceof Error ? error.message : String(error);
        throw new McpError(ErrorCode.InternalError, `Error in ${name}: ${errorMessage}`);
      }
    });
  • src/index.ts:118-358 (registration)
    Tool listing registration via setRequestHandler for ListToolsRequestSchema, which includes the jules_create_task tool in the returned tools array.
    this.server.setRequestHandler(ListToolsRequestSchema, async () => {
      return {
        tools: [
          // === CORE TASK MANAGEMENT ===
          {
            name: 'jules_create_task',
            description: 'Create a new task in Google Jules with repository and description',
            inputSchema: {
              type: 'object',
              properties: {
                description: {
                  type: 'string',
                  description: 'Task description - what you want Jules to do',
                },
                repository: {
                  type: 'string',
                  description: 'GitHub repository in format owner/repo-name',
                },
                branch: {
                  type: 'string',
                  description: 'Git branch to work on (optional, defaults to main)',
                },
              },
              required: ['description', 'repository'],
            },
          },
          {
            name: 'jules_get_task',
            description: 'Get details of a specific Jules task by ID or URL',
            inputSchema: {
              type: 'object',
              properties: {
                taskId: {
                  type: 'string',
                  description: 'Task ID or full Jules task URL',
                },
              },
              required: ['taskId'],
            },
          },
          {
            name: 'jules_list_tasks',
            description: 'List all Jules tasks with their status',
            inputSchema: {
              type: 'object',
              properties: {
                status: {
                  type: 'string',
                  enum: ['all', 'active', 'pending', 'completed', 'paused'],
                  description: 'Filter tasks by status',
                },
                limit: {
                  type: 'number',
                  description: 'Maximum number of tasks to return (default 10)',
                },
              },
            },
          },
          {
            name: 'jules_send_message',
            description: 'Send a message/instruction to Jules in an active task',
            inputSchema: {
              type: 'object',
              properties: {
                taskId: {
                  type: 'string',
                  description: 'Task ID or URL',
                },
                message: {
                  type: 'string',
                  description: 'Message to send to Jules',
                },
              },
              required: ['taskId', 'message'],
            },
          },
          {
            name: 'jules_approve_plan',
            description: 'Approve Jules execution plan for a task',
            inputSchema: {
              type: 'object',
              properties: {
                taskId: {
                  type: 'string',
                  description: 'Task ID or URL',
                },
              },
              required: ['taskId'],
            },
          },
          {
            name: 'jules_resume_task',
            description: 'Resume a paused Jules task',
            inputSchema: {
              type: 'object',
              properties: {
                taskId: {
                  type: 'string',
                  description: 'Task ID or URL',
                },
              },
              required: ['taskId'],
            },
          },
          // === ADVANCED TASK OPERATIONS ===
          {
            name: 'jules_analyze_code',
            description: 'Analyze code changes and diff in a Jules task',
            inputSchema: {
              type: 'object',
              properties: {
                taskId: {
                  type: 'string',
                  description: 'Task ID or URL',
                },
                includeSourceCode: {
                  type: 'boolean',
                  description: 'Whether to include full source code content',
                },
              },
              required: ['taskId'],
            },
          },
          {
            name: 'jules_bulk_create_tasks',
            description: 'Create multiple tasks from a list of descriptions and repositories',
            inputSchema: {
              type: 'object',
              properties: {
                tasks: {
                  type: 'array',
                  items: {
                    type: 'object',
                    properties: {
                      description: { type: 'string' },
                      repository: { type: 'string' },
                      branch: { type: 'string' },
                    },
                    required: ['description', 'repository'],
                  },
                  description: 'Array of task objects to create',
                },
              },
              required: ['tasks'],
            },
          },
          // === SESSION & AUTHENTICATION MANAGEMENT ===
          {
            name: 'jules_session_info',
            description: 'Get current session configuration and authentication status',
            inputSchema: {
              type: 'object',
              properties: {},
            },
          },
          {
            name: 'jules_setup_wizard',
            description: 'Interactive session setup wizard for automated Google authentication configuration',
            inputSchema: {
              type: 'object',
              properties: {
                environment: {
                  type: 'string',
                  enum: ['local', 'cloud', 'smithery', 'auto-detect'],
                  description: 'Deployment environment (auto-detect will analyze current setup)',
                },
                preferences: {
                  type: 'object',
                  properties: {
                    priority: {
                      type: 'string',
                      enum: ['ease-of-use', 'reliability', 'portability', 'performance'],
                      description: 'User priority for session management'
                    },
                    hasChrome: {
                      type: 'boolean',
                      description: 'Whether user has local Chrome browser access'
                    },
                    cloudDeployment: {
                      type: 'boolean', 
                      description: 'Whether deploying to cloud platforms'
                    }
                  }
                }
              },
            },
          },
          {
            name: 'jules_get_cookies',
            description: 'Extract current browser cookies for session persistence and backup',
            inputSchema: {
              type: 'object',
              properties: {
                format: {
                  type: 'string',
                  enum: ['json', 'string'],
                  description: 'Output format for cookies (default: json)',
                },
              },
            },
          },
          {
            name: 'jules_set_cookies',
            description: 'Set browser cookies from string or JSON for authentication',
            inputSchema: {
              type: 'object',
              properties: {
                cookies: {
                  type: 'string',
                  description: 'Cookies as JSON string or cookie string format',
                },
                format: {
                  type: 'string',
                  enum: ['json', 'string'],
                  description: 'Format of input cookies (default: json)',
                },
              },
              required: ['cookies'],
            },
          },
          // === DEBUGGING & UTILITIES ===
          {
            name: 'jules_screenshot',
            description: 'Take a screenshot of current Jules page for debugging and verification',
            inputSchema: {
              type: 'object',
              properties: {
                taskId: {
                  type: 'string',
                  description: 'Optional task ID to navigate to first',
                },
                filename: {
                  type: 'string',
                  description: 'Optional filename for screenshot',
                },
              },
            },
          },
        ],
      };
    });

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden. It discloses that the tool creates a task (a write operation) but omits important behavioral details such as required permissions, idempotency, error behavior, or what response to expect. This is insufficient for a create tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, concise sentence that directly states the tool's purpose. It is front-loaded with the action and resource, containing no unnecessary words or details.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema and only 3 parameters, the description lacks essential completeness. It does not explain what the tool returns (e.g., task ID), how to interpret success/failure, or side effects. A create operation typically requires such context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the input schema already describes each parameter. The description merely echoes 'repository and description' without adding new semantics or clarifying optional parameters like 'branch'. This meets the baseline but adds no extra value.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Create', the resource 'task', and the context 'in Google Jules'. It mentions key parameters 'repository and description'. However, it does not explicitly differentiate from the sibling tool 'jules_bulk_create_tasks', though the singularity of 'a new task' implies a single task creation.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives like 'jules_bulk_create_tasks' or 'jules_analyze_code'. No prerequisites, context, or exclusion criteria are mentioned, leaving the agent without decision support.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.