# How to integrate Toggl MCP with Vercel AI SDK v6

```json
{
  "title": "How to integrate Toggl MCP with Vercel AI SDK v6",
  "toolkit": "Toggl",
  "toolkit_slug": "toggl",
  "framework": "Vercel AI SDK",
  "framework_slug": "ai-sdk",
  "url": "https://composio.dev/toolkits/toggl/framework/ai-sdk",
  "markdown_url": "https://composio.dev/toolkits/toggl/framework/ai-sdk.md",
  "updated_at": "2026-05-12T10:28:49.376Z"
}
```

## Introduction

This guide walks you through connecting Toggl to Vercel AI SDK v6 using the Composio tool router. By the end, you'll have a working Toggl agent that can start a new time entry for coding, list all clients in your workspace, get details of your current running timer through natural language commands.
This guide will help you understand how to give your Vercel AI SDK agent real control over a Toggl account through Composio's Toggl MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Toggl with

- [OpenAI Agents SDK](https://composio.dev/toolkits/toggl/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/toggl/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/toggl/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/toggl/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/toggl/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/toggl/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/toggl/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/toggl/framework/cli)
- [Google ADK](https://composio.dev/toolkits/toggl/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/toggl/framework/langchain)
- [Mastra AI](https://composio.dev/toolkits/toggl/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/toggl/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/toggl/framework/crew-ai)

## TL;DR

Here's what you'll learn:
- How to set up and configure a Vercel AI SDK agent with Toggl integration
- Using Composio's Tool Router to dynamically load and access Toggl tools
- Creating an MCP client connection using HTTP transport
- Building an interactive CLI chat interface with conversation history management
- Handling tool calls and results within the Vercel AI SDK framework

## What is Vercel AI SDK?

The Vercel AI SDK is a TypeScript library for building AI-powered applications. It provides tools for creating agents that can use external services and maintain conversation state.
Key features include:
- streamText: Core function for streaming responses with real-time tool support
- MCP Client: Built-in support for Model Context Protocol via @ai-sdk/mcp
- Step Counting: Control multi-step tool execution with stopWhen: stepCountIs()
- OpenAI Provider: Native integration with OpenAI models

## What is the Toggl MCP server, and what's possible with it?

The Toggl MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Toggl account. It provides structured and secure access to your time tracking data, so your agent can perform actions like logging time entries, managing clients and projects, handling tags, and retrieving detailed activity reports on your behalf.
- Automated time entry management: Let your agent start, stop, and create new time entries with precise details, making it easy to track your work hours hands-free.
- Client and project organization: Easily add new clients or projects, fetch client details, or remove outdated clients to keep your workspace up to date and well-structured.
- Real-time activity tracking: Ask your agent to retrieve the currently running time entry or list recent activities, so you always know where your time is going.
- Tag management and organization: Automatically create or delete tags to categorize your time entries, helping you analyze how your time is spent across different tasks.
- Comprehensive workspace administration: Have your agent create organizations, set up workspaces, and ensure all your time tracking infrastructure is ready to go without manual setup.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `TOGGL_CREATE_CLIENT` | Create Client | Tool to create a new client in a workspace. Use when you need to add a client to a workspace after workspace setup. |
| `TOGGL_CREATE_GROUP` | Create Group | Tool to create a new group in a Toggl organization. Use when organizing users into teams and controlling access to workspaces. Groups help manage user permissions and workspace assignments at the organization level. |
| `TOGGL_CREATE_INVITATION` | Create Invitation | Tool to send invitations to join a Toggl organization. Use when you need to invite users by email to an organization and its workspaces. At least one email and one workspace (or project_invite) are required. |
| `TOGGL_CREATE_ORGANIZATION` | Create Organization | Tool to create a new organization with a default workspace in Toggl Track. Use when initializing a new organization and workspace in one step. The authenticated user becomes the organization owner. |
| `TOGGL_CREATE_PROJECT` | Create Project | Creates a new project in a Toggl workspace. Projects are used to organize time entries and track work for specific initiatives. Required parameters: workspace_id (integer) and name (string). Optional parameters include client assignment, privacy settings, billable status, and time estimates. Note: Some features (custom colors, templates, fixed fees, hourly rates) require a premium Toggl plan. |
| `TOGGL_CREATE_TAG` | Create Tag | Tool to create a new tag in a workspace. Use when you need to add a tag after confirming workspace ID and desired tag name. |
| `TOGGL_CREATE_TIME_ENTRY` | Create Time Entry | Tool to create a new time entry in the specified workspace. Use when you have workspace ID, start time, and client name ready. |
| `TOGGL_CREATE_WORKSPACES_PROJECT_USERS` | Add User to Workspace Project | Tool to add a user to workspace project users. Use when you need to assign a user to a project within a workspace with optional manager privileges and custom rates. |
| `TOGGL_DELETE_CLIENT` | Delete Toggl Client | Tool to delete a client in Toggl. Use when you have confirmed the workspace and client IDs and want to remove a client permanently. |
| `TOGGL_DELETE_GROUP` | Delete Group | Tool to delete a group from a Toggl organization. Use when you need to permanently remove a group and its associated permissions. Requires organization and group IDs. |
| `TOGGL_DELETE_PROJECT_GROUP` | Delete Project Group | Tool to delete a project group from a Toggl workspace. Use when you need to remove a project group permanently. Requires workspace and project group IDs. |
| `TOGGL_DELETE_SUBSCRIPTION` | Delete Subscription | Tool to delete a webhook subscription in Toggl. Use when you want to remove an existing subscription for a specific workspace. |
| `TOGGL_DELETE_TAG` | Delete Tag | Deletes a tag from a Toggl workspace. Requires workspace and tag IDs. Only workspace or organization administrators can delete tags. Returns success status upon deletion. |
| `TOGGL_DISABLE_WEEKLY_REPORT` | Disable Weekly Report | Tool to disable weekly report email notifications. Use when you want to unsubscribe from weekly reports using the code provided in report emails. |
| `TOGGL_EDIT_TIME_ENTRIES` | Bulk Edit Time Entries | Tool to bulk edit multiple time entries in a workspace using JSON Patch operations. Use when you need to update the same field(s) across multiple time entries at once (e.g., changing descriptions, billable status, or project associations). Maximum 100 time entries per request. |
| `TOGGL_GET_ALL_PLANS` | Get All Plans | Tool to retrieve all available Toggl subscription plans and their features. Use when you need to display plan options, compare plans, or check available features for different subscription tiers. |
| `TOGGL_GET_CLIENT_DETAILS` | Get Client Details | Retrieves detailed information about a specific client in Toggl Track by its client ID and workspace ID. Use this tool when you need to: - Get complete client details including name, notes, and metadata - Verify if a client exists in a workspace - Check client archive status, timestamps, or external references - Retrieve integration information for JIRA/Salesforce linked clients |
| `TOGGL_GET_COUNTRIES` | Get Countries | Tool to retrieve all countries supported by Toggl. Returns country details including tax information, default currencies, and postal code requirements. Use when you need to validate country data or retrieve country-specific settings for billing. |
| `TOGGL_GET_COUNTRY_SUBDIVISIONS` | Get Country Subdivisions | Tool to retrieve all subdivisions (states, provinces, regions) for a specific country in Toggl Track. Use when you need to get geographical subdivision data for a country, such as US states or Canadian provinces. |
| `TOGGL_GET_CURRENCIES` | Get Currencies | Tool to retrieve the list of all currencies supported by Toggl Track. Use when you need currency codes and symbols for financial operations or display. |
| `TOGGL_GET_CURRENT_TIME_ENTRY` | Get Current Time Entry | Retrieves the currently running time entry for the authenticated user. Returns null if no timer is active. Use this to check timer status or get details about the active time entry. |
| `TOGGL_GET_EVENT_FILTERS` | Get Event Filters | Retrieve the list of supported event filters for Toggl webhooks. Use this when you need to know which event types are available for webhook subscriptions (e.g., client created, project updated, time entry deleted). |
| `TOGGL_GET_KEYS` | Get JWKS Keys | Retrieves the current JWKS (JSON Web Key Set) keyset used to sign JWT tokens. Use this to obtain public keys for verifying JWT token signatures issued by Toggl. |
| `TOGGL_GET_LIST_CLIENTS` | List Clients | Retrieve a list of clients from a Toggl Track workspace with optional filtering by status and name. Use this tool to: - List all clients in a workspace - Filter clients by active/archived status - Search for clients by name (case-insensitive) - Get client details including IDs, names, timestamps, and permissions By default, only active clients are returned unless specified otherwise. |
| `TOGGL_GET_MY_LOCATION` | Get My Location | Retrieves the authenticated user's last known location information including city, state, country, and coordinates. Use this to determine user's geographic location for timezone or region-specific features. |
| `TOGGL_GET_MY_QUOTA` | Get My Quota | Tool to retrieve API rate limit quota for the authenticated user. Use when you need to check remaining API calls before making further requests or to monitor rate limit status. |
| `TOGGL_GET_ORGANIZATION_DETAILS` | Get Organization Details | Retrieves detailed information about a specific Toggl organization including subscription plan, trial status, user count, and workspace settings. Requires a valid organization ID that the authenticated user has access to. |
| `TOGGL_GET_ORGANIZATION_GROUPS` | Get Organization Groups | Retrieves all groups within a Toggl organization, including group members and workspace assignments. Groups are used to organize users and control access to workspaces. Returns an empty list if no groups exist in the organization. |
| `TOGGL_GET_ORGANIZATION_USERS` | Get Organization Users | Retrieves a list of users belonging to a Toggl organization. Returns detailed information about each user including their email, name, role, workspace memberships, and group memberships. Supports filtering by name/email, status (active/inactive/invited), admin privileges, and pagination. Use this when you need to list organization members or find specific users within an organization. |
| `TOGGL_GET_PROJECT_DETAILS` | Get Project Details | Tool to retrieve details of a specific project. Use after confirming the workspace ID and project ID. |
| `TOGGL_GET_PROJECTS` | Get Projects | Tool to retrieve a list of projects from a Toggl workspace. Use after confirming workspace ID. Returns filtered and paginated projects with optional client details. |
| `TOGGL_GET_PUBLIC_SUBSCRIPTION_PLANS` | Get Public Subscription Plans | Tool to retrieve all publicly available subscription plans from Toggl. Use when you need to display available pricing tiers or plan options to users. |
| `TOGGL_GET_STATUS` | Get Webhooks Status | Tool to retrieve the Toggl Webhooks server status. Use when you need to check if the webhooks service is operational before registering or managing webhook subscriptions. |
| `TOGGL_GET_TAGS` | Get Tags | Retrieve all tags in a Toggl workspace. Returns a list of tags with their IDs, names, and metadata. Use this when you need to list available tags for categorizing time entries or when searching for a specific tag by name. Returns an empty list if the workspace has no tags. |
| `TOGGL_GET_TASKS` | List Tasks | Tool to list tasks in a workspace or within a specific project. |
| `TOGGL_GET_TIME_ENTRIES` | Get Time Entries | Retrieve time entries for the authenticated user with flexible filtering options. Use this tool to: - List all recent time entries (no parameters needed) - Filter entries by date range (start_date + end_date) - Get entries modified since a specific time (since parameter for syncing) - Include project/tag metadata and sharing information Returns comprehensive details including project names, tags, duration, and billable status. |
| `TOGGL_GET_TIME_ENTRY` | Get Time Entry | Tool to retrieve a specific time entry by its ID. Use when you have the entry ID and need its full details. |
| `TOGGL_GET_TIMEZONE_OFFSETS` | Get Timezone Offsets | Tool to retrieve all available timezone offsets from Toggl. Use when you need to display timezone information or validate timezone selection for time entry operations. |
| `TOGGL_GET_TIMEZONES` | Get Timezones | Tool to retrieve all available timezones supported by Toggl Track. Use when you need to validate timezone values or display available timezone options to users. |
| `TOGGL_GET_USER_CLIENTS` | Get User Clients | Retrieves all clients accessible to the authenticated user across all their workspaces. Returns a complete list of client details including workspace associations, archive status, notes, and integration information. Use this to view all clients the current user has access to without needing to specify individual workspace IDs. |
| `TOGGL_GET_USER_PREFERENCES` | Get User Preferences | Retrieves the authenticated user's preferences including timezone, date/time formats, notification settings, and enabled alpha/experimental features. Useful for understanding user display preferences or checking which optional features are available. |
| `TOGGL_GET_USER_PROJECTS` | Get User Projects | Tool to retrieve all projects for the authenticated user. Use after authenticating to list available projects. |
| `TOGGL_GET_USER_TAGS` | Get User Tags | Tool to retrieve tags associated with the current user. Use when you need to list all tags visible to your account across all workspaces, or to get tags that have been created/modified/deleted since a specific date for incremental syncing. |
| `TOGGL_GET_USER_TASKS` | Get User Tasks | Retrieve all tasks across all workspaces accessible to the authenticated user. Returns tasks from projects the user can access, including task details like name, active status, estimated time, and tracked time. Use this to get a comprehensive list of tasks without needing to specify workspace or project IDs. |
| `TOGGL_GET_USER_WORKSPACES` | Get User Workspaces | Tool to retrieve all workspaces the authenticated user belongs to. Use when you need to list accessible workspaces before performing workspace-specific operations. Verify the correct workspace ID from the returned list before use — an incorrect workspace ID will misroute entries and skew reports. |
| `TOGGL_GET_WORKSPACE_DETAILS` | Get Workspace Details | Retrieves comprehensive details and settings for a specific Toggl workspace by ID. Returns workspace configuration including premium/business status, admin permissions, default settings for projects/billing, time tracking preferences, and organizational details. Use this when you need to inspect workspace properties or validate access before performing workspace-specific operations. |
| `TOGGL_GET_WORKSPACE_LOGO` | Get Workspace Logo | Tool to get workspace logo. Use when you need to retrieve the logo associated with a specific workspace. |
| `TOGGL_GET_WORKSPACE_PREFERENCES` | Get Workspace Preferences | Retrieves workspace preferences including the initial pricing plan and whether start/end times are hidden. Use this after obtaining a workspace ID to check workspace-level preference settings. |
| `TOGGL_GET_WORKSPACE_USERS` | Get Workspace Users | Retrieves all users who belong to a specific Toggl workspace. Returns user details including their name, email, admin status, and activity status. Use this to list workspace members, check user roles, or verify user access to a workspace. |
| `TOGGL_PATCH_STOP_TIME_ENTRY` | Stop Time Entry | Tool to stop a running time entry in a workspace. Use when a time entry needs to be ended. |
| `TOGGL_POST_ME_DISABLE_PRODUCT_EMAILS` | Disable Product Emails | Tool to disable product emails for the authenticated user using a disable code. Use when the user wants to unsubscribe from Toggl product emails using a code from an unsubscribe link. |
| `TOGGL_PUT_UPDATE_TAG` | Update Tag | Tool to update an existing tag in a specified workspace. Use after confirming the workspace_id and tag_id when renaming a tag. Example: rename tag 'urgent' to 'high_priority'. |
| `TOGGL_SEND_DEMO_EMAIL` | Send Demo Email | Tool to send a demo request email through Toggl's system. Use when someone wants to request a product demo. |
| `TOGGL_SEND_EMAIL_CONTACT` | Send Email to Contact | Tool to send an email to a contact via Toggl's smail service. Use when you need to send a message to a specific contact by providing their email, name, and message content. |
| `TOGGL_SEND_SMAIL_MEET` | Send Smail Meet | Tool to send an email for meet. Use when you need to send a meet invitation email to a specific recipient with a location. |
| `TOGGL_UPDATE_CLIENT` | Update Client | Updates an existing client in a Toggl workspace. Use this to modify a client's name or notes. Note: The Toggl API requires the 'name' field when updating any client property. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Toggl MCP server is an implementation of the Model Context Protocol that connects your AI agent to Toggl. It provides structured and secure access so your agent can perform Toggl operations on your behalf through a secure, permission-based interface.
With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster.

## Step-by-step Guide

### 1. Prerequisites

Before you begin, make sure you have:
- Node.js and npm installed
- A Composio account with API key
- An OpenAI API key

### 1. Getting API Keys for OpenAI and Composio

OpenAI API Key
- Go to the [OpenAI dashboard](https://platform.openai.com/settings/organization/api-keys) and create an API key. You'll need credits to use the models, or you can connect to another model provider.
- Keep the API key safe.
Composio API Key
- Log in to the [Composio dashboard](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs).
- Navigate to your API settings and generate a new API key.
- Store this key securely as you'll need it for authentication.

### 2. Install required dependencies

First, install the necessary packages for your project.
What you're installing:
- @ai-sdk/openai: Vercel AI SDK's OpenAI provider
- @ai-sdk/mcp: MCP client for Vercel AI SDK
- @composio/core: Composio SDK for tool integration
- ai: Core Vercel AI SDK
- dotenv: Environment variable management
```bash
npm install @ai-sdk/openai @ai-sdk/mcp @composio/core ai dotenv
```

### 3. Set up environment variables

Create a .env file in your project root.
What's needed:
- OPENAI_API_KEY: Your OpenAI API key for GPT model access
- COMPOSIO_API_KEY: Your Composio API key for tool access
- COMPOSIO_USER_ID: A unique identifier for the user session
```bash
OPENAI_API_KEY=your_openai_api_key_here
COMPOSIO_API_KEY=your_composio_api_key_here
COMPOSIO_USER_ID=your_user_id_here
```

### 4. Import required modules and validate environment

What's happening:
- We're importing all necessary libraries including Vercel AI SDK's OpenAI provider and Composio
- The dotenv/config import automatically loads environment variables
- The MCP client import enables connection to Composio's tool server
```typescript
import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Composio } from "@composio/core";
import * as readline from "readline";
import { streamText, type ModelMessage, stepCountIs } from "ai";
import { createMCPClient } from "@ai-sdk/mcp";

const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!process.env.OPENAI_API_KEY) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({
  apiKey: composioAPIKey,
});
```

### 5. Create Tool Router session and initialize MCP client

What's happening:
- We're creating a Tool Router session that gives your agent access to Toggl tools
- The create method takes the user ID and specifies which toolkits should be available
- The returned mcp object contains the URL and authentication headers needed to connect to the MCP server
- This session provides access to all Toggl-related tools through the MCP protocol
```typescript
async function main() {
  // Create a tool router session for the user
  const session = await composio.create(composioUserID!, {
    toolkits: ["toggl"],
  });

  const mcpUrl = session.mcp.url;
```

### 6. Connect to MCP server and retrieve tools

What's happening:
- We're creating an MCP client that connects to our Composio Tool Router session via HTTP
- The mcp.url provides the endpoint, and mcp.headers contains authentication credentials
- The type: "http" is important - Composio requires HTTP transport
- tools() retrieves all available Toggl tools that the agent can use
```typescript
const mcpClient = await createMCPClient({
  transport: {
    type: "http",
    url: mcpUrl,
    headers: session.mcp.headers, // Authentication headers for the Composio MCP server
  },
});

const tools = await mcpClient.tools();
```

### 7. Initialize conversation and CLI interface

What's happening:
- We initialize an empty messages array to maintain conversation history
- A readline interface is created to accept user input from the command line
- Instructions are displayed to guide the user on how to interact with the agent
```typescript
let messages: ModelMessage[] = [];

console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
console.log(
  "Ask any questions related to toggl, like summarize my last 5 emails, send an email, etc... :)))\n",
);

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  prompt: "> ",
});

rl.prompt();
```

### 8. Handle user input and stream responses with real-time tool feedback

What's happening:
- We use streamText instead of generateText to stream responses in real-time
- toolChoice: "auto" allows the model to decide when to use Toggl tools
- stopWhen: stepCountIs(10) allows up to 10 steps for complex multi-tool operations
- onStepFinish callback displays which tools are being used in real-time
- We iterate through the text stream to create a typewriter effect as the agent responds
- The complete response is added to conversation history to maintain context
- Errors are caught and displayed with helpful retry suggestions
```typescript
rl.on("line", async (userInput: string) => {
  const trimmedInput = userInput.trim();

  if (["exit", "quit", "bye"].includes(trimmedInput.toLowerCase())) {
    console.log("\nGoodbye!");
    rl.close();
    process.exit(0);
  }

  if (!trimmedInput) {
    rl.prompt();
    return;
  }

  messages.push({ role: "user", content: trimmedInput });
  console.log("\nAgent is thinking...\n");

  try {
    const stream = streamText({
      model: openai("gpt-5"),
      messages,
      tools,
      toolChoice: "auto",
      stopWhen: stepCountIs(10),
      onStepFinish: (step) => {
        for (const toolCall of step.toolCalls) {
          console.log(`[Using tool: ${toolCall.toolName}]`);
          }
          if (step.toolCalls.length > 0) {
            console.log(""); // Add space after tool calls
          }
        },
      });

      for await (const chunk of stream.textStream) {
        process.stdout.write(chunk);
      }

      console.log("\n\n---\n");

      // Get final result for message history
      const response = await stream.response;
      if (response?.messages?.length) {
        messages.push(...response.messages);
      }
    } catch (error) {
      console.error("\nAn error occurred while talking to the agent:");
      console.error(error);
      console.log(
        "\nYou can try again or restart the app if it keeps happening.\n",
      );
    } finally {
      rl.prompt();
    }
  });

  rl.on("close", async () => {
    await mcpClient.close();
    console.log("\n👋 Session ended.");
    process.exit(0);
  });
}

main().catch((err) => {
  console.error("Fatal error:", err);
  process.exit(1);
});
```

## Complete Code

```typescript
import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Composio } from "@composio/core";
import * as readline from "readline";
import { streamText, type ModelMessage, stepCountIs } from "ai";
import { createMCPClient } from "@ai-sdk/mcp";

const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!process.env.OPENAI_API_KEY) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({
  apiKey: composioAPIKey,
});

async function main() {
  // Create a tool router session for the user
  const session = await composio.create(composioUserID!, {
    toolkits: ["toggl"],
  });

  const mcpUrl = session.mcp.url;

  const mcpClient = await createMCPClient({
    transport: {
      type: "http",
      url: mcpUrl,
      headers: session.mcp.headers, // Authentication headers for the Composio MCP server
    },
  });

  const tools = await mcpClient.tools();

  let messages: ModelMessage[] = [];

  console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
  console.log(
    "Ask any questions related to toggl, like summarize my last 5 emails, send an email, etc... :)))\n",
  );

  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: "> ",
  });

  rl.prompt();

  rl.on("line", async (userInput: string) => {
    const trimmedInput = userInput.trim();

    if (["exit", "quit", "bye"].includes(trimmedInput.toLowerCase())) {
      console.log("\nGoodbye!");
      rl.close();
      process.exit(0);
    }

    if (!trimmedInput) {
      rl.prompt();
      return;
    }

    messages.push({ role: "user", content: trimmedInput });
    console.log("\nAgent is thinking...\n");

    try {
      const stream = streamText({
        model: openai("gpt-5"),
        messages,
        tools,
        toolChoice: "auto",
        stopWhen: stepCountIs(10),
        onStepFinish: (step) => {
          for (const toolCall of step.toolCalls) {
            console.log(`[Using tool: ${toolCall.toolName}]`);
          }
          if (step.toolCalls.length > 0) {
            console.log(""); // Add space after tool calls
          }
        },
      });

      for await (const chunk of stream.textStream) {
        process.stdout.write(chunk);
      }

      console.log("\n\n---\n");

      // Get final result for message history
      const response = await stream.response;
      if (response?.messages?.length) {
        messages.push(...response.messages);
      }
    } catch (error) {
      console.error("\nAn error occurred while talking to the agent:");
      console.error(error);
      console.log(
        "\nYou can try again or restart the app if it keeps happening.\n",
      );
    } finally {
      rl.prompt();
    }
  });

  rl.on("close", async () => {
    await mcpClient.close();
    console.log("\n👋 Session ended.");
    process.exit(0);
  });
}

main().catch((err) => {
  console.error("Fatal error:", err);
  process.exit(1);
});
```

## Conclusion

You've successfully built a Toggl agent using the Vercel AI SDK with streaming capabilities! This implementation provides a powerful foundation for building AI applications with natural language interfaces and real-time feedback.
Key features of this implementation:
- Real-time streaming responses for a better user experience with typewriter effect
- Live tool execution feedback showing which tools are being used as the agent works
- Dynamic tool loading through Composio's Tool Router with secure authentication
- Multi-step tool execution with configurable step limits (up to 10 steps)
- Comprehensive error handling for robust agent execution
- Conversation history maintenance for context-aware responses
You can extend this further by adding custom error handling, implementing specific business logic, or integrating additional Composio toolkits to create multi-app workflows.

## How to build Toggl MCP Agent with another framework

- [OpenAI Agents SDK](https://composio.dev/toolkits/toggl/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/toggl/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/toggl/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/toggl/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/toggl/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/toggl/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/toggl/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/toggl/framework/cli)
- [Google ADK](https://composio.dev/toolkits/toggl/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/toggl/framework/langchain)
- [Mastra AI](https://composio.dev/toolkits/toggl/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/toggl/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/toggl/framework/crew-ai)

## Related Toolkits

- [Google Sheets](https://composio.dev/toolkits/googlesheets) - Google Sheets is a cloud-based spreadsheet tool for real-time collaboration and data analysis. It lets teams work together from anywhere, updating information instantly.
- [Notion](https://composio.dev/toolkits/notion) - Notion is a collaborative workspace for notes, docs, wikis, and tasks. It streamlines team knowledge, project tracking, and workflow customization in one place.
- [Airtable](https://composio.dev/toolkits/airtable) - Airtable combines the flexibility of spreadsheets with the power of a database for easy project and data management. Teams use Airtable to organize, track, and collaborate with custom views and automations.
- [Asana](https://composio.dev/toolkits/asana) - Asana is a collaborative work management platform for teams to organize and track projects. It streamlines teamwork, boosts productivity, and keeps everyone aligned on goals.
- [Google Tasks](https://composio.dev/toolkits/googletasks) - Google Tasks is a to-do list and task management tool integrated into Gmail and Google Calendar. It helps you organize, track, and complete tasks across your Google ecosystem.
- [Linear](https://composio.dev/toolkits/linear) - Linear is a modern issue tracking and project planning tool for fast-moving teams. It helps streamline workflows, organize projects, and boost productivity.
- [Jira](https://composio.dev/toolkits/jira) - Jira is Atlassian’s platform for bug tracking, issue tracking, and agile project management. It helps teams organize work, prioritize tasks, and deliver projects efficiently.
- [Clickup](https://composio.dev/toolkits/clickup) - ClickUp is an all-in-one productivity platform for managing tasks, docs, goals, and team collaboration. It streamlines project workflows so teams can work smarter and stay organized in one place.
- [Monday](https://composio.dev/toolkits/monday) - Monday.com is a customizable work management platform for project planning and collaboration. It helps teams organize tasks, automate workflows, and track progress in real time.
- [Addressfinder](https://composio.dev/toolkits/addressfinder) - Addressfinder is a data quality platform for verifying addresses, emails, and phone numbers. It helps you ensure accurate customer and contact data every time.
- [Agiled](https://composio.dev/toolkits/agiled) - Agiled is an all-in-one business management platform for CRM, projects, and finance. It helps you streamline workflows, consolidate client data, and manage business processes in one place.
- [Ascora](https://composio.dev/toolkits/ascora) - Ascora is a cloud-based field service management platform for service businesses. It streamlines scheduling, invoicing, and customer operations in one place.
- [Basecamp](https://composio.dev/toolkits/basecamp) - Basecamp is a project management and team collaboration tool by 37signals. It helps teams organize tasks, share files, and communicate efficiently in one place.
- [Beeminder](https://composio.dev/toolkits/beeminder) - Beeminder is an online goal-tracking platform that uses monetary pledges to keep you motivated. Stay accountable and hit your targets with real financial incentives.
- [Boxhero](https://composio.dev/toolkits/boxhero) - Boxhero is a cloud-based inventory management platform for SMBs, offering real-time updates, barcode scanning, and team collaboration. It helps businesses streamline stock tracking and analytics for smarter inventory decisions.
- [Breathe HR](https://composio.dev/toolkits/breathehr) - Breathe HR is cloud-based HR software for SMEs to manage employee data, absences, and performance. It simplifies HR admin, making it easy to keep employee records accurate and up to date.
- [Breeze](https://composio.dev/toolkits/breeze) - Breeze is a project management platform designed to help teams plan, track, and collaborate on projects. It streamlines workflows and keeps everyone on the same page.
- [Bugherd](https://composio.dev/toolkits/bugherd) - Bugherd is a visual feedback and bug tracking tool for websites. It helps teams and clients report website issues directly on live sites for faster fixes.
- [Canny](https://composio.dev/toolkits/canny) - Canny is a platform for managing customer feedback and feature requests. It helps teams prioritize product decisions based on real user insights.
- [Chmeetings](https://composio.dev/toolkits/chmeetings) - Chmeetings is a church management platform for events, members, donations, and volunteers. It streamlines church operations and improves community engagement.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Toggl MCP?

With a standalone Toggl MCP server, the agents and LLMs can only access a fixed set of Toggl tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Toggl and many other apps based on the task at hand, all through a single MCP endpoint.

### Can I use Tool Router MCP with Vercel AI SDK v6?

Yes, you can. Vercel AI SDK v6 fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Toggl tools.

### Can I manage the permissions and scopes for Toggl while using Tool Router?

Yes, absolutely. You can configure which Toggl scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

### How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Toggl data and credentials are handled as safely as possible.

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[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)