# LINE

```json
{
  "name": "LINE",
  "slug": "line",
  "url": "https://composio.dev/toolkits/line",
  "markdown_url": "https://composio.dev/toolkits/line.md",
  "logo_url": "https://logos.composio.dev/api/line",
  "categories": [
    "collaboration & communication"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-08-09T06:42:25.739Z"
}
```

![LINE logo](https://logos.composio.dev/api/line)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with LINE MCP or direct API to send messages, manage audiences, query user interactions, and configure rich menus through natural language.

## Summary

LINE is a messaging platform and Official Account service for customer chat and broadcasts.
Use it to reach customers in real time with rich, branded conversations.

## Categories

- collaboration & communication

## Toolkit Details

- Tools: 13

## Images

- Logo: https://logos.composio.dev/api/line

## Authentication

- **Api Key**
  - Type: `api_key`
  - Description: Api Key authentication for LINE.
  - Setup:
    - Configure Api Key credentials for LINE.
    - Use the credentials when creating an auth config in Composio.

## Suggested Prompts

- Send coupon broadcast to LINE followers
- Create rich menu for promotions
- List LINE audience groups by size

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `LINE_CREATE_RICH_MENU` | Create Rich Menu | Create a rich-menu definition and return its ID. Creation alone does not display it: upload an image, then set it as default or link it to a user. |
| `LINE_CREATE_RICH_MENU_WITH_IMAGE` | Create Rich Menu with Image | Create a rich-menu definition and upload its JPEG or PNG image in one call. If image upload fails, the newly created definition is deleted automatically. The finished menu must still be set as default or linked to a user to display. |
| `LINE_DELETE_RICH_MENU` | Delete Rich Menu | Permanently delete a rich menu by ID. Delete only a menu the caller owns or explicitly intends to remove. |
| `LINE_DOWNLOAD_MESSAGE_CONTENT_PREVIEW` | Download Message Content Preview | Download LINE's reduced-size preview image for a retained image or video message whose contentProvider.type is line. |
| `LINE_GET_MESSAGE_DELIVERY_COUNT` | Get Message Delivery Count | Get the number of reply, push, multicast, or broadcast messages sent on one UTC+9 calendar date. A result can be unready, unavailable_for_privacy, or out_of_service instead of containing a count. |
| `LINE_GET_RICH_MENU` | Get Rich Menu | Get one Messaging API rich-menu definition by ID, including its canvas, tappable areas, and actions. |
| `LINE_LINK_OR_UNLINK_USER_RICH_MENU` | Link or Unlink User Rich Menu | Link or unlink a per-user rich menu. WARNING: LINE can return HTTP 200 even when nothing changed for a nonexistent, deleted, blocked, non-friend, or cross-channel user; success confirms request acceptance, not the assignment effect. |
| `LINE_LIST_CHAT_MEMBER_IDS` | List Chat Member IDs | Return one page of member user IDs for a group or legacy room containing the bot. Requires a verified or premium LINE Official Account; room applies only to legacy multi-person chats. |
| `LINE_LIST_FOLLOWER_IDS` | List Follower IDs | Return one page of user IDs for friends of the LINE Official Account. This endpoint requires a verified or premium LINE Official Account and excludes blockers, deleted users, and users without profile consent. |
| `LINE_LIST_RICH_MENUS` | List Rich Menus | List all rich menus created through the Messaging API. Menus created in LINE Official Account Manager are not included. |
| `LINE_MARK_MESSAGES_AS_READ` | Mark Messages as Read | Mark all messages through a webhook-issued read token as read. The token must have been received by this exact bot; this operation cannot be undone. |
| `LINE_SET_OR_CLEAR_DEFAULT_RICH_MENU` | Set or Clear Default Rich Menu | Set or clear the Messaging API default rich menu. Setting requires an image-backed rich menu; clearing does not delete the menu and does not clear a default managed in LINE Official Account Manager. |
| `LINE_UPLOAD_RICH_MENU_IMAGE` | Upload Rich Menu Image | Upload a JPEG or PNG image for a rich menu. An image cannot be replaced for the same rich-menu ID; create a new menu to use another image. |

## Supported Triggers

None listed.

## Installation and MCP Setup

### Path 1: SDK Installation

#### Path 1, Step 1: Install Composio

Install the Composio SDK
```python
pip install composio_openai
```

```typescript
npm install @composio/openai
```

#### Path 1, Step 2: Initialize Composio and Create Tool Router Session

Import and initialize Composio client, then create a Tool Router session
```python
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
openai = OpenAI()
session = composio.create(user_id='your-user-id')
```

```typescript
import OpenAI from 'openai';
import { Composio } from '@composio/core';
import { OpenAIResponsesProvider } from '@composio/openai';

const composio = new Composio({
  provider: new OpenAIResponsesProvider(),
});
const openai = new OpenAI({});
const session = await composio.create('your-user-id');
```

#### Path 1, Step 3: Execute LINE Tools via Tool Router with Your Agent

Get tools from Tool Router session and execute LINE actions with your Agent
```python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'Send a LINE push message to user U1234567890abcdef saying Your order is ready for pickup.'
  }]
)
result = composio.provider.handle_tool_calls(
  response=response,
  user_id='your-user-id'
)
print(result)
```

```typescript
const tools = session.tools;
const response = await openai.responses.create({
  model: 'gpt-4.1',
  tools: tools,
  input: [{
    role: 'user',
    content: 'Send a LINE push message to user U1234567890abcdef saying Your order is ready for pickup.'
  }],
});
const result = await composio.provider.handleToolCalls(
  'your-user-id',
  response.output
);
console.log(result);
```

### Path 2: MCP Server Setup

#### Path 2, Step 1: Install Composio

Install the Composio SDK for Python or TypeScript
```python
pip install composio claude-agent-sdk
```

```typescript
npm install @composio/core ai @ai-sdk/openai @ai-sdk/mcp
```

#### Path 2, Step 2: Initialize Client and Create Tool Router Session

Import and initialize the Composio client, then create a Tool Router session for LINE
```python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url
```

```typescript
import { Composio } from '@composio/core';

const composio = new Composio({ apiKey: 'your-api-key' });
const session = await composio.create('your-user-id');
console.log(`Tool Router session created: ${session.mcp.url}`);
```

#### Path 2, Step 3: Connect to AI Agent

Use the MCP server with your AI agent (Anthropic Claude or Mastra)
```python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to LINE tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Create a LINE rich menu named Weekend Promo that links users to https://example.com/sale.')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText } from 'ai';

const client = await createMCPClient({
  transport: {
    type: 'http',
    url: session.mcp.url,
    headers: {
      'x-api-key': 'your-composio-api-key',
    },
  },
});

const tools = await client.tools();
const { text } = await generateText({
  model: openai('gpt-4o'),
  tools,
  messages: [{
    role: 'user',
    content: 'Create a LINE rich menu named Weekend Promo that links users to https://example.com/sale.'
  }],
  maxSteps: 5,
});

console.log(`Agent: ${text}`);
```

## Why Use Composio?

### 1. AI Native LINE Integration

- Supports both LINE MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable Messaging API execution
- Rich coverage for sending messages, managing audiences, and working with rich menus

### 2. Secure API Key Auth

- Store LINE channel access tokens and API keys securely instead of hard-coding them
- Central place to manage, scope, and revoke LINE access per user or environment
- Composio handles secure credential storage and API request handling for you

### 3. Agent Optimized Design

- LINE tools are tuned for agents, so message, audience, and rich menu actions are easier to call correctly
- Tools are improved using real error and success rates to boost reliability over time
- Comprehensive execution logs so you always know what ran, when, and on whose behalf

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access LINE
- Scoped, least privilege access to LINE Official Account resources
- Full audit trail of agent actions to support review and compliance

## Use LINE with any AI Agent Framework

Choose a framework you want to connect LINE with:

- [ChatGPT Work](https://composio.dev/toolkits/line/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/line/framework/claude-cowork)

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## Frequently Asked Questions

### Do I need my own developer credentials to use LINE with Composio?

Yes, LINE requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

### Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. [Learn more](https://docs.composio.dev/tool-router/overview).

### Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. [Learn more](https://trust.composio.dev).

### What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

---
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