# Reply

```json
{
  "name": "Reply",
  "slug": "reply",
  "url": "https://composio.dev/toolkits/reply",
  "markdown_url": "https://composio.dev/toolkits/reply.md",
  "logo_url": "https://logos.composio.dev/api/reply",
  "categories": [
    "sales & customer support"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-05-12T10:23:54.555Z"
}
```

![Reply logo](https://logos.composio.dev/api/reply)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Reply MCP or direct API to automate email outreach, send and track campaigns, monitor reply rates, and organize leads—all through natural language.

## Summary

Reply.io is a sales engagement platform for automating multichannel outreach and managing email campaigns. It helps sales teams boost productivity by tracking responses and centralizing campaign performance.

## Categories

- sales & customer support

## Toolkit Details

- Tools: 21

## Images

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

## Authentication

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

## Suggested Prompts

- List all active email campaigns this week
- Get contacts in my 'Leads Q3' list
- Show all available email templates
- Retrieve blacklisted domains and emails

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `REPLY_CREATE_LIST` | Create Personal List | Tool to add a new personal list on the People page. Use when you need to organize contacts into a custom list. |
| `REPLY_DELETE_EMAIL_ACCOUNT` | Delete Email Account | Tool to delete a specific email account. Use when you need to remove an existing email account identified by its ID. |
| `REPLY_DELETE_LIST_BY_ID` | Delete List By ID | Tool to delete a list by its ID. Use when you need to remove a personal list you own. |
| `REPLY_DELETE_SEQUENCE` | Delete Sequence | Tool to delete a sequence. Use after confirming the sequence exists to remove it permanently. |
| `REPLY_DELETE_USER` | Delete User | Tool to delete a user. Use after confirming the user exists to remove them permanently. |
| `REPLY_GENERATE_ULID` | Generate ULID | Generate ULID |
| `REPLY_GET_ALL_LISTS` | Get All Lists | Tool to retrieve all available people lists. Use when you need to list all lists in your Reply account. |
| `REPLY_GET_BLACKLIST_ALL` | Get full blacklist of domains and emails | Tool to retrieve the full list of blacklisted domains and emails. Use after confirming updates to the blacklist when you need a complete view. |
| `REPLY_GET_CAMPAIGN_SCHEDULES_ALL` | Get all campaign schedules | Retrieves all campaign schedules from Reply.io, including the default schedule and any user-created schedules. Each schedule contains timezone settings, daily timing configurations (mainTimings), and follow-up timings. Use this to view available schedules before assigning one to a campaign or to audit existing schedule configurations. |
| `REPLY_GET_CAMPAIGNS_FOR_CONTACT` | Get Campaigns For Contact | Tool to retrieve campaigns a contact belongs to by contact ID. Use when you need to list all sequences (campaigns) associated with a specific contact. |
| `REPLY_GET_CONTACTS_IN_LIST_BY_ID` | Get Contacts in List by ID | Tool to retrieve contacts in a specific personal list. Use after obtaining the list ID when you need a paginated set of contacts for that list. |
| `REPLY_GET_LIST_BY_ID` | Get List by ID | Tool to return a specific people list by its ID. Use after you know the list ID and need its details. |
| `REPLY_GET_TEMPLATES_LIST` | Get templates list | Retrieves all email templates from Reply.io, including user-created, team-shared, organization-wide, and community templates. Use this to browse available templates before sending emails or creating campaigns. No parameters required - returns all accessible templates for the authenticated user. |
| `REPLY_LIST_CAMPAIGNS` | List Campaigns | Tool to list all campaigns (sequences). Use when you need a paginated list of campaigns. |
| `REPLY_LIST_CONTACTS_BASIC` | List Contacts Basic | Tool to list contacts. Use when verifying API access and gathering contact IDs. |
| `REPLY_LIST_EMAIL_ACCOUNTS` | Reply.io List Email Accounts | Tool to list all email accounts. Use when you need to retrieve email accounts page by page. |
| `REPLY_MARK_CONTACT_AS_FINISHED` | Mark Contact As Finished | Marks a contact (by email) or all contacts under a domain as finished in all Reply.io campaigns. Use this tool to stop outreach for contacts who have been successfully engaged or should no longer receive campaign messages. - When using 'email': The specific contact must exist and be enrolled in at least one campaign. - When using 'domain': Marks all contacts with that email domain as finished (succeeds even if no contacts match). Note: Provide exactly one of 'email' or 'domain', not both. |
| `REPLY_MARK_CONTACT_AS_REPLIED` | Mark Contact as Replied | Tool to mark a contact as replied in all campaigns by email or domain. Use after confirming the contact has responded. |
| `REPLY_MOVE_CONTACTS_TO_LISTS` | Move Contacts to Lists | Tool to move one or more contacts to specified lists. Use when reorganizing contacts across lists after verifying contact and list IDs. |
| `REPLY_REMOVE_DOMAIN_FROM_BLACKLIST` | Remove Domain from Blacklist | Tool to remove the specified domain from the blacklist. Use when you need to allow sending to that domain again. |
| `REPLY_SEARCH_CONTACTS` | Search Contacts by Email | Tool to search contacts by email. Use when you need to find existing contact IDs for update tests. |

## 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 Reply Tools via Tool Router with Your Agent

Get tools from Tool Router session and execute Reply actions with your Agent
```python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'List all active email campaigns running this week'
  }]
)
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: 'List all active email campaigns running this week'
  }],
});
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 and Claude Agent SDK
```python
pip install composio claude-agent-sdk
```

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

#### Path 2, Step 2: Create Tool Router Session

Initialize the Composio client and create a Tool Router session
```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' });

console.log("Creating Tool Router session...");
const { mcp } = await composio.create('your-user-id');
console.log(`Tool Router session created: ${mcp.url}`);
```

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

Use the MCP server with your AI agent
```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 Reply tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Get all campaign schedules for my Reply campaigns')
        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, stepCountIs } from 'ai';

const client = await createMCPClient({
  transport: {
    type: 'http',
    url: 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: 'Get all campaign schedules for my Reply campaigns' }],
  stopWhen: stepCountIs(5)
});

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

## Why Use Composio?

### 1. AI Native Reply Integration

- Supports both Reply MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for reading, writing, and querying your Reply data

### 2. Managed Auth

- Built-in API key management with automatic rotation
- Central place to manage, scope, and revoke Reply access
- Per user and per environment credentials instead of hard-coded keys

### 3. Agent Optimized Design

- Tools are tuned using real error and success rates to improve 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 Reply
- Scoped, least privilege access to Reply resources
- Full audit trail of agent actions to support review and compliance

## Use Reply with any AI Agent Framework

Choose a framework you want to connect Reply with:

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

## Related Toolkits

- [Aeroleads](https://composio.dev/toolkits/aeroleads) - Aeroleads is a B2B lead generation platform for finding business emails and phone numbers. Grow your sales pipeline faster with powerful prospecting tools.
- [Autobound](https://composio.dev/toolkits/autobound) - Autobound is an AI-powered sales engagement platform that crafts hyper-personalized outreach and insights. It helps sales teams boost response rates and close more deals through tailored content and recommendations.
- [Better proposals](https://composio.dev/toolkits/better_proposals) - Better Proposals is a web-based tool for crafting and sending professional proposals. It helps teams impress clients and close deals faster with slick, easy-to-use templates.
- [Bidsketch](https://composio.dev/toolkits/bidsketch) - Bidsketch is a proposal software that helps businesses create professional proposals quickly and efficiently. It streamlines the proposal process, saving time while boosting client win rates.
- [Bolna](https://composio.dev/toolkits/bolna) - Bolna is an AI platform for building conversational voice agents. It helps businesses automate support and streamline interactions through natural, voice-powered conversations.
- [Botsonic](https://composio.dev/toolkits/botsonic) - Botsonic is a no-code AI chatbot builder for easily creating and deploying chatbots to your website. It empowers businesses to offer conversational experiences without writing code.
- [Botstar](https://composio.dev/toolkits/botstar) - BotStar is a comprehensive chatbot platform for designing, developing, and training chatbots visually on Messenger and websites. It helps businesses automate conversations and customer interactions without coding.
- [Callerapi](https://composio.dev/toolkits/callerapi) - CallerAPI is a white-label caller identification platform for branded caller ID and fraud prevention. It helps businesses boost customer trust while stopping spam, fraud, and robocalls.
- [Callingly](https://composio.dev/toolkits/callingly) - Callingly is a lead response management platform that automates immediate call and text follow-ups with new leads. It helps sales teams boost response speed and close more deals by connecting seamlessly with CRMs and lead sources.
- [Callpage](https://composio.dev/toolkits/callpage) - Callpage is a lead capture platform that lets businesses instantly connect with website visitors via callback. It boosts lead generation and increases your sales conversion rates.
- [Clearout](https://composio.dev/toolkits/clearout) - Clearout is an AI-powered service for verifying, finding, and enriching email addresses. It boosts deliverability and helps you discover high-quality leads effortlessly.
- [Clientary](https://composio.dev/toolkits/clientary) - Clientary is a platform for managing clients, invoices, projects, proposals, and more. It streamlines client work and saves you serious admin time.
- [Convolo ai](https://composio.dev/toolkits/convolo_ai) - Convolo ai is an AI-powered communications platform for sales teams. It accelerates lead response and improves conversion rates by automating calls and integrating workflows.
- [Delighted](https://composio.dev/toolkits/delighted) - Delighted is a customer feedback platform based on the Net Promoter System®. It helps you quickly gather, track, and act on customer sentiment.
- [Emelia](https://composio.dev/toolkits/emelia) - Emelia is an all-in-one B2B prospecting platform for cold-email, LinkedIn outreach, and prospect research. It streamlines outbound campaigns so you can find, engage, and warm up leads faster.
- [Findymail](https://composio.dev/toolkits/findymail) - Findymail is a B2B data provider offering verified email and phone contacts for sales prospecting. Enhance outreach with automated exports, email verification, and CRM enrichment.
- [Freshdesk](https://composio.dev/toolkits/freshdesk) - Freshdesk is customer support software with ticketing and automation tools. It helps teams streamline helpdesk operations for faster, better customer support.
- [Fullenrich](https://composio.dev/toolkits/fullenrich) - FullEnrich is a B2B contact enrichment platform that aggregates emails and phone numbers from 15+ data vendors. Instantly find and verify lead contact data to boost your outreach.
- [Gatherup](https://composio.dev/toolkits/gatherup) - GatherUp is a customer feedback and online review management platform. It helps businesses boost their reputation by streamlining how they collect and manage customer feedback.
- [Getprospect](https://composio.dev/toolkits/getprospect) - Getprospect is a business email discovery tool with LinkedIn integration. Use it to quickly find and verify professional email addresses.

## Frequently Asked Questions

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

Yes, Reply 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.

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