Attio with Claude Agent SDK

How to integrate Attio MCP with Claude Agent SDK

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Introduction Also integrate Attio with TL;DR What is Claude Agent SDK What is the Attio MCP server Supported Tools & Triggers Creating MCP Server - Stand-alone vs Composio SDK Step-by-step Guide Complete Code Conclusion How to build Attio MCP Agent with another framework Explore Other Toolkits FAQ

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Introduction

This guide walks you through connecting Attio to the Claude Agent SDK using the Composio tool router. By the end, you'll have a working Attio agent that can add a meeting note to john smith’s record, find all companies added this week, list recent notes for acme corp through natural language commands.

This guide will help you understand how to give your Claude Agent SDK agent real control over a Attio account through Composio's Attio MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

Also integrate Attio with

ChatGPT Antigravity OpenAI Agents SDK Claude Code Claude Cowork Codex OpenCode Cursor VS Code OpenClaw Hermes CLI Google ADK LangChain Vercel AI SDK Mastra AI LlamaIndex CrewAI

TL;DR

Here's what you'll learn:

Get and set up your Claude/Anthropic and Composio API keys
Install the necessary dependencies
Initialize Composio and create a Tool Router session for Attio
Configure an AI agent that can use Attio as a tool
Run a live chat session where you can ask the agent to perform Attio operations

What is Claude Agent SDK?

The Claude Agent SDK is Anthropic's official framework for building AI agents powered by Claude. It provides a streamlined interface for creating agents with MCP tool support and conversation management.

Key features include:

Native MCP Support: Built-in support for Model Context Protocol servers
Permission Modes: Control tool execution permissions
Streaming Responses: Real-time response streaming for interactive applications
Context Manager: Clean async context management for sessions

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

The Attio MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Attio account. It provides structured and secure access to your team’s relationship and workflow data, so your agent can perform actions like creating records, managing notes, searching your CRM, and organizing lists on your behalf.

Automated record management: Effortlessly create, update, or permanently delete records for people, companies, deals, and more in your Attio workspace.
Smart note taking and retrieval: Let your agent create, list, or delete notes attached to any record, keeping important context and meeting details organized for your team.
Powerful object and list navigation: Retrieve and explore all available objects or lists within your workspace, making it easy for your AI to understand and organize your CRM structure.
Advanced record search and filtering: Find specific CRM records either by unique ID or by searching with custom attributes, ensuring your agent surfaces the right data when you need it.
Comprehensive workspace insight: Get detailed information about object types and their attributes, so your AI-powered workflows always use the right fields and relationships.

Supported Tools & Triggers

Tools

Assert Company (Create or Update)Creates or updates a company record in Attio using a unique attribute to search for existing companies.

Assert Person RecordTool to create or update person records using a unique attribute to search for existing people.

Assert User Record (Create or Update)Creates or updates a user record in Attio using a unique attribute to search for existing users.

Assert Workspace (Create or Update)Creates or updates a workspace record in Attio using a unique attribute to search for existing workspaces.

Create AttributeTool to create a new attribute on an object or list in Attio.

Create CommentTool to create a new comment on a thread, record, or list entry in Attio.

Create CompanyCreates a new company record in Attio.

Create Deal RecordTool to create a new deal record in Attio.

Create ListTool to create a new list in Attio.

Create NoteThis tool creates a new note on a given record in Attio.

Create ObjectTool to create a new custom object in your Attio workspace.

Create PersonCreates a new person record in Attio.

Create RecordThis tool creates a new record in Attio for a specified object type (people, companies, deals, users, workspaces, etc.

Create Select OptionTool to add a new select option to a select or multiselect attribute in Attio.

Create StatusTool to add a new status to a status attribute on either an object or a list.

Create TaskTool to create a new task in Attio.

Create User RecordCreates a new user record in Attio.

Create WebhookTool to create a webhook and subscribe to events in Attio.

Create Workspace RecordCreates a new workspace record in Attio.

Delete CommentTool to delete a comment by its comment_id.

Delete CompanyTool to delete a company record from Attio by its record_id.

Delete DealTool to delete a deal record from Attio by its record_id.

Delete List EntryTool to delete a single list entry by its entry_id in Attio.

Delete NoteThis tool allows users to delete a specific note in Attio by its ID.

Delete PersonTool to delete a person record from Attio by its record_id.

Delete RecordThis tool allows you to delete a record from Attio permanently.

Delete TaskTool to delete a task by its task_id.

Delete UserTool to delete a user record from Attio by its record_id.

Delete WebhookTool to delete a webhook by its webhook_id.

Delete Workspace RecordTool to delete a workspace record from Attio by its record_id.

Find RecordThis tool allows users to find a record in Attio by either its unique ID or by searching using unique attributes.

Get Attribute DetailsTool to get information about a single attribute on either an object or a list.

Get CommentTool to get a single comment by its comment_id in Attio.

Get CompanyTool to get a single company record by its record_id in Attio.

Get Deal RecordTool to get a single deal record by its record_id in Attio.

Get ListTool to retrieve details of a single list in your Attio workspace.

Get List EntryTool to get a single list entry by its entry_id.

Get NoteTool to get a single note by its note_id in Attio.

Get ObjectTool to get a single object by its object_id or slug.

List Record EntriesTool to list all entries, across all lists, for which a record is the parent.

Get Current Token InfoTool to identify the current access token, the workspace it is linked to, and any permissions it has.

Get TaskTool to get a single task by its task_id in Attio.

List TasksTool to list all tasks in the workspace.

Get WebhookTool to get a single webhook by its webhook_id in Attio.

Get Workspace MemberTool to get a single workspace member by their workspace_member_id.

Get Workspace RecordTool to get a single workspace record by its record_id.

List Attribute OptionsTool to list all select options for a particular attribute on either an object or a list.

List AttributesTool to list the attribute schema for an Attio object or list (including slugs, types, select/status config) to enable correct filtering and writes.

List Attribute StatusesTool to list all statuses for a particular status attribute on either an object or a list.

List Call RecordingsTool to list all call recordings for a meeting in Attio.

List CompaniesTool to list company records in Attio with optional filtering and sorting.

List Company Attribute ValuesTool to get all values for a given attribute on a company record.

List Company Record EntriesTool to list all entries across all lists for which a company record is the parent in Attio.

List Deal EntriesTool to list all entries across all lists for which a deal record is the parent in Attio.

List Deal Record Attribute ValuesTool to retrieve all values for a specified attribute on a deal record in Attio.

List Deal RecordsTool to list deal records in Attio with the option to filter and sort results.

List List Entry Attribute ValuesTool to retrieve all values for a specified attribute on a list entry in Attio.

List ListsThis tool retrieves all lists available in the Attio workspace, sorted as they appear in the sidebar.

List MeetingsTool to list all meetings in the workspace using a deterministic sort order.

List NotesLists notes in Attio.

List ObjectsThis tool retrieves a list of all available objects (both system-defined and user-defined) in the Attio workspace via GET /v2/objects, returning key metadata including slugs and IDs for each object.

List People Attribute ValuesTool to get all values for a given attribute on a person record.

List People Record EntriesTool to list all entries across all lists for which a person record is the parent in Attio.

List Record Attribute ValuesTool to retrieve all values for a specified attribute on a record in Attio.

List RecordsThis tool lists records from a specific object type in Attio.

List ThreadsTool to list threads of comments on a record or list entry in Attio.

List User Record EntriesTool to list all entries across all lists for which a user record is the parent in Attio.

List User RecordsTool to list user records in Attio with optional filtering and sorting.

List WebhooksTool to get all webhooks in your Attio workspace.

List Workspace MembersTool to list workspace members (actors) so agents can reliably assign owners and resolve workspace-member IDs even when the optional Users standard object is disabled.

List Workspace Record Attribute ValuesTool to retrieve all values for a specified attribute on a workspace record in Attio.

List Workspace Record EntriesTool to list all entries across all lists for which a workspace record is the parent in Attio.

List Workspace RecordsTool to list workspace records with filtering and sorting options.

Patch RecordTool to update people, companies, and other records by record_id using PATCH method.

Update List Entry by Entry IDTool to update list entries by entry_id in Attio.

Get PersonTool to get a single person record by its record_id in Attio.

List Person RecordsTool to list person records from Attio with optional filtering and sorting.

Create List EntryTool to add a record to a list as a new list entry in Attio.

List List EntriesTool to list entries in a given list, with the option to filter and sort results.

List Records with QueryTool to list people, company or other records in Attio with the option to filter and sort results.

Assert List Entry by ParentTool to create or update a list entry for a given parent record in Attio.

Update List Entry by Entry ID (PUT)Tool to update list entries by entry_id in Attio using PUT method.

Assert Record (Create or Update)Tool to create or update people, companies and other records in Attio using a matching attribute.

Put Record (Overwrite)Tool to update people, companies, and other records by record_id using PUT method.

Query RecordsTool to query records for a specific Attio object using server-side filtering operators and sorting.

Search RecordsTool to fuzzy search for records across multiple objects in Attio.

Update AttributeTool to update an existing attribute by its attribute_id or slug.

Update CompanyTool to update a company record in Attio by its record_id.

Update Deal RecordTool to update an existing deal record in Attio by record ID.

Update ListTool to update an existing list in Attio.

Update ObjectTool to update a single object's configuration in Attio.

Update PersonTool to update a person record in Attio by its record_id.

Update RecordThis tool updates an existing record in Attio for a specified object type (people, companies, deals, users, workspaces, etc.

Update Select OptionTool to update an existing select option for a select or multiselect attribute in Attio.

Update StatusTool to update a status on a status attribute on either an object or a list in Attio.

Update TaskTool to update an existing task in Attio by its task_id.

Update User RecordTool to update a user record in Attio by its record_id.

Update WebhookTool to update a webhook's target URL and/or event subscriptions.

Update Workspace RecordTool to update a workspace record by ID using PATCH method.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Prerequisites

Before starting, make sure you have:

Composio API Key and Claude/Anthropic API Key
Primary know-how of Claude Agents SDK
A Attio account
Some knowledge of Python

Getting API Keys for Claude/Anthropic and Composio

Claude/Anthropic API Key

Go to the Anthropic Console and create an API key. You'll need credits to use the models.
Keep the API key safe.

Composio API Key

Log in to the Composio dashboard.
Navigate to your API settings and generate a new API key.
Store this key securely as you'll need it for authentication.

Install dependencies

pip install composio-anthropic claude-agent-sdk python-dotenv

Install the Composio SDK and the Claude Agents SDK.

What's happening:

composio-anthropic provides Composio integration for Anthropic
claude-agent-sdk is the core agent framework
python-dotenv loads environment variables

Set up environment variables

bash

COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here
ANTHROPIC_API_KEY=your_anthropic_api_key_here

Create a .env file in your project root.

What's happening:

COMPOSIO_API_KEY authenticates with Composio
USER_ID identifies the user for session management
ANTHROPIC_API_KEY authenticates with Anthropic/Claude

Import dependencies

import asyncio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions
import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

What's happening:

We're importing all necessary libraries including the Claude Agent SDK and Composio
The load_dotenv() function loads environment variables from your .env file
This setup prepares the foundation for connecting Claude with Attio functionality

Create a Composio instance and Tool Router session

async def chat_with_remote_mcp():
    api_key = os.getenv("COMPOSIO_API_KEY")
    if not api_key:
        raise RuntimeError("COMPOSIO_API_KEY is not set")

    composio = Composio(api_key=api_key)

    # Create Tool Router session for Attio
    mcp_server = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["attio"]
    )

    url = mcp_server.mcp.url

    if not url:
        raise ValueError("Session URL not found")

What's happening:

The function checks for the required COMPOSIO_API_KEY environment variable
We're creating a Composio instance using our API key
The create method creates a Tool Router session for Attio
The returned url is the MCP server URL that your agent will use

Configure Claude Agent with MCP

# Configure remote MCP server for Claude
options = ClaudeAgentOptions(
    permission_mode="bypassPermissions",
    mcp_servers={
        "composio": {
            "type": "http",
            "url": url,
            "headers": {
                "x-api-key": os.getenv("COMPOSIO_API_KEY")
            }
        }
    },
    system_prompt="You are a helpful assistant with access to Attio tools via Composio.",
    max_turns=10
)

What's happening:

We're configuring the Claude Agent options with the MCP server URL
permission_mode="bypassPermissions" allows the agent to execute operations without asking for permission each time
The system prompt instructs the agent that it has access to Attio
max_turns=10 limits the conversation length to prevent excessive API usage

Create client and start chat loop

# Create client with context manager
async with ClaudeSDKClient(options=options) as client:
    print("\nChat started. Type 'exit' or 'quit' to end.\n")

    # Main chat loop
    while True:
        user_input = input("You: ").strip()
        if user_input.lower() in {"exit", "quit"}:
            print("Goodbye!")
            break

        # Send query
        await client.query(user_input)

        # Receive and print response
        print("Claude: ", end="", flush=True)
        async for message in client.receive_response():
            if hasattr(message, "content"):
                for block in message.content:
                    if hasattr(block, "text"):
                        print(block.text, end="", flush=True)
        print()

What's happening:

The Claude SDK client is created using the async context manager pattern
The agent processes each query and streams the response back in real-time
The chat loop continues until the user types 'exit' or 'quit'

Run the application

if __name__ == "__main__":
    asyncio.run(chat_with_remote_mcp())

What's happening:

This entry point runs the async chat_with_remote_mcp() function using asyncio.run()
The application will start, create the MCP connection, and begin the interactive chat session

Complete Code

Here's the complete code to get you started with Attio and Claude Agent SDK:

import asyncio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions
import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

async def chat_with_remote_mcp():
    api_key = os.getenv("COMPOSIO_API_KEY")
    if not api_key:
        raise RuntimeError("COMPOSIO_API_KEY is not set")

    composio = Composio(api_key=api_key)

    # Create Tool Router session for Attio
    mcp_server = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["attio"]
    )

    url = mcp_server.mcp.url

    if not url:
        raise ValueError("Session URL not found")

    # Configure remote MCP server for Claude
    options = ClaudeAgentOptions(
        permission_mode="bypassPermissions",
        mcp_servers={
            "composio": {
                "type": "http",
                "url": url,
                "headers": {
                    "x-api-key": os.getenv("COMPOSIO_API_KEY")
                }
            }
        },
        system_prompt="You are a helpful assistant with access to Attio tools via Composio.",
        max_turns=10
    )

    # Create client with context manager
    async with ClaudeSDKClient(options=options) as client:
        print("\nChat started. Type 'exit' or 'quit' to end.\n")

        # Main chat loop
        while True:
            user_input = input("You: ").strip()
            if user_input.lower() in {"exit", "quit"}:
                print("Goodbye!")
                break

            # Send query
            await client.query(user_input)

            # Receive and print response
            print("Claude: ", end="", flush=True)
            async for message in client.receive_response():
                if hasattr(message, "content"):
                    for block in message.content:
                        if hasattr(block, "text"):
                            print(block.text, end="", flush=True)
            print()

if __name__ == "__main__":
    asyncio.run(chat_with_remote_mcp())

Conclusion

You've successfully built a Claude Agent SDK agent that can interact with Attio through Composio's Tool Router.

Key features:

Native MCP support through Claude's agent framework
Streaming responses for real-time interaction
Permission bypass for smooth automated workflows

You can extend this by adding more toolkits, implementing custom business logic, or building a web interface around the agent.

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TOOLKIT MARKETPLACE

FAQ

What are the differences in Tool Router MCP and Attio MCP?

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

Can I use Tool Router MCP with Claude Agent SDK?

Yes, you can. Claude Agent SDK 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 Attio tools.

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

Yes, absolutely. You can configure which Attio 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 Attio data and credentials are handled as safely as possible.

Used by agents from

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Harsha GaddipatiCo-founder, Slashy

Karan skipped his own birthday party to fix our critical issue. It was 10 pm and he diverted his Waymo to help us instead. This really sets the bar, shows you the commitment you need to have when users rely on your software.

Abhi AryaCo-founder, Opennote

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it has immensely helped in keeping new users on the platform.

Nirman DaveCEO, Zams

We chose Composio over Pipedream because it delivered depth where it mattered. It supported niche tools and tricky edge cases that other platforms simply ignored. Giving us confidence to scale without compromising.

Ryan YuFounder, Extra Thursday

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down in the complexities of managing agent auth would have been a death sentence for Extra Thursday.

Tomisin JenrolaFounder & CEO, SwarmZero

Before partnering with Composio, adding tool integrations was a slow, resource-intensive process. Each integration could take weeks or months of engineering time, and maintaining them meant constantly keeping up with API changes.

Jerome LeclancheCo-Founder, Ingram Technologies

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Harsha GaddipatiCo-founder, Slashy

Abhi AryaCo-founder, Opennote

Nirman DaveCEO, Zams

Ryan YuFounder, Extra Thursday

Tomisin JenrolaFounder & CEO, SwarmZero

Jerome LeclancheCo-Founder, Ingram Technologies

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Harsha GaddipatiCo-founder, Slashy

Abhi AryaCo-founder, Opennote

Nirman DaveCEO, Zams

Ryan YuFounder, Extra Thursday

Tomisin JenrolaFounder & CEO, SwarmZero

Jerome LeclancheCo-Founder, Ingram Technologies

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

How to integrate Attio MCP with Claude Agent SDK

Table of Contents

Connect Attio without Auth hassles

Introduction

Also integrate Attio with

TL;DR

What is Claude Agent SDK?

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

Supported Tools & Triggers

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

How the Composio SDK works

Step-by-step Guide

Prerequisites

Getting API Keys for Claude/Anthropic and Composio

Install dependencies

Set up environment variables

Import dependencies

Create a Composio instance and Tool Router session

Configure Claude Agent with MCP

Create client and start chat loop

Run the application

Complete Code

Conclusion

How to build Attio MCP Agent with another framework

ChatGPT

Antigravity

OpenAI Agents SDK

Claude Code

Claude Cowork

Codex

Cursor

OpenClaw

Hermes

CLI

Google ADK

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

OpenCode

VS Code

Explore Other Toolkits

Hubspot

Pipedrive

Salesforce

FAQ

What are the differences in Tool Router MCP and Attio MCP?

Can I use Tool Router MCP with Claude Agent SDK?

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

How safe is my data with Composio Tool Router?

Used by agents from

Never worry about agent reliability