Can this server create or update company records?

No, currently it only supports reading company records and notes, and writing company notes.

How do I obtain the required API key?

You can get a bearer token through the Attio API Explorer or by configuring OAuth with Attio.

Which AI clients are compatible with this MCP server?

It is compatible with clients like Claude Desktop that support MCP servers.

Attio MCP Server

MCP server enabling AI clients to read and write company records and notes in Attio CRM via its API.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "hmk-attio-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/inspector"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Overview

This MCP server connects AI clients to the Attio CRM API, allowing them to access and update company records and notes. It requires an Attio API key for authentication. Use this server when integrating AI agents with Attio to automate CRM data retrieval and note management.

Use cases

Read company records from Attio CRM

Retrieve notes associated with companies

Create or update company notes

Key features

Read company records

Read company notes

Write company notes

Capabilities & Tool Schemas

Inspect callable tools, capabilities, and parameters exposed to AI agents by Attio MCP Server.

Extracted Tool Capabilities

Read company records

Read company notes

Write company notes

Documentation Overview

attio-mcp-server

This is an MCP server for Attio, the AI-native CRM. It allows mcp clients (like Claude) to connect to the Attio API.

Current Capabilities

reading company records
reading company notes
writing company notes
other activities

Usage

You will need:

ATTIO_API_KEY

This is expected to be a bearer token which means you can get one through the API Explorer on the right hand side or configure OAuth and retrieve one throught the Attio API.

Claude Desktop Configuration

config.json

{
  "mcpServers": {
    "attio": {
      "command": "npx",
      "args": ["attio-mcp-server"],
      "env": {
        "ATTIO_API_KEY": "YOUR_ATTIO_API_KEY"
      }
    }
  }
}

Development

Prerequisites

Before you begin, ensure you have the following installed:

Node.js (recommended v22 or higher)
npm
git
dotenv

Setting up Development Environment

To set up the development environment, follow these steps:

Fork the repository
- Click the "Fork" button in the top-right corner of this repository
- This creates your own copy of the repository under your Github acocunt

Clone Your Fork:

git clone https://github.com/YOUR_USERNAME/attio-mcp-server.git
cd attio-mcp-server

Add Upstream Remote

git remote add upstream https://github.com/hmk/attio-mcp-server.git

Copy the dotenv file
sh
```
cp .env.template .env
```
Install dependencies:
Terminal
```
npm install
```
Run watch to keep index.js updated:
Terminal
```
npm run build:watch
```

Start the model context protocol development server:

dotenv npx @modelcontextprotocol/inspector node PATH_TO_YOUR_CLONED_REPO/dist/index.js

If the development server did not load the environment variable correctly, set the ATTIO_API_KEY on the left-hand side of the mcp inspector.

Read the full README →View source on GitHub →

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Frequently Asked Questions about Attio MCP Server

It requires an Attio API key provided as a bearer token via the ATTIO_API_KEY environment variable.

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Technical Specs & Signals

CategoryOther Tools and Integrations

32Quality signal: Emerging · 32/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership6/20

Documentation & tools15/30

Adoption & activity3/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

Supply-chain signal

2 high-severity advisories on record for this package. Most advisories affect transitive dependencies and may not be exploitable in this server's actual usage — this is a directional signal, not a security audit.

Critical 1High 1Medium 0Low 0

Scanned 15d ago via OSV.dev · @modelcontextprotocol/inspector (npm)

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Overview

Use cases

Read company records from Attio CRM

Retrieve notes associated with companies

Create or update company notes

Key features

Read company records

Read company notes

Write company notes

Documentation Overview

attio-mcp-server

This is an MCP server for Attio, the AI-native CRM. It allows mcp clients (like Claude) to connect to the Attio API.

Current Capabilities

reading company records
reading company notes
writing company notes
other activities

Usage

You will need:

ATTIO_API_KEY

This is expected to be a bearer token which means you can get one through the API Explorer on the right hand side or configure OAuth and retrieve one throught the Attio API.

Claude Desktop Configuration

config.json

{
  "mcpServers": {
    "attio": {
      "command": "npx",
      "args": ["attio-mcp-server"],
      "env": {
        "ATTIO_API_KEY": "YOUR_ATTIO_API_KEY"
      }
    }
  }
}

Development

Prerequisites

Before you begin, ensure you have the following installed:

Node.js (recommended v22 or higher)
npm
git
dotenv

Setting up Development Environment

To set up the development environment, follow these steps:

Fork the repository
- Click the "Fork" button in the top-right corner of this repository
- This creates your own copy of the repository under your Github acocunt

Clone Your Fork:

git clone https://github.com/YOUR_USERNAME/attio-mcp-server.git
cd attio-mcp-server

Add Upstream Remote

git remote add upstream https://github.com/hmk/attio-mcp-server.git

Copy the dotenv file
sh
```
cp .env.template .env
```
Install dependencies:
Terminal
```
npm install
```
Run watch to keep index.js updated:
Terminal
```
npm run build:watch
```

Start the model context protocol development server:

dotenv npx @modelcontextprotocol/inspector node PATH_TO_YOUR_CLONED_REPO/dist/index.js

If the development server did not load the environment variable correctly, set the ATTIO_API_KEY on the left-hand side of the mcp inspector.