How do I add a tag to a contact?

Use the `add_tag_to_contact` tool and provide the contact ID and the tag ID. Your agent will associate the tag with that specific contact in ActiveCampaign.

What is the API rate limit for ActiveCampaign?

ActiveCampaign enforces a standard limit of 5 requests per second per account. Exceeding this returns a 429 error code.

Should I use API version 1 or 3?

While version 1 is still technically supported, we always recommend (and this agent defaults to) RESTful API version 3 for performance and stability.

ActiveCampaign MCP Server for Claude Desktop 5 tools — connect in under 2 minutes

Name: ActiveCampaign
Availability: InStock
Author: Vinkius

modelcontextprotocol.io/quickstart/user

Built by Vinkius GDPR 5 Tools IDE

Claude Desktop is Anthropic's native application for interacting with Claude AI models on macOS and Windows. It was the first consumer application to ship with built-in MCP support, making it the reference implementation for the Model Context Protocol standard.

Get MCP Server for AI Agents

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Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

RecommendedModern Approach — Zero Configuration

Vinkius Desktop App

The modern way to manage MCP Servers — no config files, no terminal commands. Install ActiveCampaign and 2,500+ MCP Servers from a single visual interface.

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Classic Setup·json

{
  "mcpServers": {
    "activecampaign": {
      // Your Vinkius token — get it at cloud.vinkius.com
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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High SecurityEnterprise-grade

IAMAccess control

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DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About ActiveCampaign MCP Server

Connect your ActiveCampaign account to your AI agent to unlock powerful marketing and sales automation. From creating new contacts to auditing deal pipelines and managing email lists, your agent handles customer lifecycle management through natural conversation.

Claude Desktop is the definitive way to connect ActiveCampaign to your AI workflow. Add the Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 5 tools in the chat interface — ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.

What you can do

Contact Management — Create, update, and list contacts, including adding tags and assigning to specific lists
Deal Tracking — Monitor your sales pipeline by listing and retrieving details for deals across different stages
Automation Oversight — Audit active automations and ensure your customer journeys are running smoothly
List Management — Manage email lists and track subscriber growth and engagement patterns
CRM Integration — Quickly look up customer history and technical metadata to support sales outreach

The ActiveCampaign MCP Server exposes 5 tools through the Vinkius. Connect it to Claude Desktop in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect ActiveCampaign to Claude Desktop via MCP

Follow these steps to integrate the ActiveCampaign MCP Server with Claude Desktop.

Open Claude Desktop Settings

Go to Settings → Developer → Edit Config to open claude_desktop_config.json

Add the MCP Server

Paste the configuration above into the mcpServers section

Restart Claude Desktop

Close and reopen Claude Desktop to load the new server

Start using ActiveCampaign

Look for the 🔌 icon in the chat — your 5 tools are now available

Why Use Claude Desktop with the ActiveCampaign MCP Server

Claude Desktop by Anthropic provides unique advantages when paired with ActiveCampaign through the Model Context Protocol.

Claude Desktop is the reference MCP client — it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available

Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface

Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions

Enterprise-grade security with local config storage — your tokens never leave your machine, and connections go directly to the Vinkius Edge network

ActiveCampaign + Claude Desktop Use Cases

Practical scenarios where Claude Desktop combined with the ActiveCampaign MCP Server delivers measurable value.

Interactive data exploration: ask Claude to query DNS records, look up WHOIS data, and cross-reference results in a single conversation

Ad-hoc security audits: type a domain name and let Claude enumerate subdomains, check DNS history, and flag configuration anomalies — all through natural language

Executive briefings: generate comprehensive domain intelligence reports by asking Claude to compile findings into a formatted summary

Learning and training: new team members can explore API capabilities conversationally without needing to read documentation

ActiveCampaign MCP Tools for Claude Desktop (5)

These 5 tools become available when you connect ActiveCampaign to Claude Desktop via MCP:

add_contact_to_list

Requires both the Contact ID and the List ID. Subscribe an existing ActiveCampaign contact to a specific mailing list

add_tag_to_contact

Requires both the Contact ID and the Tag ID. Apply a specific tag to an ActiveCampaign contact profile

create_contact

Only email is strictly required. Add a new person to your ActiveCampaign account with basic profile details

list_contacts

Retrieve and search active contacts in ActiveCampaign, optionally filtering by email address

list_deals

Retrieve active opportunities and deals from your ActiveCampaign sales pipeline

Example Prompts for ActiveCampaign in Claude Desktop

Ready-to-use prompts you can give your Claude Desktop agent to start working with ActiveCampaign immediately.

"Search for a contact with email 'john.doe@example.com'."

Troubleshooting ActiveCampaign MCP Server with Claude Desktop

Common issues when connecting ActiveCampaign to Claude Desktop through the Vinkius, and how to resolve them.

Server not appearing after restart

Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).

Authentication error

Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.

Tools not showing in chat

Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting — wait a few seconds.

ActiveCampaign + Claude Desktop FAQ

Common questions about integrating ActiveCampaign MCP Server with Claude Desktop.

How does Claude Desktop discover MCP tools?

When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.

What happens if the MCP server is temporarily unavailable?

Claude Desktop handles disconnections gracefully — if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.

Can I connect multiple MCP servers simultaneously?

Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.

Is there a limit on the number of tools per server?

Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.

Does Claude Desktop support Streamable HTTP transport?

Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL — Claude auto-negotiates the transport protocol.