ActiveCampaign MCP Server

ohneben's ActiveCampaign MCP

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The most complete ActiveCampaign MCP server there is. Run your entire ActiveCampaign account in plain language from Claude, Cursor, or any other MCP client.

This Model Context Protocol server exposes the whole ActiveCampaign account API — ~325 tools — covering the v3 REST API plus the SMS, WhatsApp and async Segments APIs, generated straight from ActiveCampaign's own OpenAPI definitions. Every tool is safety-categorized (🟢 read-only / 🟡 write / 🔴 destructive) so your assistant knows what an action does before it calls it. It runs over stdio (Claude Desktop and other local launchers) or Streamable HTTP (hosted in Docker), and ships with retries, client-side rate limiting tuned to ActiveCampaign's 5 req/s cap, and request timeouts so it holds up against a live account.

Why you'll want this

Some MCP servers just forward a slice of the API. This one is built to be safe to hand to an LLM, complete, and easy to run for real:

How it compares

There are a few ways to reach ActiveCampaign from an AI assistant today. Here's how this server stacks up against the alternatives:

✅ = yes · ➖ = partial / not documented · ❌ = no. Compiled from each project's public documentation; this is an unofficial project, not affiliated with ActiveCampaign or the projects listed. Tool counts are approximate and move as APIs evolve.

The short version: the official remote MCP is a great managed on-ramp but runs in ActiveCampaign's cloud on a curated slice of the API. The community servers are solid but top out around 60 tools of core CRM, stdio-only, without a deployment story. This one gives you the entire account API, both transports, a Docker deployment, and safety guardrails — self-hosted, on your token, MIT.

What you can do

Once it's connected, ask your assistant things like:

• "Find the contact jane@example.com and show her tags, lists and recent activity."
• "Create a deal for Acme Corp worth $12,000 in the 'Sales' pipeline, stage 'Qualified'."
• "List contacts added this month who opened the last campaign but haven't been tagged 'engaged'."
• "Add the tag 'webinar-2026' to every contact on list 5."
• "Show total ecommerce revenue and the top 10 orders from last week."
• "Create a segment of customers in Germany and count how many match."
• "Draft an SMS broadcast to the 'VIP' list — but don't send it until I confirm."

Tools are generated automatically from ActiveCampaign's specs and grouped into 🟢 read-only, 🟡 write and 🔴 destructive — so a well-behaved host can treat each group differently.

How it works

Claude / Cursor / any MCP client  ──MCP──►  this server  ──HTTPS──►  ActiveCampaign API (your account)

The server parses the bundled OpenAPI definitions into MCP tools (resolving $refs and guarding against recursive schemas), tags each with a curated safety category, and injects your Api-Token header on every outgoing request. Your token stays in the server's environment — the model never sees or handles it.

Requirements

• An ActiveCampaign account with API access — your API URL and API token from Settings → Developer. See Get your API credentials.
• Docker (Docker Desktop on macOS/Windows) for the quick start below — or Node.js ≥ 18 to run from source.

Quick start (Docker)

1. Add your credentials. Copy the example config and fill it in:

cp .env.example .env
# edit .env → set ACTIVECAMPAIGN_API_URL and ACTIVECAMPAIGN_API_TOKEN
#           → set MCP_AUTH_TOKEN to a long random string if reachable beyond localhost

2. Start the server:

docker compose up -d --build

The bundled docker-compose.yml binds to 127.0.0.1:8765 only, so the server is reachable from your machine but not the network.

3. Confirm it's running:

curl -s http://localhost:8765/health
# → {"status":"ok","server":"activecampaign-mcp","tools":325}

4. Connect your MCP client. The MCP endpoint is http://localhost:8765/mcp.

• Claude Desktop — add a custom connector (Settings → Connectors) pointing at the URL, or bridge it locally with mcp-remote. Add this under mcpServers in your config, then fully quit and reopen the app:

  {
    "mcpServers": {
      "activecampaign": {
        "command": "npx",
        "args": [
          "mcp-remote",
          "http://localhost:8765/mcp",
          "--header", "Authorization: Bearer YOUR_MCP_AUTH_TOKEN"
        ]
      }
    }
  }
  

  (Drop the --header line if you left MCP_AUTH_TOKEN empty.)

• Claude Code — one command:

  claude mcp add --transport http activecampaign http://localhost:8765/mcp
  

• Claude Cowork — shares Claude Code's MCP config, so the command above makes the tools available there too.

Prefer a prebuilt image?

Every push to main publishes a ready-to-run image to the GitHub Container Registry, so you can skip the local build entirely:

docker run -d --name activecampaign-mcp -p 127.0.0.1:8765:8765 --env-file .env \
  ghcr.io/ohneben/activecampaign-mcp:latest

Get your API credentials

1. Log in to ActiveCampaign and open Settings → Developer.
2. Copy your API URL → ACTIVECAMPAIGN_API_URL. It looks like https://your-account.api-us1.com/api/3. Use the exact URL shown — not all accounts are on api-us1, and custom domains differ.
3. Copy your API Key → ACTIVECAMPAIGN_API_TOKEN.

Put both in .env. The server injects the token on every request, so your assistant never sees it.

Configuration

Everything is set in .env (copied from .env.example):

After changing .env, reload with docker compose up -d --force-recreate.

Run npm run list-tools (no credentials needed) to print the full catalog, the per-category counts, and the list of resource-group keys you can filter on.

Tool safety categories

Each tool's description starts with one of these banners and carries the matching MCP annotations:

That's 162 read-only · 119 write · 44 destructive = 325 tools. Hosts that respect annotations (Claude included) can require confirmation for destructiveHint tools and trust readOnlyHint tools automatically. Prefer to lock it down further? Set ACTIVECAMPAIGN_READ_ONLY=true to expose only the 162 read-only tools.

Run from source (stdio, no Docker)

Prefer the classic stdio mode for Claude Desktop? Build it locally:

npm install
npm run build

Then point Claude Desktop at the compiled entrypoint in claude_desktop_config.json:

{
  "mcpServers": {
    "activecampaign": {
      "command": "node",
      "args": ["/ABSOLUTE/PATH/ActiveCampaign-MCP/dist/index.js"],
      "env": {
        "MCP_TRANSPORT": "stdio",
        "ACTIVECAMPAIGN_API_URL": "https://your-account.api-us1.com/api/3",
        "ACTIVECAMPAIGN_API_TOKEN": "your-api-token"
      }
    }
  }
}

Keeping the specs current

The bundled files under spec/ are the source of truth for the tools:

To refresh against a newer API version, drop the updated OpenAPI JSON in place (or point ACTIVECAMPAIGN_SPEC_DIR at a directory using the same filenames) and rebuild. New paths become new tools automatically — no code changes needed.

Development

npm install
npm run build      # compile TypeScript → dist/
npm test           # run the Vitest suite
npm run list-tools # print the categorized tool catalog (no credentials needed)

CI builds and tests every push across Node 20 and 22; pushes to main also publish a Docker image to the GitHub Container Registry.

Notes & conventions

• Transports: MCP_TRANSPORT=stdio (default) for local launchers; MCP_TRANSPORT=http for the always-on Streamable-HTTP server the Docker image runs.
• Paging / sorting / filtering: list tools accept limit (max 100), offset, orders ({"email":"ASC"}) and filters ({"name":"ecom"}). For very large contact exports ActiveCampaign recommends orders={"id":"ASC"} + id_greater.
• Rate limit: ActiveCampaign allows 5 requests / second per account (shared across every key); the server self-throttles at ACTIVECAMPAIGN_MAX_REQUESTS per ACTIVECAMPAIGN_RATE_WINDOW_MS (default 4 / 1 s) and retries any 429 it still receives, honoring Retry-After.
• Request bodies: write tools take a body argument; its schema is resolved from the spec and shown to the model (e.g. create-contact expects {"contact": {…}}).

Security

• Your API token lives only in .env, which is git-ignored. Never commit real secrets. The token grants full account access — if it leaks, rotate it in ActiveCampaign → Settings → Developer.
• The HTTP endpoint is unauthenticated by default (fine on localhost). To expose it beyond your machine, set MCP_AUTH_TOKEN and send it as an Authorization: Bearer <token> header — ideally behind TLS.
• Delete and send (SMS/WhatsApp) tools carry the right annotations so a well-behaved host prompts before acting — keep that confirmation on, or run in ACTIVECAMPAIGN_READ_ONLY=true mode.

See SECURITY.md for the full policy and how to report a vulnerability.

Credits & license

An unofficial community integration for ActiveCampaign; not affiliated with or endorsed by ActiveCampaign. Built on the Model Context Protocol. Tools are generated from ActiveCampaign's public OpenAPI definitions. Licensed under the MIT License.