MCP servers · ActiveCampaign · MCP server + skill
Connect Claude Code to ActiveCampaign
One line gives Claude Code your ActiveCampaign account as tools: 10 endpoints, contacts, tags, automations, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude Code's access alone any time.
Three steps
- Create a free 0n3 account and connect ActiveCampaign. Paste a key or sign in; it lands in your vault, encrypted.
- Install 0n3 into Claude Code. The terminal agent. One command, then every connection you hold is a tool in your shell. The skill file teaches it how 0n3 works.
- Ask Claude Code: whoami. Then: "Create a contact in ActiveCampaign".
Install (user scope — every project)
claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"
The line above carries a placeholder; 0n3.app/install mints a real key named for Claude Code and fills it in.
What Claude Code can then do in ActiveCampaign
Contacts · Manage contacts4
Create a contact
POST /contactsList contacts
GET /contactsGet a contact
GET /contacts/{id}Update a contact
PUT /contacts/{id}Tags · Tag contacts2
Add a tag
POST /contactTagsList tags
GET /tagsAutomations · List automations1
List automations
GET /automationsDeals · Manage CRM deals2
Create a deal
POST /dealsList deals
GET /dealsMore · Everything else this app exposes.1
List lists
GET /listsActiveCampaign in other AI clients
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