0n3
MCP servers · ActiveCampaign · MCP server

Connect Codex CLI to ActiveCampaign

One line gives Codex CLI 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 Codex CLI's access alone any time.

Get the line for Codex CLIConnect ActiveCampaign first

Three steps

  1. Create a free 0n3 account and connect ActiveCampaign. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Codex CLI. OpenAI's terminal agent reads 0n3 over Streamable HTTP with a token from your environment.
  3. Ask Codex CLI: whoami. Then: "Create a contact in ActiveCampaign".
Put the token in your environment
export ON3_TOKEN="<your 0n token>"

Add it to your shell profile so Codex finds it next time.

The line above carries a placeholder; 0n3.app/install mints a real key named for Codex CLI and fills it in.

What Codex CLI can then do in ActiveCampaign

Contacts · Manage contacts4
Create a contactPOST /contacts
List contactsGET /contacts
Get a contactGET /contacts/{id}
Update a contactPUT /contacts/{id}
Tags · Tag contacts2
Add a tagPOST /contactTags
List tagsGET /tags
Automations · List automations1
List automationsGET /automations
Deals · Manage CRM deals2
Create a dealPOST /deals
List dealsGET /deals
More · Everything else this app exposes.1
List listsGET /lists

ActiveCampaign in other AI clients

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