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Engage for AI agents

Engage sends personalized customer messaging across email, push, in-app notifications, and SMS to turn users into repeat customers, used by growth and lifecycle marketing teams. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect EngageSee the 22 actions ↓
MarketingUsername and passwordMCP + RESTuseengage.com
AUDIT LOG · ENGAGEPOLICY: acme-support
09:41:07 · claude · u_8f2read
engage.list_lists
List Lists✓ allowed · 212ms
09:41:08 · claude · u_8f2read
engage.get_list
Get List✓ allowed · 164ms
09:41:09 · claude · u_8f2write
engage.create_list
Create List✓ approved · approved by user
09:41:12 · claude · u_8f2destructive
engage.delete_user
Delete User✕ blocked · policy: deny
EVERY ENGAGE CALL, ON THE RECORD
01 · USE CASES

What agents do in Engage.

01

Subscribe a user to a list

Subscribe a new user to a messaging list once they opt in during onboarding.

02

Track a user event

Track a user event so a triggered message fires the next time they complete an action.

03

Confirm before deleting a user

Require approval before deleting a user record, since it removes their full messaging history.

02 · ACTIONS

22 Engage actions, graded by risk.

Every Engage action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

7

Look things up. Allowed by default.

  • engage.get_list
    Get List
  • engage.get_user
    Get User By ID
  • engage.list_lists
    List Lists
  • engage.list_users
    List Users
  • engage.get_account_members
    Get Account Members
  • engage.track_user_event
    Track User Event
  • engage.convert_user_type
    Convert User Type

write

9

Create and change things. Allow, or ask the user first.

  • engage.create_list
    Create List
  • engage.create_user
    Create User
  • engage.update_user
    Update User
  • engage.add_user_to_lists
    Add User to Lists
  • engage.send_batch_request
    Batch Request
  • engage.update_account_role
    Update Account Role
  • engage.add_customer_to_accounts
    Add Customer to Accounts
  • engage.update_subscriber_status
    Update Subscriber Status
  • engage.subscribe_user_to_list
    Subscribe User to List

destructive

6

Delete, cancel or archive. Ask first, or deny outright.

  • engage.delete_user
    Delete User
  • engage.archive_list
    Archive List
  • engage.archive_user
    Archive User
  • engage.delete_subscriber_from_list
    Delete Subscriber From List
  • engage.remove_customer_from_account
    Remove Customer from Account
  • engage.merge_users
    Merge Users
03 · HOW IT WORKS

Engage in three steps.

  1. 01Your users connect EngageThey add their Engage username and password on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, writes like “create List” can wait for the user, and “delete User” can be denied outright.
  3. 03Any agent can actYour agent calls Engage through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('engage', {
  read: 'allow',
  write: 'ask',        // create_list
  destructive: 'deny',  // delete_user
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How Engage connects.

Users add their Engage username and password on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same Engage connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
Username and password
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use Engage from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More marketing apps.

Meta Ads67 actionsActiveCampaign298 actionsActiveTrail159 actionsAdobe Marketing Agent12 actionsAdtraction22 actionsAdyntel8 actionsAhrefs40 actionsAirOps96 actions
ALL MARKETING APPS →
07 · FAQ

Engage and Arc0, answered.

Q01

Can I use Engage with Claude, ChatGPT or Cursor?

Yes. Connect Engage to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Engage actions you allow.

Q02

How do users connect Engage?

Users add their Engage username and password on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which Engage actions can my agent take?

22 in total: 7 read, 9 write and 6 destructive, such as “create List”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in Engage?

Yes. Actions like “delete User” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call Engage too?

Yes. The same Engage connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug Engage into your agent.

Your users connect Engage once, under your brand. Your agent gets 22 actions behind your policies, with every call on the record.

Connect EngageBrowse all apps →

Free to build · MCP + REST · Audit log on every plan