Constant Contact MCP Server
for AI Agents
Connect your AI agent to StackOne's Constant Contact MCP server and give it 78 MCP tools out of the box. Auth, tool execution, and security all managed.
StackOne 
Coverage
78 Agent Actions
Create, read, update, and delete across Constant Contact — and extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your Constant Contact MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every Constant Contact tool response scanned for prompt injection in milliseconds — 88.7% accuracy, all running on CPU.
Prompt Injection Defense →
Performance
Max Agent Context. Min Cost.
Free up to 96% of your agent's context window to enhance reasoning and reduce cost, on every Constant Contact call.
Tools Discovery →What is the Constant Contact MCP Server?
A Constant Contact MCP server lets AI agents read and write Constant Contact data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Constant Contact MCP server ships with 78 pre-built actions, fully extensible via the Connector Builder — plus managed authentication, prompt injection defense, observability, and agent execution runtime. Connect it from MCP clients like Claude Desktop, Claude Code, Cursor, Goose, and VS Code, or from agent frameworks like OpenAI Agents SDK, LangChain, and Vercel AI SDK.
All Constant Contact MCP Tools
Every action from Constant Contact's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.
Account Summarys
- Get Account Summary
Retrieve details about the Constant Contact account
- Update Account Summary
Update account details such as name, website, and contact information
Account Physical Address
- Create Account Physical Address
Add the organization's physical address to the Constant Contact account
- Get Account Physical Address
Retrieve the organization's physical address on file
- Update Account Physical Address
Update the organization's physical address on the Constant Contact account
Account Emails
- Create Account Email
Add a new email address to the Constant Contact account
- List Account Emails
List email addresses associated with the Constant Contact account
Contacts
- Create Contact
Create a new contact in Constant Contact
- List Contacts
Retrieve a paginated list of contacts with optional filtering
- Get Contact
Retrieve a specific contact by their unique ID
- Update Contact
Update an existing contact's information by ID
- Delete Contact
Delete a contact by their unique ID
Contact Lists
- Create Contact List
Create a new contact list in the account
- List Contact Lists
Retrieve all contact lists in the account
- Get Contact List
Retrieve a specific contact list by its unique ID
- Update Contact List
Update the name, description, or favorite status of a contact list
- Delete Contact List
Delete a contact list by its unique ID
Custom Fields
- Create Custom Field
Create a new custom field definition for contacts
- List Custom Fields
Retrieve all custom field definitions in the account
- Get Custom Field
Retrieve a specific custom field definition by its unique ID
- Update Custom Field
Update an existing custom field's label or choices
- Delete Custom Field
Delete a custom field definition by its unique ID
Events
- Create Event
Create a new event with default settings, registration form, and landing page
- Copy Event
Create a deep copy of an existing event
- List Events
Retrieve a collection of events with event details
- Get Event
Retrieve details for a specific event by its unique ID
- Update Event
Partially update an event with the provided fields
Segments
- Create Segment
Create a new segment with filter criteria
- List Segments
Retrieve all segments defined in the account
- Get Segment
Retrieve a specific segment by its unique ID
- Update Segment
Update an existing segment's name and filter criteria
- Delete Segment
Delete a segment by its unique ID
Email Campaigns
- Create Email Campaign
Create a new email campaign
- List Email Campaigns
Retrieve all email campaigns in the account
- Get Email Campaign
Retrieve a specific email campaign by its unique ID
- Delete Email Campaign
Delete an email campaign by its unique ID
Campaign Activitys
- Get Campaign Activity
Retrieve a specific email campaign activity by its unique ID
- Update Campaign Activity
Update the content and settings of an email campaign activity
Tags
- Create Tag
Create a new contact tag with a unique name
- List Tags
Retrieve all contact tags in the account
- Get Tag
Retrieve details for a specific contact tag by its unique ID
- Update Tag
Rename an existing contact tag
- Delete Tag
Delete a contact tag and unassign it from all contacts
Other (35)
- Create Or Update Contact
Create a new contact or update an existing one via sign-up form
- Get User Privileges
Retrieve the privileges associated with the authenticated user
- Get Campaign Activity Schedule
Retrieve the current schedule for an email campaign activity
- Get Email Campaign Preview
Get the HTML preview of an email campaign activity
- Get Send History
Get the send history of an email campaign activity
- List Bulk Activities
Retrieve the status of all bulk activities (async jobs) in the account
- Get Bulk Activity
Retrieve the status and details of a specific bulk activity by its unique ID
- List Email Campaign Summary Reports
Retrieve aggregate statistics for email campaigns
- Get Email Campaign Stats
Retrieve performance tracking statistics for one or more email campaigns
- Get Email Campaign Activity Stats
Retrieve performance tracking statistics for up to ten email campaign activities
- Get Email Links Report
Retrieve link click counts for a specific email campaign activity
- Get Email Sends Report
Retrieve a list of contacts that were sent a specific email campaign activity
- Get Email Opens Report
Retrieve each time a contact opened a specific email campaign activity
- Get Email Unique Opens Report
Retrieve the last time each contact opened a specific email campaign activity
- Get Email Did Not Opens Report
Retrieve contacts that were sent but did not open a specific email campaign activity
- Get Email Clicks Report
Retrieve each time a contact clicked a link in a specific email campaign activity
- Get Email Forwards Report
Retrieve each time a contact forwarded a specific email campaign activity
- Get Email Opt-outs Report
Retrieve contacts that unsubscribed via a specific email campaign activity
- Get Email Bounces Report
Retrieve contact bounce data for a specific email campaign activity
- List Contact Activity Reports
Retrieve a contact's tracking activities across all campaigns
- Get Contact Activity Summary
Get a summary of campaign actions for a specific contact
- Get Contact Open And Click Rates
Get average open and click rates for a specific contact over a date range
- Update Email Campaign Name
Rename an email campaign
- Resubscribe Contact
Send a resubscribe confirmation email to an unsubscribed contact
- Rename Segment
Rename an existing segment without modifying its criteria
- Schedule Campaign Activity
Schedule an email campaign activity to send at a specific date or immediately
- Unschedule Campaign Activity
Unschedule a scheduled email campaign activity
- Test Send Email Campaign
Send a test email to specific email addresses before scheduling
- Bulk Import Contacts (JSON)
Import contacts in bulk using a JSON payload
- Bulk Export Contacts
Export contacts to a CSV file
- Bulk Delete Contacts
Delete contacts in bulk by contact IDs or list membership
- Bulk Add Contacts To Lists
Add contacts to one or more lists in bulk
- Bulk Remove Contacts From Lists
Remove contacts from one or more lists in bulk
- Bulk Add Tags To Contacts
Add one or more tags to contacts in bulk
- Bulk Remove Tags From Contacts
Remove one or more tags from contacts in bulk
Constant Contact AI Agent Use Cases
Connect your AI agent to Constant Contact and help your team scale the marketing operations they run by hand today.
Use StackOne to connect your AI agent to your marketing automation, CRM, and email tools to automate lead nurture email sequences.
ViewUse StackOne to connect your AI agent to your marketing automation, email, and analytics platforms to automate campaign performance reporting.
ViewUse StackOne to connect your AI agent to your document stores, email platforms, and messaging tools to automate content repurposing and distribution.
ViewSet Up Your Constant Contact MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to Constant Contact in under 10 lines of code.
Agent Frameworks
JSON{
"mcpServers": {
"stackone": {
"command": "npx",
"args": [
"-y",
"mcp-remote@latest",
"https://api.stackone.com/mcp?x-account-id=<account_id>",
"--header",
"Authorization: Basic <YOUR_BASE64_TOKEN>"
]
}
}
}Platform Resources
MCP Code Mode: Keeping Tool Responses Out of Agent Context
Anthropic's code_execution processes data already in context. Custom MCP code mode keeps raw tool responses in a sandbox. 14K tokens vs 500.
11 min
Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery
Benchmarking BM25, TF-IDF, and hybrid search for MCP tool discovery across 916 tools. The 80/20 TF-IDF/BM25 hybrid hits 21% Top-1 accuracy in under 1ms.
10 min
Indirect Prompt Injection Defense for MCP Tools: A Technical Guide
MCP tools that read emails, CRM records, and tickets are indirect prompt injection vectors. Here's how we built a two-tier defense that scans tool results in ~11ms.
12 min
MCP vs A2A: Architecture, Security, and When to Use Each
MCP vs A2A: what each protocol standardizes, how they differ, their shared security risks including indirect prompt injection, and when to use one, both, or a hybrid architecture.
12 min
MCP vs API: What 200+ Connector Builds Taught Us
MCP wraps APIs, it doesn't replace them. After building 200+ connectors that serve both, here's when each approach wins.
14 min read
Constant Contact MCP Server FAQ
Does StackOne have a Constant Contact MCP server?
Constant Contact MCP server vs direct API integration — what's the difference?
How does Constant Contact authentication work for AI agents?
origin_owner_id.Are Constant Contact MCP tools vulnerable to prompt injection?
What is the context bloat of a Constant Contact agent and how do I avoid it?
Can I limit which actions my Constant Contact agent can access?
Can I create custom agent actions for my Constant Contact MCP server?
When should I NOT use a Constant Contact MCP server?
What AI frameworks and AI clients does the StackOne Constant Contact MCP server support?
Put your AI agents to work
All the tools you need to build and scale AI agent integrations, with best-in-class connectivity, execution, and security.