Live 58 Actions

Copper MCP Server
for AI Agents

Q: What AI frameworks and AI clients does the StackOne Copper MCP server support?

The StackOne Copper MCP server supports both. MCP clients (paste-and-go apps): Claude Desktop, Claude Code, Cursor, VS Code, Goose. Agent frameworks (code SDKs you build with): OpenAI Agents SDK, Anthropic, Vercel AI, Google ADK, CrewAI, Pydantic AI, LangChain, LangGraph, Azure AI Foundry.

Connect your AI agent to StackOne's Copper MCP server and give it 58 MCP tools out of the box. Auth, tool execution, and security all managed.

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Copper MCP Server

Built by

StackOne

Coverage

58 Agent Actions

Create, read, update, and delete across Copper — and extend your agent's capabilities with custom actions.

MCP Actions → Build Actions →

Authentication

Agent Tool Authentication

Per-user OAuth in one call. Your Copper MCP server gets session-scoped tokens with zero credentials stored on your infra.

Agent Auth →

Security

Agent Protection

Every Copper 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 Copper call.

Tools Discovery →

What is the Copper MCP Server?

A Copper MCP server lets AI agents read and write Copper data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Copper MCP server ships with 58 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 Copper MCP Tools

Every action from Copper's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.

Leads

Create Lead
Create a new lead in Copper
List Leads
Search and list leads in Copper
Update Lead
Update an existing lead
Delete Lead
Delete a lead from Copper

Persons

Create Person
Create a new person (contact) in Copper
Update Person
Update an existing person in Copper
Delete Person
Delete a person from Copper

Companys

Create Company
Create a new company in Copper
Update Company
Update an existing company in Copper
Delete Company
Permanently delete a company from Copper

Opportunitys

Create Opportunity
Create a new opportunity in Copper
Update Opportunity
Update an existing opportunity
Delete Opportunity
Delete an opportunity from Copper

Projects

Create Project
Create a new project in Copper
List Projects
Search and list projects in Copper
Update Project
Update an existing project
Delete Project
Delete a project from Copper

Tasks

Create Task
Create a new task in Copper
List Tasks
Search and list tasks in Copper
Update Task
Update an existing task
Delete Task
Delete a task from Copper

Activitys

Create Activity
Create a new activity in Copper CRM
Update Activity
Update an existing activity
Delete Activity
Delete an activity from Copper CRM

Other (34)

List Users
List users in the Copper account
List Lead Activities
List activities logged against a specific lead
List Lead Statuses
List all configured lead statuses in Copper
List People
Search and list people (contacts) in Copper
List Person Activities
List activities related to a specific person
List Contact Types
List all contact types available in the Copper account
List Companies
List companies in Copper using the search endpoint
List Company Activities
List activities for a specific company
List Opportunities
Search and list opportunities in Copper
List Pipelines
List all pipelines in Copper
List Pipeline Stages
List all pipeline stages in Copper
List Loss Reasons
List all loss reasons in Copper
List Customer Sources
List all customer sources in Copper
List Activities
Search and list activities in Copper CRM
List Activity Types
List all activity types in Copper CRM
List Tags
Retrieve all tags in Copper CRM
List Custom Field Definitions
Retrieve all custom field definitions in Copper CRM
Remove Relationship
Remove a relationship between a record and an entity in Copper
Fetch Account Details
Retrieve details of the authenticated Copper account
Fetch User By ID
Retrieve a single Copper user by user ID
Fetch API User
Retrieve details of the user associated with the API credentials
Fetch Lead By ID
Retrieve a specific lead by ID
Upsert Lead
Create or update a lead by matching on name or email. If a lead matches the supplied criteria it is updated with the supplied properties; otherwise a new lead is created.
Convert Lead
Convert a lead into a person, company, and optional opportunity
Fetch Person By ID
Retrieve a specific person by their unique ID
Fetch Person By Email
Retrieve a person by their email address
Fetch Company By ID
Retrieve a specific company by ID
Fetch Opportunity By ID
Retrieve a specific opportunity by ID
Fetch Project By ID
Retrieve a specific project by ID
Fetch Task By ID
Retrieve a specific task by ID
Fetch Activity By ID
Retrieve a specific activity by ID
Fetch Custom Field Definition
Retrieve a specific custom field definition by ID
View All Related Records
View all records related to an entity in Copper
Relate Record To Entity
Relate an existing record to an entity in Copper

Copper AI Agent Use Cases

Connect your AI agent to Copper and help your team scale the sales operations they run by hand today.

Post-Demo Follow-Up

Use StackOne to connect your AI agent to your CRM, email, and calendar tools to automate post-demo follow-up.

View

Deal Risk Scoring

Use StackOne to connect your AI agent to your CRM, email, and calendar tools to automate deal risk scoring and pipeline alerts.

View

Outbound Prospecting

Use StackOne to connect your AI agent to your CRM, sales engagement, and messaging tools to automate outbound prospecting.

View

More Sales & CRM use cases

Set Up Your Copper MCP Server in Minutes

One endpoint. Any framework. Your agent is talking to Copper in under 10 lines of code.

MCP Clients

Agent Frameworks

Claude Desktop-

JSON

Claude Desktop Docs

{
  "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>"
      ]
    }
  }
}

Check More CRM MCP Servers

Salesforce

380+ actions

Keap

158+ actions

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All CRM MCP Servers →

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

Copper MCP Server FAQ

Does StackOne have a Copper MCP server?

Yes. StackOne offers a hosted Copper MCP server with 58 pre-built actions, and every action is tested and QA'd by StackOne. Connect it to Claude, Cursor, and any other MCP client, or to any agent framework through the AI Action SDK. It ships with managed agent authentication, prompt injection defense, and tool discovery with server-side execution that preserve your agent's context window and keep reasoning performance.

Copper MCP server vs direct API integration — what's the difference?

A Copper MCP server and direct API integration serve different use cases. Direct API integration is for software-to-software — backend code calling Copper. A Copper MCP server is for AI agents — MCP clients like Claude and Cursor, plus framework agents built with OpenAI, LangChain, or Vercel AI — discovering and calling Copper at runtime. StackOne provides both.

How does Copper authentication work for AI agents?

Copper authentication for AI agents works through a StackOne Connect Session. Create one via the dashboard or the SDK — you get an auth link and ready-to-paste config for Claude Desktop, Cursor, and other MCP clients. Your user authenticates their own Copper account; StackOne handles token exchange, storage, and refresh. Credentials never reach the LLM, and each user is isolated via origin_owner_id.

Are Copper MCP tools vulnerable to prompt injection?

Yes — Copper MCP tools can be vulnerable to indirect prompt injection. Any tool that reads user-written content — documents, messages, tickets, records, or free-text fields — is a potential vector. StackOne Defender scans every tool response before it enters the agent's context — regex patterns in ~1ms, then a MiniLM classifier in ~4ms. 88.7% accuracy, CPU-only.

What is the context bloat of a Copper agent and how do I avoid it?

Context bloat happens when Copper tool schemas and API responses eat your Copper agent's memory, preventing it from reasoning effectively. A single Copper query can return a massive JSON response, and connecting multiple tools compounds the problem. Tools Discovery and Code Mode reduce context bloat — loading only relevant tools per query and keeping raw responses out of the agent's context.

Can I limit which actions my Copper agent can access?

Yes — you can limit which actions your Copper agent can access directly from the StackOne dashboard. Toggle actions on or off, or restrict them to specific accounts, with no code changes to your agent. Session tokens can be scoped to exact actions so if one leaks, exposure stays contained.

Can I create custom agent actions for my Copper MCP server?

Yes — you can create custom agent actions for your Copper MCP server using Connector Builder. It's an integration agent your coding assistant (Claude Code, Cursor, or Copilot) can invoke to research Copper's API, generate production-ready connector YAML, test against the live API, and validate before you ship.

When should I NOT use a Copper MCP server?

Skip a Copper MCP server if your integration is purely software-to-software — direct Copper API integration is simpler when no AI agent is involved. For deterministic, compliance-critical operations (financial transactions, regulatory reporting), direct API gives you predictable behavior without agent-driven decision-making. MCP shines when AI agents need to dynamically discover and call Copper actions at runtime.

What AI frameworks and AI clients does the StackOne Copper MCP server support?

The StackOne Copper MCP server supports both. MCP clients (paste-and-go apps): Claude Desktop, Claude Code, Cursor, VS Code, Goose. Agent frameworks (code SDKs you build with): OpenAI Agents SDK, Anthropic, Vercel AI, Google ADK, CrewAI, Pydantic AI, LangChain, LangGraph, Azure AI Foundry.

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.

Start Free Book Demo

Copper MCP Serverfor AI Agents

58 Agent Actions

Agent Tool Authentication

Agent Protection

Max Agent Context. Min Cost.

What is the Copper MCP Server?

All Copper MCP Tools

Leads

Persons

Companys

Opportunitys

Projects

Tasks

Activitys

Other (34)

Copper AI Agent Use Cases

Set Up Your Copper MCP Server in Minutes

Check More CRM MCP Servers

Platform Resources

MCP Code Mode: Keeping Tool Responses Out of Agent Context

Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery

Indirect Prompt Injection Defense for MCP Tools: A Technical Guide

MCP vs A2A: Architecture, Security, and When to Use Each

MCP vs API: What 200+ Connector Builds Taught Us

Copper MCP Server FAQ

Put your AI agents to work

Copper MCP Server
for AI Agents