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Marvenn MCP Server

@marvennai

Repository

Basic information

Category

Other

Transports

stdio

Author

marvennai

Submitted by

DT

About Marvenn MCP Server

Marvenn AI MCP server

#sales#crm#outreach#campaigns#leads#email#sdr#b2b#automation#marketing

Marvenn MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "marvenn": {
      "command": "npx",
      "args": [
        "-y",
        "@marvenn/mcp-server"
      ],
      "env": {
        "MARVENN_API_KEY": "<your-api-key>",
        "MARVENN_BASE_URL": "https://marvenn.ai"
      }
    }
  }
}

Marvenn MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

What is Marvenn?

The Marvenn MCP Server exposes the Marvenn AI-powered outreach and CRM platform to any MCP-compatible client (Claude Desktop, Continue, Cursor, etc.), enabling natural language interaction with campaigns, leads, pending actions, agents, and users.

How to use Marvenn?

Add the server to your MCP client’s configuration (e.g., Claude Desktop) using npx -y mcp-remote with the SSE endpoint https://marvenn.ai/mcp/sse and your API key as a Bearer token. Alternatively, open an SSE stream via curl and post JSON-RPC messages to the session-specific message URL.

Key features of Marvenn

  • Connect AI assistants to Marvenn CRM and outreach data
  • List and filter campaigns with status and stats
  • Search and paginate leads in the CRM
  • Approve or reject pending human-authorization actions
  • Manage AI agents, users, and credit balances
  • Transports: Streamable HTTP and SSE

Use cases of Marvenn

  • A sales manager asks an AI assistant to list all active campaigns and their performance stats
  • An outreach coordinator reviews and approves pending email or social actions via natural language
  • A team lead creates a new multi-channel outreach campaign from a chat prompt
  • An admin adjusts credit balances for users and filters users by subscription tier
  • A marketer searches leads by company name or status to find qualified prospects

Frequently asked questions

1

What transports does the Marvenn MCP Server support?

It supports Streamable HTTP (`https://marvenn.ai/mcp`) and SSE (`https://marvenn.ai/mcp/sse`), both marked as **Working**.

2

Is an API key required for all operations?

No. An API key is optional for discovery methods (`tools/list`, `prompts/list`, `resources/list`), but required for executing tools (`tools/call`).

3

What API key scopes are available?

Key scopes are `read` (read-only access), `write` (read plus creating campaigns and approving/rejecting actions), and `admin` (write plus user management and credit operations, also requires an admin account role).

4

How are scope errors reported?

Scope errors (e.g., using a read-only key to call a write tool) are returned as a tool result with an `error` field in the response body, not as a JSON-RPC protocol error.

5

What JSON-RPC error codes does the server return?

The server returns `-32600` (invalid request), `-32601` (method/tool not found), `-32602` (invalid arguments), and `-32603` (internal server error).

Comments

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