Marvenn
@marvennai
About Marvenn
Marvenn AI 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"
}
}
}
}Tools
No tools detected
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
FAQ from Marvenn
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.
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).
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).
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.
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).
Frequently asked questions
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**.
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`).
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).
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.
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).
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