# Multi-MCP

An MCP server that sends the same question or file to several AI models and returns their answers. Useful when one review pass feels thin.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 37
- Author: religa
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/religa/multi_mcp
- Updated: 2026-10-19
- HTML: https://affpapa.org/en/nevibecode/mcp/multi-mcp

## What it does

Multi-MCP sits between your editor and the model providers. It exposes four tools: a code review with OWASP Top 10 checks and a performance pass, a chat about the repository, a side-by-side model comparison, and a debate where models answer alone and then critique each other.

API providers share space with CLI ones such as Gemini CLI and Claude CLI. Short aliases like `mini` or `sonnet` save typing. Calls run in parallel on asyncio, so a round takes as long as the slowest model rather than the sum of all. Threads keep context across review steps.

You need Python 3.11 and a key for at least one provider: Anthropic, Anthropic, Google or OpenRouter. No key, no tools. Settings load from `.env` in three layers — shell variables first, then the project file, then `~/.multi_mcp/.env`. Custom models go into `~/.multi_mcp/config.yaml`, which overrides the bundled set.

## Requirements
- Needs: Python and uv (commands run via uvx)
- Environment variables: `OPENAI_API_KEY`, `ANTHROPIC_API_KEY`, `GEMINI_API_KEY`, `OPENROUTER_API_KEY`, `DEFAULT_MODEL`, `DEFAULT_MODEL_LIST` — keys and tokens: ask the human for the values, never commit them or put them in shared files.

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add --env OPENAI_API_KEY=<OPENAI_API_KEY> --env ANTHROPIC_API_KEY=<ANTHROPIC_API_KEY> --env GEMINI_API_KEY=<GEMINI_API_KEY> --env OPENROUTER_API_KEY=<OPENROUTER_API_KEY> --env DEFAULT_MODEL=<DEFAULT_MODEL> --transport stdio multi-mcp -- uvx multi-mcp
```
Replace <…> with your own values. 1 more environment variable is in the server README. uvx runs the command named after the package; if the README names another one, use uvx --from multi-mcp <command>

### Codex

**Platform CLI**
```bash
codex mcp add multi-mcp --env OPENAI_API_KEY=<OPENAI_API_KEY> --env ANTHROPIC_API_KEY=<ANTHROPIC_API_KEY> --env GEMINI_API_KEY=<GEMINI_API_KEY> --env OPENROUTER_API_KEY=<OPENROUTER_API_KEY> --env DEFAULT_MODEL=<DEFAULT_MODEL> -- uvx multi-mcp
```
Replace <…> with your own values. 1 more environment variable is in the server README. uvx runs the command named after the package; if the README names another one, use uvx --from multi-mcp <command>

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "multi-mcp": {
            "command": "uvx",
            "args": [
                "multi-mcp"
            ],
            "env": {
                "OPENAI_API_KEY": "<OPENAI_API_KEY>",
                "ANTHROPIC_API_KEY": "<ANTHROPIC_API_KEY>",
                "GEMINI_API_KEY": "<GEMINI_API_KEY>",
                "OPENROUTER_API_KEY": "<OPENROUTER_API_KEY>",
                "DEFAULT_MODEL": "<DEFAULT_MODEL>"
            }
        }
    }
}
```
Replace <…> with your own values. 1 more environment variable is in the server README. uvx runs the command named after the package; if the README names another one, use uvx --from multi-mcp <command>

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "multi-mcp": {
            "type": "stdio",
            "command": "uvx",
            "args": [
                "multi-mcp"
            ],
            "env": {
                "OPENAI_API_KEY": "<OPENAI_API_KEY>",
                "ANTHROPIC_API_KEY": "<ANTHROPIC_API_KEY>",
                "GEMINI_API_KEY": "<GEMINI_API_KEY>",
                "OPENROUTER_API_KEY": "<OPENROUTER_API_KEY>",
                "DEFAULT_MODEL": "<DEFAULT_MODEL>"
            }
        }
    }
}
```
Replace <…> with your own values. 1 more environment variable is in the server README. uvx runs the command named after the package; if the README names another one, use uvx --from multi-mcp <command>

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add -e OPENAI_API_KEY=<OPENAI_API_KEY> -e ANTHROPIC_API_KEY=<ANTHROPIC_API_KEY> -e GEMINI_API_KEY=<GEMINI_API_KEY> -e OPENROUTER_API_KEY=<OPENROUTER_API_KEY> -e DEFAULT_MODEL=<DEFAULT_MODEL> multi-mcp uvx multi-mcp
```
Replace <…> with your own values. 1 more environment variable is in the server README. uvx runs the command named after the package; if the README names another one, use uvx --from multi-mcp <command>

## When to use it
- run one file past several models and compare the notes
- scan code for OWASP Top 10 holes
- see how different models answer an architecture question
- get a model to critique another model's answer
- wire a local Ollama model next to cloud ones

## Example prompts
- Ask Multi chat what `parse_config` does in this repo
- Run multi codereview on this module for quality and maintainability with gemini-3 and Claude
- Use multi compare to weigh the state management options for this React app

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