Ask GPT-5.2-Codex, Gemini & 200+ Models — Without Leaving Claude Code

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Get instant second opinions, code reviews, and architecture feedback directly inside Claude.

No context switching. No copy-paste. Just ask.

Uses your own OpenRouter API key — no middleman, no telemetry, you're in control.

30-Second Install • See It Work • Examples • Uninstall

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This project was reviewed and improved by GPT-5.2-Codex via OpenRouter — proving the tool works! See the contribution details.

• Instant code review from GPT-5.2-Codex without leaving Claude
• Compare approaches across different LLMs in one conversation
• Catch edge cases by getting a second opinion in seconds
• Stay in flow — no tab switching, no context loss

"Ask GPT-5.2-Codex to review this function" — that's it. Claude handles the rest.

This MCP server lets Claude query 200+ models via OpenRouter — all in the same conversation.

🎯 How It Works

flowchart TD
    A["🧑‍💻 You + Claude Code"] -->|"Ask GPT-5.2-Codex to review"| B["🌉 Claude Hub<br/>MCP Bridge"]
    B --> C["🔀 OpenRouter API"]
    C --> D["GPT-5.2 Codex"]
    C --> E["Gemini 2.5"]
    C --> F["DeepSeek R1"]
    C --> G["...200+ models"]
    D & E & F & G --> H["📨 Response via Claude"]
    H --> I["✅ You get the answer"]

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Just ask naturally — Claude handles the rest:

You: "Write a function to parse CSV files"

Claude: [writes the function]

You: "Ask GPT-5.2-Codex if there's a better approach"
      ~~~~~~~~~~~~~~ ← just name the model you want

Claude: [calls OpenRouter API → GPT-5.2-Codex]

Claude: "GPT-5.2-Codex suggests using a streaming parser for large files..."

You: "Good idea, let's update it"

Claude: [updates the code]

No special commands needed. Just say "ask GPT-5.2-Codex", "have Gemini review", "get DeepSeek's opinion" — Claude figures out which model to call.

✨ Features

Feature	Description
200+ Models	GPT-5.2-Codex, Gemini, DeepSeek, Llama, Mistral, and more
Same Session	No switching apps or copying code
Your Context	Other models see what you're working on
Quick Access	Just ask Claude to get another opinion

📋 Prerequisites

Requirement	Where to get it
Claude Code CLI	claude.ai/download (requires Pro subscription)
Node.js 18+	nodejs.org
OpenRouter Account	openrouter.ai (free tier available)
OpenRouter API Key	openrouter.ai/keys

🚀 Quick Start

Option A: Download ZIP (no git needed)

1. Download: Click here to download ZIP
2. Extract the ZIP file (you'll get Claude_GPT_MCP-main folder)
3. Open terminal in that folder:
   • Windows: Right-click folder → "Open in Terminal"
   • Mac: Right-click folder → "New Terminal at Folder"
   • Linux: Right-click → "Open Terminal Here"
4. Run the installer:

   ./setup.sh

   Windows users may need: bash setup.sh

Option B: Clone with git

git clone https://github.com/stefans71/Claude_GPT_MCP.git
cd Claude_GPT_MCP
./setup.sh

Option C: Install on a VPS/Remote Server

1. SSH into your VPS and navigate to your home directory (or wherever Claude Code is installed)

ssh user@your-server.com
cd ~

2. Run this one-liner:

curl -sL https://github.com/stefans71/Claude_GPT_MCP/archive/refs/heads/main.tar.gz | tar -xz && cd Claude_GPT_MCP-main && ./setup.sh

That's it! This downloads, extracts, and runs setup in one command. No git required.

3. Restart Claude Code and you're ready.

VPS Notes:

• Your OpenRouter API key is stored in ~/.claude.json (passed directly to the MCP server)
• For Docker/containerized Claude: set OPENROUTER_API_KEY as an environment variable

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The installer handles everything:

• ✓ Installs dependencies
• ✓ Prompts for your OpenRouter API key
• ✓ Configures Claude Code automatically

Restart Claude Code and you're ready.

💬 Examples

Get a Second Opinion

"Ask GPT-5.2-Codex to review this function"
"What would Gemini do differently here?"
"Have DeepSeek check this for edge cases"

Compare Approaches

"Ask GPT-5.2-Codex and Gemini how they'd implement this"
"Get Claude and GPT-5.2-Codex's opinion on this architecture"

Specialized Tasks

"Ask GPT-5.2-Codex to optimize this algorithm"
"Have DeepSeek explain this regex"
"Get Gemini's take on this SQL query"

Explore Models

"What models are available?"
"Show me models good for coding"
"Set my default to GPT-5.2-Codex"

🔧 Management

Check Your Setup

./setup.sh --show-key   # View API key (masked)
./setup.sh --help       # All options

Change API Key

./setup.sh --set-key

Or just ask Claude: "Change my OpenRouter API key"

🗑️ Uninstall (click to expand)

What Gets Removed?

Component	Removed?	Details
OpenRouter from Claude	Yes	Only the "openrouter" entry in ~/.claude.json — your other Claude settings stay intact
Your API key	Optional	You choose — the script asks before removing
The folder	Manual	You delete it yourself after uninstalling

Important: This only removes OpenRouter. Your other Claude Code settings and API keys for other services are untouched.

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Using the Uninstaller Script

1. Open your terminal

• Windows: Open PowerShell or Command Prompt
• Mac: Open Terminal (Applications → Utilities → Terminal)
• Linux: Open your terminal

2. Navigate to where you installed it

If you downloaded the ZIP:

cd ~/Downloads/Claude_GPT_MCP-main    # or wherever you extracted it

If you cloned with git:

cd Claude_GPT_MCP    # or wherever you cloned it

3. Run the uninstaller

./setup.sh --uninstall

4. Follow the prompts

• It will ask to remove OpenRouter from Claude Code → Yes
• It will ask to remove your API key → Your choice (Yes = removes the OPENROUTER_API_KEY line from your shell config)

5. Restart Claude Code

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Delete the Files (Optional)

After running the uninstaller, you can delete the folder:

# First, exit the folder
cd ..

# Then delete it
rm -rf Claude_GPT_MCP-main    # if you used ZIP
rm -rf Claude_GPT_MCP         # if you used git

Windows users: Just delete the folder normally in File Explorer.

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Manual Uninstall (if the script doesn't work)

This works for both ZIP downloads and git clones.

Step 1: Remove OpenRouter from Claude Code config

Open ~/.claude.json in a text editor:

# Mac/Linux
nano ~/.claude.json

# Windows (in PowerShell)
notepad $env:USERPROFILE\.claude.json

Find and delete ONLY the "openrouter": { ... } section. Keep everything else.

Before:

{
  "mcpServers": {
    "openrouter": {
      "command": "node",
      "args": ["/path/to/dist/index.js"]
    },
    "other-server": { ... }
  }
}

After:

{
  "mcpServers": {
    "other-server": { ... }
  }
}

Step 2: Remove API key (optional)

Open your shell config:

# Mac
nano ~/.zshrc

# Linux
nano ~/.bashrc

Find and delete the line:

export OPENROUTER_API_KEY="sk-or-..."

Step 3: Delete the folder

# Mac/Linux
rm -rf /path/to/Claude_GPT_MCP

# Windows - just delete the folder in File Explorer

📁 Where Things Live

File	What it does
~/.claude.json	Claude Code config + your API key (in env section)
~/.config/openrouter-mcp/config.json	Your preferences (default model, favorites) + API key backup

🐛 Troubleshooting

"OPENROUTER_API_KEY not set"

./setup.sh --set-key

MCP not loading

claude --mcp-debug

Model not found

"What models are available?"

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Built With

  

Built with Multi-Model Collaboration

This project practices what it preaches. GPT-5.2-Codex reviewed and improved this codebase via OpenRouter, demonstrating real multi-model workflows:

Reviewed by GPT-5.2-Codex	Improvements Made
setup.sh	Fixed macOS compatibility, improved error handling, added config backups
package.json	Added missing metadata, keywords, proper exports
README.md	Made more enticing, added trust/security section

This is exactly how the tool is meant to be used — Claude writes code, another model reviews it, and you get better results.

Privacy & Security

• Your API key stays local — stored only on your machine
• Direct to OpenRouter — requests go straight to OpenRouter, not through any middleman
• No telemetry — we don't collect any data
• Open source — inspect the code yourself

Cost

OpenRouter offers a free tier with many models available at no cost. Pay-per-use pricing for premium models. See openrouter.ai/models for current pricing.

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_{Built for Claude Code users who want more perspectives
Apache 2.0 License}