I built an MCP server & Plugin using Claude code that queries GPT-5, Claude, Gemini, and Grok simultaneously from your IDE — uses your existing open ai and gemini subscriptions (no API keys needed)

Hey everyone — I've been building [**https://polydev.ai**](https://polydev.ai/) for the past few months using claude code and wanted to share it.

**The problem I kept running into:** I'd be deep in a coding session in Claude Code, hit a wall where the model keeps hallucinating or giving the same answer — even after I tell it the direction is wrong and it's not solving the issue. So I open ChatGPT in another tab, paste my code, wait for a response, compare it with Claude's answer, then maybe check Gemini too. Rinse and repeat a few times a day.

**What** [**polydev.ai**](https://polydev.ai/) **does:** It's an MCP server that sits inside your IDE (Claude Code, Cursor, Windsurf, Cline, Codex CLI) and queries multiple frontier models simultaneously.

One request → four expert opinions. When your AI agent gets stuck or wants a second opinion, it calls get\_perspectives through [polydev.ai](https://polydev.ai/) and gets responses from GPT-5,

Claude, Gemini, and Grok in parallel.

Your IDE Agent → [polydev.ai](https://polydev.ai/) MCP → \[GPT-5, Claude, Gemini, Grok\] → Combined perspectives

**The best part — no API keys required:** If you're already paying for ChatGPT Plus ($20/mo), Claude Pro ($20/mo), or Gemini Advanced ($20/mo), [polydev.ai](https://polydev.ai/) routes requests through your authenticated CLI sessions. Your existing subscription quota is used. Zero extra API cost if you already have the CLIs configured locally.

**Getting started is one command: npx polydev-ai@latest**

We're looking for honest feedback — would this be useful for developers working on complex projects? What would make it better?