OnlyTerp

OnlyTerp / UltraCode-Shim

Public

Give Claude Code's ultracode mode to ANY model you already pay for. A tiny local proxy + one config.json. Point your AI at AGENTS.md and it sets itself up.

44
2
80% credibility
Found Jun 01, 2026 at 44 stars -- GitGems finds repos before they trend. Get early access to the next one.
Sign Up Free
AI Analysis
Python
AI Summary

UltraCode-Shim is a free tool that lets you use Claude Code's powerful UltraCode mode with any AI assistant you already pay for. Normally, UltraCode only works with Claude models, but this bridge adds those deep-reasoning capabilities to GPT-5.5, DeepSeek, OpenRouter, local models, and more. You install it once, connect your AI services, and then Claude Code's /model menu shows all your options. Pick any model and get the full UltraCode experience—thorough analysis, exhaustive answers, and deep reasoning—on the AI service of your choice.

How It Works

1
💡 You discover Claude Code's UltraCode mode

You've been using Claude Code and heard about UltraCode mode—the deep-thinking feature that produces thorough, high-quality code. But you want to use it with your favorite AI model, not just Claude.

2
🔧 You set up a simple bridge on your computer

You download UltraCode-Shim and run a small program that lives on your computer. It acts like a helpful translator between Claude Code and any AI service you prefer.

3
You connect your favorite AI services
🤖
GPT-5.5 via ChatGPT login

Use your existing ChatGPT or Codex account—no extra API keys needed

🌐
OpenRouter or other AI services

Connect any OpenAI-compatible AI you already have access to

🏠
Local models

Use AI models running on your own machine through Ollama

4
🚀 You launch Claude Code with UltraCode powers

You click one icon on your desktop and Claude Code opens up—but now it's running in UltraCode mode, ready to tackle complex coding tasks with deep reasoning.

5
🎨 You pick any model from the menu

You type /model and see your entire collection of AI assistants listed. You pick whichever one you want for this task—maybe GPT-5.5 for one project, DeepSeek for another.

✨ Your project comes to life

Claude Code works its magic with full UltraCode reasoning on your chosen AI. Complex bugs get fixed, thorough tests get written, and everything feels effortless—even though you're using the AI service you prefer.

Sign up to see the full architecture

4 more

Sign Up Free

Star Growth

See how this repo grew from 44 to 44 stars Sign Up Free
Repurpose This Repo

Repurpose is a Pro feature

Generate ready-to-use prompts for X threads, LinkedIn posts, blog posts, YouTube scripts, and more -- with full repo context baked in.

Unlock Repurpose
AI-Generated Review

What is UltraCode-Shim?

UltraCode-Shim is a local proxy written in Python that gives Claude Code's UltraCode mode to any AI model you already pay for. Instead of being locked into Anthropic's infrastructure, you point Claude Code at the shim and it wraps your requests with the UltraCode envelope (xhigh effort, adaptive thinking, high token limits) before routing them to your chosen backend. You configure everything in a single config.json file, and the shim handles the protocol translation between Anthropic's API format and OpenAI-compatible endpoints.

Why is it gaining traction?

The hook is simple: UltraCode mode is expensive and exclusive, but this project lets you get the same deep-reasoning harness on cheaper or locally-hosted models. Developers are tired of being told "use Claude Code with UltraCode" only to discover the pricing is prohibitive. The shim also supports GPT-5.5 via Codex login (no API key needed), which is a significant draw. Setup is minimal -- no pip install, just Python 3.8+ and a config file.

Who should use this?

Developers who want Claude Code's workflow and deep-reasoning capabilities but prefer to use models they already pay for (DeepSeek, OpenRouter, local Ollama instances). Teams evaluating whether UltraCode is worth the cost can use this to test the experience on a budget first. It's also useful for developers who want to run Codex's GPT-5.5 through Claude Code's interface without managing separate API keys.

Verdict

This is a clever hack that solves a real pain point, and the documentation is thorough enough that even non-experts can set it up. At 44 stars it is early-stage, and the credibility score of 0.800000011920929% reflects that maturity. If you want to experiment with UltraCode-style workflows on your own terms, this is worth trying -- just understand it is community software with all the tradeoffs that implies.

Sign up to read the full AI review Sign Up Free

Similar repos coming soon.