Your Dev Console
for AI Engineering

Develop high-quality prompts without leaving your code editor.

Install the VS Code extension
Anthropic

Millions of developers use the Claude Console.
We put their console right into your code editor.

Before you deploy a prompt to production, test how it performs with realistic data.

Just prefix any prompt with a code comment like /* @prompt */ or //@prompt and Mind Rig will run it in your editor.

Build up collections to test against a broad range of scenarios instantly.

And compare all the results side-by-side.

And you can always upload test cases from a CSV file.

Or use a CSV file to export your test scenarios to other AI evaluation tools.

Mind Rig makes it easy to develop and deploy high-quality prompts when you're building AI features.

It's Free to Use
Start testing prompts immediately with no credit card required.
Access 100's of AI models from providers like OpenAI, Anthropic, and xAI.
Connect your Vercel AI Gateway API key and instantly unlock access to hundreds of models across every major provider.
It matches you editor's colour theme
Mind Rig seamlessly integrates with VS Code's (and it's clones) theming system, so it feels like a native part of your editor.
Works with any Programming language
Since you're working with prompts, not code execution, your programming language doesn't matter.

Frequently Asked Questions

What is Mind Rig?

Mind Rig is a VS Code extension that lets you generate, test, and evaluate AI prompts directly in your code editor. Instead of switching between your IDE, browser, and spreadsheets to test prompts, you can create test cases, run them against your prompts, and compare outputs without leaving VS Code.

How does Mind Rig help me write better prompts?

Mind Rig lets you test your prompts against multiple inputs at once and see all the results side-by-side. This means you can quickly spot patterns in failures, identify edge cases your prompt doesn't handle well, and iterate until you're confident it works across all scenarios—before you ship to production.

How is this different from the Claude Console or Anthropic's Workbench?

Mind Rig brings the same powerful prompt testing capabilities into your code editor. The key difference: you can work with your actual data structures, stay in your development environment, and integrate prompt testing directly into your coding workflow instead of managing it in a separate web interface.

Who is Mind Rig for?

Mind Rig is built for developers who are integrating AI into their applications and want to test prompts efficiently without breaking their flow. It's especially useful if you're tired of manually testing prompts, copying data between tools, or discovering prompt failures in production.

What LLM providers does Mind Rig support?

We recommend adding a Vercel AI Gateway to Mind Rig, which gives you access to hundreds of models from every major provider (Claude, GPT-4, Gemini, Llama, and more) through a single API key. This means you can test and compare different models without managing multiple API credentials or switching between platforms.

Does Mind Rig store my prompts or test data?

No. Mind Rig stores everything locally in your VS Code workspace—your prompts, test cases, and results never leave your machine unless you choose to commit them to your own Git repository. Test scenarios are saved as CSV files directly in your repo, giving you full control and making them easy to version control, share with your team, or back up however you prefer. We don't collect, store, or have access to any of your prompts or test data. Your API keys communicate directly with your chosen LLM providers, so your data stays between you and them.

What about pricing? How much does Mind Rig cost?

Mind Rig is completely free to use. You only pay for the API calls to your LLM provider through Vercel AI Gateway at their standard rates—and Vercel gives you $5 in free credits when you sign up to get started. There are no subscription fees, no per-seat charges, and no hidden costs—just install the extension, connect your Vercel Gateway account, and start testing prompts. We believe better prompt development tools should be accessible to every developer, whether you're a solo indie hacker or part of a large team.

Who's the team behind Mind Rig?

Mind Rig is built by two developers, Sasha and Josh, who were frustrated with the constant context-switching required to test AI prompts. We spent too many late nights copying prompts between browser tabs, losing our flow state, and shipping bugs we could have caught with better tooling. So we built Mind Rig to solve our own problem—and we're sharing it with the developer community because we believe everyone building with AI deserves tools that don't slow them down.

What if I need help or have a feature request?

We'd love to hear from you! If you run into issues or have ideas for features, you can:

Give Mind Rig a Try.

Install the VS Code extension