---
title: "v0.90.0"
description: "Rider debugger demo, first DPAIA A/B metrics, prompt platform rework, Rider/debugger workflow maturity"
aliases:
  - /release-0.90.0/
---

<div class="success">
<p><strong>MCP Steroid v0.90.0 is here!</strong> This release adds Rider debugger workflow coverage, publishes first DPAIA A/B metrics, reworks the prompt platform, and improves build and integration infrastructure.</p>
</div>

**Release Date:** March 2, 2026

Note: this plugin is currently tested only on macOS.

## Demo: Claude Code Debugs in Rider

<iframe width="560" height="315" src="https://www.youtube.com/embed/g73vZCO-YRw" frameborder="0" allowfullscreen></iframe>

In this video, Claude Code drives Rider debugger workflows through MCP Steroid, including breakpoint setup, debugger control, and IDE-driven test execution.

## Reporting issues

Use "Collect Logs and Diagnostics Data" action in IntelliJ
to collect information about the problem.
Review the log file for specific problem.

## Discord Community

Message Eugene on LinkedIn for a Discord invite: [linkedin.com/in/jonnyzzz](https://linkedin.com/in/jonnyzzz)

Direct invite link: [discord.gg/e9qgQ7NeTC](https://discord.gg/e9qgQ7NeTC)

That is the best place to discuss the plugin, ideas, features.

## Download

### Custom Plugin Repository (Recommended)

Add this URL in **Settings** -> **Plugins** -> ⚙️ -> **Manage Plugin Repositories...**:

<pre style="background: rgba(40, 167, 69, 0.1); padding: 0.5rem 1rem; border-radius: 4px; user-select: all;">https://mcp-steroid.jonnyzzz.com/updatePlugins.xml</pre>

The IDE will find the plugin and notify you when updates are available.

### Manual Download

- **[Download mcp-steroid-0.90.0-64b20612.zip](https://github.com/jonnyzzz/mcp-steroid/releases/download/0.90.0/mcp-steroid-0.90.0-64b20612.zip)** — Plugin ZIP
- [Release page on GitHub](https://github.com/jonnyzzz/mcp-steroid/releases/tag/0.90.0)

SHA-256: `b749a8b4394c3314082be21d79ecb0ac990b64db6979e045bf7e4af5eca272da`

1. Download the `.zip` file above
2. In IntelliJ IDEA, go to **Settings** -> **Plugins** -> ⚙️ -> **Install Plugin from Disk...**
3. Select the downloaded ZIP file
4. Restart the IDE

**[End User License Agreement (EULA)](https://mcp-steroid.jonnyzzz.com/EULA)** - By downloading and using this plugin, you agree to the terms of the EULA.

## Connecting to Cloud Agents

See [Getting Started](https://mcp-steroid.jonnyzzz.com/docs/getting-started/).

## Supported AI Agents

Claude Code, Codex, Gemini, Cursor, and any other coding agent that supports the latest MCP via HTTP Streaming.

## Highlights

### DPAIA Arena: First Success Metrics

As of March 2, 2026, the first completed A/B comparison set shows:

- Fix rate: `4/4` with MCP Steroid and `4/4` without MCP
- Average agent time: `412s` with MCP vs `526s` without MCP
- Net speedup: MCP was `22%` faster on average (`114s` gain per case)
- Cost: MCP was about `10%` cheaper across this 4-test experiment set
- Strongest gains were on complex multi-file tasks (`21-27%` faster), while simple search-and-replace tasks were effectively neutral

### Prompt Platform Rework

- Added a dedicated `prompts-api` module (`ArticlePart`, `IdeFilter`, `PromptsContext`)
- Reworked generation around article parts with computed filters
- Migrated prompt articles to the single-article model with line-2 filters and fence annotations, including multi-IDE filter support
- Replaced SkillCatalog YAML frontmatter with article properties and removed obsolete filter code paths
- Moved prompt quality gates into the prompts pipeline (`KtBlock` compilation and debugger prompt quality coverage)

### Rider and Debugger Workflow Maturity

- Added Rider coverage to IntelliJ debugger support with dedicated Rider integration/debugger test flows
- Introduced RLVR-based Rider debugger prompt iteration workflows
- Added Rider playground coverage for interactive debugging sessions
- Improved debugger prompts for event-driven suspension, idempotent breakpoints, and Rider/.NET expression handling
- Added run-test-at-caret workflows and fixed action IDs/caret targeting in debugger demos

## Release Notes Summary

### Additional Validations

- Added article quality contract tests and stricter prompt content checks
- Updated prompt examples to compilable fences and replaced deprecated IntelliJ 2025.3 API usages
- Included Kotlin compiler version in `KtBlock` compilation cache keys to prevent stale cache reuse
- Hardened release/update validation with strict release URL and asset checks

### Build and Infrastructure

- Extracted `intellij-downloader` and `kotlin-cli` modules and moved related tests to new boundaries
- Fixed IDE downloader platform resolution in containerized runs (correct archive per OS)
- Improved integration-run stability via warm snapshot bootstrap hardening and test-suite parallelism controls
- Fixed ScriptExecutor timeout test behavior
- Excluded Docker CLI tests from the default fast suite

## Feedback

We're actively learning what content and features work best for the plugin. Your feedback is invaluable!

If you encounter any issues or have suggestions, please let us know in [GitHub Issues](https://github.com/jonnyzzz/mcp-steroid/issues)! Your feedback directly shapes the development of MCP Steroid.

<section class="feedback-section">
<div class="cta-card">
<h2 class="section-title">Share Feedback with Eugene</h2>
<p>Tell Eugene what works and what should improve in early access releases.</p>
<p>Connect on <a href="https://linkedin.com/in/jonnyzzz" target="_blank" rel="noopener">LinkedIn</a> or <a href="https://x.com/jonnyzzz" target="_blank" rel="noopener">X</a>.</p>
</div>
</section>

## Support the Project

This project needs funding to continue development, testing, and support.

[![GitHub Sponsors](https://img.shields.io/badge/GitHub-Sponsors-EA4AAA?logo=githubsponsors&logoColor=white)](https://github.com/sponsors/jonnyzzz)

- Sponsor MCP Steroid: [github.com/sponsors/jonnyzzz](https://github.com/sponsors/jonnyzzz)
- Contact Eugene on LinkedIn: [linkedin.com/in/jonnyzzz](https://linkedin.com/in/jonnyzzz)

---

*Thank you for using MCP Steroid!*
