v0.90.0

Release Date: March 2, 2026

Note: this plugin is currently tested only on macOS.

Demo: Claude Code Debugs in Rider

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

Direct invite link: 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…:

https://mcp-steroid.jonnyzzz.com/updatePlugins.xml

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

Manual Download

• Download mcp-steroid-0.90.0-64b20612.zip — Plugin ZIP
• Release page on GitHub

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) - By downloading and using this plugin, you agree to the terms of the EULA.

Connecting to Cloud Agents

See 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! Your feedback directly shapes the development of MCP Steroid.