v0.5.0 Release Notes

Released: 02 Feb 2026

MCPSDK v0.5.0 introduces a new redemption code system, interactive demonstrations for MCP tools, and enhanced visualization for AI agents, alongside significant system administration improvements.

🌟 What's New

• Redemption Code System - New /redeem page for users and management tools for admins
• Interactive Tool Demos - Experience MCP tools directly on the homepage without setup
• Enhanced Agent Visualization - See exactly how AI agents think and use tools in real-time
• System Admin Upgrades - Full attachment management and improved analytics

✨ New Features

🎁 Redemption Code System

Unlock features and credits with codes.

We've added a dedicated redemption page at /redeem where users can enter promotional or invite codes.

• Instant Validation: Real-time feedback on code validity.
• Seamless Flow: Works for both guests (with auto-redirect after login) and logged-in users.
• Celebration: Enjoy a confetti animation upon successful redemption!

System Admins can now manage these codes directly from the dashboard.

🎮 Interactive Tool Demos

Try before you build.

You can now experience MCP tool execution directly on the Onboarding page and Homepage without any configuration.

• Zero-Config Demo: Uses the @modelcontextprotocol/server-everything add tool as a demonstration.
• Live Interaction: Modify inputs and see results instantly.
• Code Visualization: See the JSON input and output to understand the data flow.

🤖 Agent Execution Visualization

See the "Thought Process" of AI Agents.

The Agent Demo Widget has been significantly enhanced to provide transparency into agent execution:

• Step-by-Step View: Watch as the agent plans, calls tools, and processes results.
• Tool Inspection: Expand steps to see the exact arguments sent to tools and the results returned.
• Visual Feedback: Clear icons and sections distinguish between "Agent Steps" and the "Final Response".

🐛 Bug Fixes & Improvements

• Registry Resilience: Improved app stability when the Registry URL is not configured or unreachable.
• Database Integrity: Fixed foreign key constraints in system logs and redemption code creation.
• Video Script Docs: Added comprehensive documentation for video generation scripts.
• Markdown Support: Enabled Markdown rendering in the About Page for better formatting.

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Questions or feedback? Visit our GitHub or check the documentation.

Happy building! 🚀