About Dotnet MCP Datetime Server
Dotnet MCP Datetime Server is an MCP server published by eyjolfurgudnivatne in the AI category: model Context Protocol (MCP) Server for date/time operations - production-ready C# script for Visual Studio 2026 Copilot Chat.
The repository has 1 stars and 0 forks, with the last commit 11 months ago. Six months or more without a commit doesn't mean the server is broken, but check the open issues before depending on it in production.
Install
git clone https://github.com/eyjolfurgudnivatne/dotnet-mcp-datetime-serverThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
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README
DateTime MCP Server
Model Context Protocol (MCP) Server for date/time operations - production-ready C# script for Visual Studio 2026 Copilot Chat.
🎯 Features
Provides 5 datetime tools via JSON-RPC 2.0:
- get_current_datetime - Get current date/time in any timezone
- get_iso8601_timestamp - Get UTC timestamp in ISO 8601 format
- add_days - Add or subtract days from a date
- is_weekend - Check if a date is a weekend
- get_week_number - Get ISO 8601 week number
🚀 Quick Start
1. Download
# Clone the repository
git clone https://github.com/eyjolfurgudnivatne/dotnet-mcp-datetime-server.git
cd dotnet-mcp-datetime-server
2. Configure
Create .mcp.json in your workspace root:
{
"inputs": [],
"servers": {
"datetime": {
"type": "stdio",
"command": "dotnet",
"args": ["DateTimeMcpServer.cs"],
"env": {}
}
}
}
3. Activate in VS 2026
- Open Copilot Chat in Visual Studio
- Click the tool icon (⚙️ bottom of chat)
- Expand "datetime" under "Added"
- Check the tools you want to use
- Start asking datetime questions!
📖 Example Usage
You: What's today's date?
Copilot: Today is Saturday, November 29, 2025 (week 48)
You: Is it weekend?
Copilot: Yes! It's Saturday, November 29, 2025
You: What day was 2 days ago?
Copilot: 2 days ago was Thursday, November 27, 2025
🔧 Requirements
- .NET 10 or later
- Visual Studio 2026 (November 2025 Feature Update or later)
- GitHub Copilot subscription
📝 Technical Highlights
- ✅ Zero warnings - IL2026/IL3050 eliminated with JSON Source Generation
- ✅ AOT-friendly - Full ahead-of-time compilation support
- ✅ No build required - Runs directly as C# script
- ✅ Production-ready - MCP-compliant with proper error handling
- ✅ Stdout-safe - No console logging pollution
🏗️ Extending
Add new tools in 4 steps:
- Add method to
DateTimeToolsclass - Add tool definition in
ListTools() - Add case in
CallTool()switch - Register return types in
McpJsonContext
🐛 Troubleshooting
Tools not appearing?
- Restart Visual Studio
- Check
.mcp.jsonpath is relative to workspace root
"Failed" when calling tools?
- Ensure all return types registered in
McpJsonContext - Verify no console output (logging disabled)
Server shows "Cached"?
- Normal! Server starts on-demand when you call tools
📚 Resources
🤝 Contributing
Contributions welcome! Please open an issue or PR.
📄 License
MIT License - free for any use, commercial or personal.
🎉 Acknowledgments
Built with ☕ and persistence during a Saturday research session.
Special thanks to the debugging journey that made this possible!
Author: ARKo AS - AHelse Development Team
Date: November 29, 2025
Status: Production-ready ✅
README copy captured when this server was indexed; it may lag the repository. The original is authoritative.