---
id: post/demiliani-com/13391
type: post
title: "Dynamics 365 Business Central: BCMCPProxy vNext"
summary: BCMCPProxy vNext is a cross-platform .NET proxy that bridges Model Context Protocol clients with Business Central's API, upgraded from a Windows-only proof-of-concept to support macOS and Windows with improved performance, security, and modern .NET 10 architecture.
tier: community
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  - authentication
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    quote: BcMCPProxy is an (unsupported) .NET project that provides a server proxy that bridges MCP clients with Microsoft Dynamics 365 Business Central's API.
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    title: "Dynamics 365 Business Central: BCMCPProxy vNext"
    date: "2026-02-13"
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    quote: The improved BCMCPProxy (here called BCMCPProxy vNext) represents an evolution from the original Windows-only proof-of-concept to a more robust solution.
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post_id: "13391"
source_id: demiliani-com
source_name: Stefano Demiliani
url: https://demiliani.com/2026/02/13/dynamics-365-business-central-bcmcpproxy-vnext/
published_at: "2026-02-13T11:52:08.000Z"
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  - text: BcMCPProxy is an (unsupported) .NET project that provides a server proxy that bridges MCP clients with Microsoft Dynamics 365 Business Central's API.
    why_it_matters: Explains the core purpose of the proxy as a bridge between MCP protocol clients and Business Central's API
  - text: The improved BCMCPProxy (here called BCMCPProxy vNext) represents an evolution from the original Windows-only proof-of-concept to a more robust solution.
    why_it_matters: Clarifies the progression from original Windows-only implementation to a production-ready cross-platform version
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# Dynamics 365 Business Central: BCMCPProxy vNext

[Read the post](https://demiliani.com/2026/02/13/dynamics-365-business-central-bcmcpproxy-vnext/) · Stefano Demiliani (Stefano Demiliani, MVP) · 2026-02-13 · 535 words · tier community · reviewed (checked by Opus)

> BCMCPProxy vNext is a cross-platform .NET proxy that bridges Model Context Protocol clients with Business Central's API, upgraded from a Windows-only proof-of-concept to support macOS and Windows with improved performance, security, and modern .NET 10 architecture.

## Key points

- BCMCPProxy vNext evolved from the original Windows-only Microsoft project to support both Windows and macOS with .NET 10 and C# 13
- Device code flow authentication provides browser-based sign-in with automatic clipboard copying and token caching across sessions
- Performance improved 40-67% through sync-over-async elimination, async I/O, and better memory management
- Cross-platform support includes Intel x64, Apple Silicon ARM64, and ARM64 processors through unified dotnet build
- Security enhanced by removing hardcoded credentials and using platform-native secure storage for token caching

## Quotes

- "BcMCPProxy is an (unsupported) .NET project that provides a server proxy that bridges MCP clients with Microsoft Dynamics 365 Business Central's API." (Explains the core purpose of the proxy as a bridge between MCP protocol clients and Business Central's API)
- "The improved BCMCPProxy (here called BCMCPProxy vNext) represents an evolution from the original Windows-only proof-of-concept to a more robust solution." (Clarifies the progression from original Windows-only implementation to a production-ready cross-platform version)

## Context

- Features: Model Context Protocol support, Device code flow authentication, Token caching, Cross-platform deployment, Claude Desktop integration, MSAL authentication, Async I/O, Secure credential storage
- Versions: .NET 10, .NET 8, C# 13

Source: Stefano Demiliani, community blog. Summary, key points and quotes are derived (CONTENT-NOTICE.md); read the original for the full text.