Microsoft Business Central MCP Server

Model Context Protocol (MCP) server for Microsoft Dynamics 365 Business Central. Provides AI assistants with direct access to Business Central data through properly formatted API v2.0 calls.

Features

• ✅ Correct API URLs: Uses proper /companies(id)/resource format (no ODataV4 segment)
• ✅ Zero Installation: Run with npx - no pre-installation required
• ✅ Azure CLI Auth: Leverages existing Azure CLI authentication
• ✅ Client Credentials Auth: Service-to-service authentication for AI agents
• ✅ Clean Tool Names: No prefixes, just get_schema, list_items, etc.
• ✅ Full CRUD: Create, read, update, and delete Business Central records

Installation

Using npx (Recommended)

No installation needed! Configure in Claude Desktop or Claude Code:

{
  "mcpServers": {
    "business-central": {
      "type": "stdio",
      "command": "cmd",
      "args": ["/c", "npx", "-y", "@knowall-ai/mcp-business-central"],
      "env": {
        "BC_URL_SERVER": "https://api.businesscentral.dynamics.com/v2.0/{tenant-id}/{environment}/api/v2.0",
        "BC_COMPANY": "Your Company Name",
        "BC_AUTH_TYPE": "azure_cli"
      }
    }
  }
}

Note for Windows: Use cmd with /c as shown above for proper npx execution.

Using Smithery

Install via Smithery:

npx -y @smithery/cli install @knowall-ai/mcp-business-central --client claude

Local Development

git clone https://github.com/knowall-ai/mcp-business-central.git
cd mcp-business-central
npm install
npm run build
node build/index.js

Configuration

Environment Variables

Variable	Required	Description	Example
BC_URL_SERVER	Yes	Business Central API base URL	https://api.businesscentral.dynamics.com/v2.0/{tenant}/Production/api/v2.0
BC_COMPANY	Yes	Company display name	KnowAll Ltd
BC_AUTH_TYPE	No	Authentication type (default: azure_cli)	azure_cli or client_credentials
BC_TENANT_ID	For client_credentials	Azure AD tenant ID	00000000-0000-0000-0000-000000000000
BC_CLIENT_ID	For client_credentials	App registration client ID	00000000-0000-0000-0000-000000000000
BC_CLIENT_SECRET	For client_credentials	App registration client secret	your-secret-value

Getting Your Configuration Values

1. Tenant ID: Find in Azure Portal → Azure Active Directory → Overview
2. Environment: Usually Production or Sandbox
3. Company Name: The display name shown in Business Central

Example URL format:

https://api.businesscentral.dynamics.com/v2.0/00000000-0000-0000-0000-000000000000/Production/api/v2.0

Authentication

Recommendation: Use azure_cli authentication - it's simpler to set up and more reliable. The client_credentials method is also supported but has known configuration challenges with Business Central's Microsoft Entra Applications setup. See docs/TROUBLESHOOTING.adoc for details.

Option 1: Azure CLI (Recommended)

The simplest and most reliable authentication method. Uses your existing Azure CLI login.

Prerequisites:

• Install Azure CLI: https://docs.microsoft.com/cli/azure/install-azure-cli
• Login: az login
• Verify access: az account get-access-token --resource https://api.businesscentral.dynamics.com

Configuration:

{
  "mcpServers": {
    "business-central": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@knowall-ai/mcp-business-central"],
      "env": {
        "BC_AUTH_TYPE": "azure_cli",
        "BC_URL_SERVER": "https://api.businesscentral.dynamics.com/v2.0/{tenant-id}/Production/api/v2.0",
        "BC_COMPANY": "My Company"
      }
    }
  }
}

Option 2: Client Credentials (Service-to-Service)

For automated systems that need to run without user interaction. This method uses OAuth 2.0 client credentials flow.

Note: This method has known configuration challenges. The Business Central "Microsoft Entra Applications" setup can be complex and the application user creation may not work as expected. See docs/TROUBLESHOOTING.adoc for detailed guidance.

Setup Overview:

1. Create Azure App Registration:

   • Go to Azure Portal → Azure Active Directory → App registrations
   • Create new registration (single tenant)
   • Add API permission: Dynamics 365 Business Central → app_access (Application permission, NOT Delegated)
   • Grant admin consent for the permission
   • Add redirect URI: https://businesscentral.dynamics.com/OAuthLanding.htm

2. Generate Client Secret:

   • In your app registration, go to Certificates & secrets
   • Create a new client secret and save it securely

3. Configure Business Central:

   • In Business Central, search for "Microsoft Entra Applications"
   • Click + New and enter your app's Client ID
   • Set a Description (this becomes the application user name)
   • Set State to "Enabled" - you should see "A user named '[Description]' will be created"
   • Add permission sets: D365 BUS FULL ACCESS (recommended) or D365 READ
   • Leave Company field blank for all companies access
   • Click "Grant Consent"

4. Verify Setup:

   • The application user should appear in the Users list in Business Central
   • If not, see docs/TROUBLESHOOTING.adoc for solutions

References:

• Microsoft: Service-to-service authentication
• Business Central API Authentication

Available Tools

1. get_schema

Get OData metadata for a Business Central resource.

Parameters:

• resource (string, required): Resource name (e.g., customers, contacts, salesOpportunities)

Example:

{
  "resource": "customers"
}

2. list_items

List items with optional filtering and pagination.

Parameters:

• resource (string, required): Resource name
• filter (string, optional): OData filter expression
• top (number, optional): Maximum number of items to return
• skip (number, optional): Number of items to skip for pagination

Example:

{
  "resource": "customers",
  "filter": "displayName eq 'Contoso'",
  "top": 10
}

3. get_items_by_field

Get items matching a specific field value.

Parameters:

• resource (string, required): Resource name
• field (string, required): Field name to filter by
• value (string, required): Value to match

Example:

{
  "resource": "contacts",
  "field": "companyName",
  "value": "Contoso Ltd"
}

4. create_item

Create a new item in Business Central.

Parameters:

• resource (string, required): Resource name
• item_data (object, required): Item data to create

Example:

{
  "resource": "contacts",
  "item_data": {
    "displayName": "John Doe",
    "companyName": "Contoso Ltd",
    "email": "john.doe@contoso.com"
  }
}

5. update_item

Update an existing item.

Parameters:

• resource (string, required): Resource name
• item_id (string, required): Item ID (GUID)
• item_data (object, required): Fields to update

Example:

{
  "resource": "customers",
  "item_id": "1366066e-7688-f011-b9d1-6045bde9b95f",
  "item_data": {
    "displayName": "Updated Name"
  }
}

6. delete_item

Delete an item from Business Central.

Parameters:

• resource (string, required): Resource name
• item_id (string, required): Item ID (GUID)

Example:

{
  "resource": "contacts",
  "item_id": "a1b2c3d4-e5f6-g7h8-i9j0-k1l2m3n4o5p6"
}

Common Resources

• companies - Company information
• customers - Customer records
• contacts - Contact records
• salesOpportunities - Sales opportunities
• salesQuotes - Sales quotes
• salesOrders - Sales orders
• salesInvoices - Sales invoices
• items - Product/service items
• vendors - Vendor records

Troubleshooting

See docs/TROUBLESHOOTING.adoc for detailed troubleshooting guides covering:

• Authentication issues (401 errors, token problems)
• client_credentials setup challenges and known issues
• Company not found errors
• Environment-specific configuration (Production vs Sandbox)

Development

# Install dependencies
npm install

# Build TypeScript
npm run build

# Watch mode for development
npm run dev

License

MIT

Contributing

Issues and pull requests welcome at https://github.com/knowall-ai/mcp-business-central

Related Projects

• MCP Specification: modelcontextprotocol.io