Check for tool name length

.github/CODEOWNERS

@@ -147,7 +147,7 @@
 # ServiceOwners:                       @smritiy @srnagar @jongio @zaaslam
 
 # PRLabel: %tools-ManagedLustre
-/tools/Azure.Mcp.Tools.ManagedLustre/                        @wolfgang-desalvador @microsoft/azure-mcp
+/tools/Azure.Mcp.Tools.ManagedLustre/  @wolfgang-desalvador @microsoft/azure-mcp
 # ServiceLabel: %tools-ManagedLustre
 # ServiceOwners:                       @wolfgang-desalvador
 
@@ -245,3 +245,9 @@
 
 # ServiceLabel: %tools-ConfidentialLedger
 # ServiceOwners:                       @taicchoumsft @ivarprudnikov
+
+# PRLabel: %tools-ResourceHealth
+/tools/Azure.Mcp.Tools.ResourceHealth/      @pkaza-msft @microsoft/azure-mcp
+
+# ServiceLabel: %tools-ResourceHealth
+# ServiceOwners:                       @pkaza-msft @microsoft/azure-mcp

.vscode/cspell.json

@@ -418,7 +418,6 @@
         "functionapp",
         "functionapps",
         "germanynorth",
-        "gethealth",
         "grpcio",
         "gsaascend",
         "gsamas",

eng/scripts/Analyze-Code.ps1

@@ -42,6 +42,18 @@ try {
         Write-Host "✅ Tool description evaluation did not detect any issues."
     }
 
+    # Run tool name length validation
+    $toolNameResult = & "$PSScriptRoot/Test-ToolNameLength.ps1"
+
+    if ($LASTEXITCODE -ne 0) {
+        Write-Host "❌ Tool name length validation failed"
+        Write-Host "Maximum Length Allowed: $($toolNameResult.MaxAllowed). $($toolNameResult.ViolationCount) tool(s) exceeding this limit. Review the above output for details."
+        $hasErrors = $true
+    } else {
+        Write-Host "✅ Tool name length validation passed."
+        Write-Host "All tools are within the $($toolNameResult.MaxAllowed) character limit."
+    }
+
     if($hasErrors) {
         exit 1
     }

eng/scripts/Test-ToolNameLength.ps1

@@ -0,0 +1,234 @@
+#!/usr/bin/env pwsh
+#Requires -Version 7
+
+<#
+.SYNOPSIS
+    Validates that all tool names don't exceed the maximum length
+
+.DESCRIPTION
+    This script validates that tool name length doesn't exceed 48 characters.
+    
+    Tool name format: {area}_{resource}_{operation}
+    Example: "managedlustre_filesystem_subnetsize_validate-length" = 50 chars (EXCEEDS)
+    The limit does NOT include the MCP server prefix (e.g., "AzureMCP-AllTools-").
+
+.PARAMETER MaxLength
+    Maximum allowed length for tool names (default: 48)
+
+.PARAMETER ServerName
+    Name of the server to test. If not specified, all servers will be tested.
+#>
+
+param(
+    [int]$MaxLength = 48,
+    [string]$ServerName
+)
+
+$ErrorActionPreference = 'Stop'
+
+. "$PSScriptRoot/../common/scripts/common.ps1"
+$RepoRoot = $RepoRoot.Path.Replace('\', '/')
+
+if ($ServerName) {
+    Write-Host "Validating tool name length for $ServerName"
+} else {
+    Write-Host "Validating tool name length for all servers"
+}
+Write-Host "Max length: $MaxLength characters"
+Write-Host ""
+
+# Use the build infrastructure - New-BuildInfo.ps1 and Build-Code.ps1
+$buildInfoPath = "$RepoRoot/.work/build_info.json"
+$buildOutputPath = "$RepoRoot/.work/build"
+
+# Clean up previous build artifacts
+Remove-Item -Path $buildOutputPath -Recurse -Force -ErrorAction SilentlyContinue -ProgressAction SilentlyContinue
+
+# Create build metadata
+& "$RepoRoot/eng/scripts/New-BuildInfo.ps1" `
+    -ServerName $ServerName `
+    -PublishTarget none `
+    -BuildId 12345
+
+if ($LASTEXITCODE -ne 0) {
+    Write-Error "Failed to create build info"
+    exit 1
+}
+
+# Build the server
+& "$RepoRoot/eng/scripts/Build-Code.ps1"
+
+if ($LASTEXITCODE -ne 0) {
+    Write-Error "Failed to build $ServerName"
+    exit 1
+}
+
+# Read build_info.json to get server information
+$buildInfo = Get-Content $buildInfoPath -Raw | ConvertFrom-Json -AsHashtable
+
+# Get servers to test
+$serversToTest = $buildInfo.servers
+if (-not $serversToTest -or $serversToTest.Count -eq 0) {
+    Write-Error "No servers found in build_info.json"
+    exit 1
+}
+
+Write-Host "Testing $($serversToTest.Count) server(s)"
+Write-Host ""
+
+# Track overall results
+$overallViolations = @()
+$overallSuccess = $true
+$testedServers = 0
+$skippedServers = 0
+
+foreach ($serverInfo in $serversToTest) {
+    $currentServerName = $serverInfo.name
+    Write-Host "=================================================="
+    Write-Host "Testing: $currentServerName"
+    Write-Host "=================================================="
+
+    # Get the executable name and find the built platform
+    $executableName = $serverInfo.cliName + $(if ($IsWindows) { ".exe" } else { "" })
+
+    # Find the first platform that was actually built
+    $builtPlatform = $serverInfo.platforms | Where-Object { 
+        Test-Path "$buildOutputPath/$($_.artifactPath)" 
+    } | Select-Object -First 1
+
+    if (-not $builtPlatform) {
+        Write-Warning "No built platform found for $currentServerName - skipping"
+        $skippedServers++
+        Write-Host ""
+        continue
+    }
+
+    $executablePath = "$buildOutputPath/$($builtPlatform.artifactPath)/$executableName"
+
+    if (-not (Test-Path $executablePath)) {
+        Write-Error "Executable not found at $executablePath for $currentServerName"
+        exit 1
+    }
+
+    # Try to get tools - some servers may not support 'tools list'
+    Write-Host "Loading tools from $currentServerName"
+    try {
+        $toolsJson = & $executablePath tools list 2>&1 | Out-String
+
+        if ($LASTEXITCODE -ne 0) {
+            Write-Warning "$currentServerName 'tools list' command failed with exit code $LASTEXITCODE (may have no tools) - skipping"
+            $skippedServers++
+            Write-Host ""
+            continue
+        }
+
+        if ([string]::IsNullOrWhiteSpace($toolsJson)) {
+            Write-Warning "No output received from '$currentServerName tools list' - skipping"
+            $skippedServers++
+            Write-Host ""
+            continue
+        }
+
+        $toolsResult = $toolsJson | ConvertFrom-Json
+        $tools = $toolsResult.results
+
+        if ($null -eq $tools -or $tools.Count -eq 0) {
+            Write-Warning "No tools found in $currentServerName - skipping"
+            $skippedServers++
+            Write-Host ""
+            continue
+        }
+
+        Write-Host "Loaded $($tools.Count) tools"
+        $testedServers++
+
+        # Validate tool name lengths
+        $violations = @()
+        $maxToolNameLength = 0
+
+        foreach ($tool in $tools) {
+            $toolName = $tool.command -replace ' ', '_'
+            $fullLength = $toolName.Length
+
+            if ($fullLength -gt $maxToolNameLength) {
+                $maxToolNameLength = $fullLength
+            }
+
+            if ($fullLength -gt $MaxLength) {
+                $violations += [PSCustomObject]@{
+                    Server = $currentServerName
+                    ToolName = $toolName
+                    Command = $tool.command
+                    Length = $fullLength
+                    Excess = $fullLength - $MaxLength
+                }
+            }
+        }
+
+        Write-Host "Longest tool name: $maxToolNameLength characters"
+
+        if ($violations.Count -eq 0) {
+            Write-Host "All $($tools.Count) tool names are within the $MaxLength character limit!" -ForegroundColor Green
+        }
+        else {
+            Write-Host "Found $($violations.Count) violation(s):" -ForegroundColor Red
+            $violations | ForEach-Object {
+                Write-Host "  - $($_.ToolName) ($($_.Length) chars, exceeds by $($_.Excess))" -ForegroundColor Red
+            }
+            $overallViolations += $violations
+            $overallSuccess = $false
+        }
+    }
+    catch {
+        Write-Warning "Error testing $currentServerName : $_"
+        Write-Host "This server may not support tool validation - skipping"
+        $skippedServers++
+    }
+
+    Write-Host ""
+}
+
+# Final summary
+Write-Host "=================================================="
+Write-Host "SUMMARY"
+Write-Host "=================================================="
+Write-Host "Servers tested: $testedServers"
+Write-Host "Servers skipped: $skippedServers"
+Write-Host "Total violations: $($overallViolations.Count)"
+Write-Host ""
+
+if ($overallViolations.Count -gt 0) {
+    Write-Host "VIOLATIONS FOUND:" -ForegroundColor Red
+    Write-Host ""
+
+    $overallViolations | Sort-Object -Property Length -Descending | ForEach-Object {
+        Write-Host "  Server: $($_.Server)"
+        Write-Host "  Tool: $($_.ToolName)"
+        Write-Host "  Command: $($_.Command)"
+        Write-Host "  Length: $($_.Length) characters (exceeds by $($_.Excess))"
+        Write-Host ""
+    }
+}
+
+# Prepare return object
+$result = [PSCustomObject]@{
+    MaxAllowed     = $MaxLength
+    ServersTested  = $testedServers
+    ServersSkipped = $skippedServers
+    ViolationCount = $overallViolations.Count
+}
+
+$result
+
+if ($overallSuccess -and $testedServers -gt 0) {
+    Write-Host "All tested servers passed validation!" -ForegroundColor Green
+    exit 0
+}
+elseif ($testedServers -eq 0) {
+    Write-Error "No servers were successfully tested. All $($skippedServers) server(s) were skipped."
+    exit 1
+}
+else {
+    Write-Host "Validation failed - see violations above" -ForegroundColor Red
+    exit 1
+}

eng/tools/ToolDescriptionEvaluator/prompts.json

@@ -774,10 +774,10 @@
   "azmcp_virtualdesktop_hostpool_list": [
     "List all host pools in my subscription"
   ],
-  "azmcp_virtualdesktop_hostpool_sessionhost_list": [
+  "azmcp_virtualdesktop_hostpool_session_list": [
     "List all session hosts in host pool <hostpool_name>"
   ],
-  "azmcp_virtualdesktop_hostpool_sessionhost_usersession-list": [
+  "azmcp_virtualdesktop_hostpool_session_user_list": [
     "List all user sessions on session host <sessionhost_name> in host pool <hostpool_name>"
   ],
   "azmcp_workbooks_create": [

servers/Azure.Mcp.Server/CHANGELOG.md

@@ -13,6 +13,7 @@ The Azure MCP Server updates automatically by default whenever a new release com
 ### Other Changes
 
 - Updated how `IsServerCommandInvoked` telemetry is captured to more correctly report whether learning or tool call was performed. [[#874](https://github.com/microsoft/mcp/pull/874)]
+- Added tool name length validation to ensure all tool names stay within 48 character limit for compatibility with MCP clients. [[#881](https://github.com/microsoft/mcp/pull/881)]
 
 ## 0.9.4 (2025-10-17)