Introduces a new MCP server mode to the ABP CLI, including a JSON-RPC server implementation, health checks, and configuration output. Adds supporting services for HTTP communication and configuration models, and updates the CLI to suppress the banner for MCP commands to avoid corrupting the JSON-RPC stream.

Introduces McpToolDefinition model and McpToolsCacheService to fetch and cache tool definitions from the server, with fallback to cache if the server is unavailable. Updates McpServerService to dynamically register tools based on cached or fetched definitions, and adds related constants and paths. This enables more flexible and up-to-date tool management in the MCP server.

Introduces McpToolDefinitionValidator to validate and filter tool definitions before caching. Updates McpHttpClientService to support configurable MCP server URLs and sanitizes error messages. Enhances McpToolsCacheService to use validated tools, adds restrictive file permissions for cache, and improves error handling and logging. Updates CliConsts with new constants for MCP server configuration.

Enhanced error handling and user messaging in MCP HTTP client and server services, providing sanitized and user-friendly error responses for network, timeout, and unexpected errors. Updated MCP command to enforce license validation before tool execution. Improved cross-platform file permission handling in the tools cache service.

Added IMcpLogger interface and McpLogger implementation to provide structured logging for MCP operations, supporting log levels and file rotation. Replaced direct Console.Error logging with IMcpLogger in MCP-related services and commands. Log level is now configurable via the ABP_MCP_LOG_LEVEL environment variable, and logs are written to both file and stderr as appropriate.

Extracted license validation logic in McpCommand to a dedicated method for reuse and clarity. Improved executable path resolution by splitting logic into helper methods. In McpHttpClientService, centralized HTTP exception handling and replaced repeated code with a single method. Refactored tool invocation in McpServerService to use a dedicated handler, improving error handling and logging. Simplified log level parsing in McpLogger for better maintainability.

Updated the command option and help text from 'getconfig' to 'get-config' for consistency and improved readability.

Introduced ITelemetryService to McpCommand and added activity tracking using ActivityNameConsts.AbpCliCommandsMcp. Also updated ActivityNameConsts to include the new activity name constant for MCP command telemetry.

Replaced hardcoded TestServerUrl with awaitable GetMcpServerUrlAsync() in CallToolAsync, CheckServerHealthAsync, and GetToolDefinitionsAsync methods to ensure the correct server URL is used dynamically.

Extracted AbpMcpServerTool to its own file and improved tool name validation in McpHttpClientService. Enhanced error handling and logging, made cache validity configurable, and fixed typos in ActivityNameConsts for AbpCli command telemetry constants.

Deleted the hardcoded TestServerUrl constant from McpHttpClientService as it is no longer needed after testing.

Introduces CommandLineArgsExtensions for MCP command detection, removes McpToolDefinitionValidator, and updates MCP tool definition fetching to require a successful server connection. Cleans up unused environment variables, adds mcp-config.json support, and simplifies tool validation and caching logic. These changes improve reliability and maintainability of MCP command execution and tool management.

Replaces the hardcoded localhost URL with the cached server URL in GetMcpServerUrlAsync, enabling dynamic server address resolution.

Refactored McpLogger to use ILogger and Serilog for file logging, removing manual file handling and rotation. Enhanced debug logging in McpHttpClientService and added explicit tool name initialization from cache. Updated Program.cs to use a separate log file for MCP mode. Improved error logging in McpServerService for tool execution failures.

Introduces an optional OutputSchema property to McpToolDefinition and updates AbpMcpServerTool and McpServerService to handle and register tools with output schemas. This enables tools to define and expose their output schema alongside input schema for improved contract clarity.