v4.2.0

deepseek-ai/DeepSeek-OCR-2v4.2.0Jul 20, 2025by ravitemer

AI Summary

This release brings full compatibility with VS Code configuration files. It supports the new .vscode/mcp.json format, VS Code environment variables, and JSON5 syntax for better flexibility.

Key Highlights

Full support for .vscode/mcp.json configuration
VS Code environment variable syntax support
JSON5 support for config files
Seamless migration path for existing configs
Predefined variables support

New Features

Support for 'servers' key alongside 'mcpServers'
VS Code environment variable syntax
Predefined variables support
JSON5 support (comments and trailing commas)
MCP_HUB_ENV input variables support

Full Release Notes


### Added

- **VS Code Configuration Compatibility**: Full support for `.vscode/mcp.json` configuration format
  - Support for `"servers"` key alongside existing `"mcpServers"` key
  - VS Code-style environment variable syntax: `${env:VARIABLE_NAME}`
  - VS Code predefined variables: `${workspaceFolder}`, `${userHome}`, `${pathSeparator}`, `${workspaceFolderBasename}`, `${cwd}`, `${/}`
  - VS Code input variables via `MCP_HUB_ENV`: support for `${input:variable-id}` syntax
  - JSON5 support for config files: comments and trailing commas now allowed
  - Seamless migration path: existing `.vscode/mcp.json` files work directly with MCP Hub

### Enhanced

- **Configuration System**: Enhanced environment variable resolution with VS Code compatibility
  - Proper priority system: predefined variables → process.env → MCP_HUB_ENV
  - Predefined variables available for placeholder resolution but not passed to server environments
  - Comprehensive test coverage for all VS Code variable types and scenarios