MCP Language Server vs Pharo Smalltalk Inter… | AllMCPs
Side-by-Side Model Context Protocol Comparison
MCP Language Server vs Pharo Smalltalk Interop MCP Server
In-depth architectural comparison of the MCP Language Server and Pharo Smalltalk Interop MCP Server MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
MCP Language Server
Developer Tools · Local stdio
Quality: 60/100 (Good) | Auth: No auth required
Pharo Smalltalk Interop MCP Server
Developer Tools · Local stdio
Quality: 56/100 (Good) | Auth: No auth required
Verdict Summary: Choose MCP Language Server if you need specialized Developer Tools tools running via a local process. Choose Pharo Smalltalk Interop MCP Server if your workspace requires Developer Tools integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
Choose MCP Language Server when:
You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
MCP Language Server helps MCP enabled clients navigate codebases more easily by giving them access to semantic tools like get definition, references, rename, and diagnostics.
Pharo Smalltalk integration enabling code evaluation, class/method introspection, package management, test execution, and project installation for interactive development with Pharo images.
Retrieves the complete source code definition of any symbol (function, type, constant, etc.) from your codebase.
references
Locates all usages and references of a symbol throughout the codebase.
diagnostics
Provides diagnostic information for a specific file, including warnings and errors.
hover
Display documentation, type hints, or other hover information for a given location.
rename_symbol
Rename a symbol across a project.
edit_file
Allows making multiple text edits to a file based on line numbers. Provides a more reliable and context-economical way to edit files compared to search and replace based edit tools.
Pharo Smalltalk Interop MCP Server Tools (22)
eval
get_class_source
get_method_source
get_class_comment
search_classes_like
search_methods_like
search_traits_like
search_implementors
search_references
search_references_to_class
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
MCP Language Server is categorized under Developer Tools and uses a local stdio subprocess. In contrast, Pharo Smalltalk Interop MCP Server belongs to Developer Tools using local stdio subprocess. Select MCP Language Server when you need capabilities focused on developer tools and Pharo Smalltalk Interop MCP Server when you require tools for developer tools.
