How do I install the claudesmalltalk mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `SMALLTALK_MCP_CONFIG` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

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ClaudeSmalltalk MCP Server

MCP server for AI interaction with live Smalltalk images

Local serverstdioPython

What is the ClaudeSmalltalk MCP Server?

MCP server for AI interaction with live Smalltalk images

What you get

Connect Claude Desktop to a live Smalltalk programming environment. Browse classes, evaluate expressions, define methods, and run autonomous code review — all against a running Squeak or Cuis image.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
smalltalk_evaluate	Execute Smalltalk code and return result
smalltalk_browse	Get class metadata (superclass, ivars, methods)
smalltalk_method_source	View source code of a method
smalltalk_define_class	Create or modify a class definition
smalltalk_define_method	Add or update a method
smalltalk_delete_method	Remove a method from a class
smalltalk_delete_class	Remove a class from the system
smalltalk_list_classes	List classes matching a prefix
smalltalk_hierarchy	Get superclass chain
smalltalk_subclasses	Get immediate subclasses
smalltalk_list_categories	List all system categories
smalltalk_classes_in_category	List classes in a category
smalltalk_save_image	Save the current image in place
smalltalk_save_as_new_version	Save image/changes as next version number

How to install the ClaudeSmalltalk MCP Server

{
  "mcpServers": {
    "claudesmalltalk": {
      "command": "uvx",
      "args": ["httpx"],
      "env": {
        "SMALLTALK_MCP_CONFIG": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

Variable	Description	Required
SMALLTALK_MCP_CONFIG	Configuration value read at startup.	Optional

Example prompts to try

“Use ClaudeSmalltalk to smalltalk evaluate.”
“Use ClaudeSmalltalk to smalltalk browse.”
“Use ClaudeSmalltalk to smalltalk method source.”

Frequently asked questions

MCP server for AI interaction with live Smalltalk images Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.

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