This is an early attempt at making an MCP server to control the Pulsar editor. The goal is to enable an LLM to assist with software development in Pulsar using a tool like AnythingLLM as a chat client.

ppm install https://github.com/drunnells/pulsar-edit-mcp-server

After the Pulsar package is installed, set the MCP server to lisen in Packages->MCP Server->Listen

You will see a "MCP:On" tile in the lower left of the Pulsar editor.

Your LLM MCP Client will need to have the below mcpServers configuration.

{
        "mcpServers": {
                "pulsar-edit-mcp-server": {
                        "url": "http://localhost:3000/mcp",
                        "disabled": false,
                        "alwaysAllow": [],
                        "type": "streamable"
                }
        }
}

• Replace Text - Search the active editor for query and replace it with replacement.
• Get Context Around - Return up-to radiusLines lines before and after the N-th match of query in the active editor. Useful for content-aware edits.
• Find Text - Search the active editor for a substring or regular expression and return the positions of each occurrence (up to maxMatches).
• Replace Document - Replace entire contents of the document
• Insert Line - Insert a blank line at row
• Delete Line - Delete a single line
• Delete Line Range - Delete a range of lines
• Get Selection - Get the selected text
• Get Document - Get an array of each line in the document with line numbers
• Get Raw Document - Get the raw content of the entire current document
• Get Line Count - Get the total number of lines in the current document
• Get Filename - Get the filename of the current document
• Get Full Path - Get the full path of the current document
• Get Project Files - Get all project files in the current project
• Open File - Open a file (or move to that file's tab if already open)
• Undo - Undo the last change in the editor
• Redo - Redo the last undo in the editor

I've written a quick blog post around my motivations and some of the challenges that I initially encountered.

This project is still in its very early stages. I'm hoping to turn it into something useful one day. If you’re interested in helping shape it, any contribution is welcome and appreciated!