codemirror-mcpSAFE

A CodeMirror extension that implements the Model Context Protocol (MCP) for resource mentions and prompt commands.

Features

• Resource Completion: Autocomplete for @resource mentions
• Resource Decorations: Visual styling for @resource mentions with click handling
• Prompt Completion: Autocomplete for /prompt commands
• Theme Support: Customizable styling

Installation

npm install @marimo-team/codemirror-mcp @modelcontextprotocol/sdk
# or
pnpm add @marimo-team/codemirror-mcp @modelcontextprotocol/sdk

Peer Dependencies

This module requires the following peer dependencies:

• @codemirror/view
• @codemirror/state
• @modelcontextprotocol/sdk

Usage

import { WebSocketClientTransport } from "@modelcontextprotocol/sdk/client/websocket.js";
import { mcpExtension, extractResources } from '@marimo-team/codemirror-mcp';
import { EditorView } from '@codemirror/view';

const transport = new WebSocketClientTransport(new URL('ws://localhost:8080'));

const view = new EditorView({
extensions: [
// ... other extensions

mcpExtension({
// Required options
transport: transport,

// Optional options
logger: console,
clientOptions: {
name: 'your-client',
version: '1.0.0'
},
onResourceClick: (resource) => {
// Open resource
// e.g. open in a tab, etc.
},
}),

// Handle submit
keymap.of([
{
key: 'Enter',
run: () => {
const resources = extractResources(view);
const formattedResources = resources
.map(
({ resource }) =>
`${resource.uri} (${resource.type}): ${resource.description || resource.name}`
)
.join('\n');
const prompt = `${view.state.doc.toString()}\n\nResources:\n${formattedResources}`;
// ... submit prompt to AI server
// const response = await g