codemirror-mcp
A CodeMirror extension that implements the Model Context Protocol (MCP) for resource mentions and prompt commands.
Features
- Resource Completion: Autocomplete for
@resourcementions - Resource Decorations: Visual styling for
@resourcementions with click handling - Prompt Completion: Autocomplete for
/promptcommands - Theme Support: Customizable styling
Installation
npm install @marimo-team/codemirror-mcp @modelcontextprotocol/sdk
# or
pnpm add @marimo-team/codemirror-mcp @modelcontextprotocol/sdkPeer 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 generateText(prompt);
},
},
]),
],
parent: document.querySelector('#editor'),
});
