penpot/mcp/packages/server/src/PenpotConnection.ts
Dr. Dominik Jain 8efbd9b5d3
🎉 Allow MCP to work with multiple files in parallel (#11927)
* 🎉 Add multi-file session routing to the MCP server

Session routing:
- Track each user's Penpot connections by session ID.
- Dispatch explicit sessions directly; otherwise discover the sole session.
- Return a retryable error when discovery fails or is incomplete.

Plugin and tools:
- Initialize connections with a fresh session ID and file metadata.
- Share the optional sessionId schema and place it last in tool inputs.

Validation:
- 84 tests, server type checking, and MCP formatting checks pass.
- Disable test logging to avoid the logging worker shutdown hang.

AI-assisted-by: gpt-6

* 🎉 Support independent MCP connections

- Require explicit connection intent for each integrated workspace.
- Derive short session IDs from the Penpot app instance and file.
- Show and copy session IDs in the MCP menu and standalone plugin UI.
- Stop stale callbacks and reconnect attempts after disconnect.

Validate with frontend and plugin tests, type checking, live multi-tab
checks, and standalone UI checks with a simulated connection. Server
tests pass with --test-force-exit; the normal runner can hang on shutdown.

AI-assisted-by: gpt-6

* 📚 Document multi-file MCP sessions

- Explain independent connections, session selection, and copying IDs.
- Describe session ID lifetimes for integrated and standalone plugins.
- Correct browser focus, connection, and recovery guidance.

Validate with the documentation site build and diff checks.

AI-assisted-by: gpt-6

* ✨ Change behavior on session ID duplication

* ✨ Open MCP toolbar menu on hover and match menu style

---------

Co-authored-by: alonso.torres <alonso.torres@kaleidos.net>
Co-authored-by: elhombretecla <delacruzgarciajuan@gmail.com>
2026-10-02 14:22:52 +02:00

23 lines
756 B
TypeScript

import type { WebSocket } from "ws";
import type { PenpotSession } from "@penpot/mcp-common";
/**
* Observable liveness state of a plugin connection.
*/
export interface PluginLivenessState {
/** timestamp of the last plugin message, in ms since epoch. */
lastHeartbeat: number;
/** whether the plugin reported a browser freeze. */
frozen: boolean;
}
/** One local Penpot WebSocket connection and its session metadata. */
export interface PenpotConnection extends PluginLivenessState {
readonly socket: WebSocket;
readonly userToken: string | null;
readonly session: PenpotSession;
readonly pingInterval: NodeJS.Timeout;
/** whether initialization and dispatch subscriptions have completed. */
ready: boolean;
}