Event Horizon is a VS Code extension that visualizes AI coding agents as a living cosmic system. Instead of viewing logs, terminals, or raw agent output, developers observe agent behavior in real time through an interactive universe.

Event Horizon

The multi-agent orchestration framework for AI coding. Tell one agent to build a feature. It creates the plan, spawns the team, assigns roles, tracks budget, and manages the entire project. Works with Claude Code, OpenCode, Cursor, and Cursor.

The Problem

You open three terminals. Claude Code is building the API. OpenCode is writing tests. Cursor is updating the docs. They're all editing the same project.

Then Cursor overwrites OpenCode's changes to server.ts. OpenCode doesn't know. The build breaks. You spend 20 minutes untangling the mess.

Event Horizon prevents this entirely.

How It Works

1. Create a plan

/eh:create-plan Build a REST API with auth, database layer, and tests

Event Horizon generates a plan with parallel tracks, dependency annotations, and verify steps. The agent that creates the plan automatically becomes the orchestrator.

2. The orchestrator spawns the team

The orchestrator spawns workers in visible VS Code terminals. Each worker gets a role, a task assignment, and access to the shared knowledge base.

Orchestrator → spawns Claude Code (implementer) → claims database tasks
Orchestrator → spawns OpenCode (tester)