AI-powered assistant inside Unreal Editor. Chat with Claude Code to build, debug, and automate anything, Blueprints, C++, materials, assets, levels, via 800+ engine MCP tools.

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Features:

• Claude Code chat in-editor — dockable tab, not a sidecar app

• Multi-provider switching — 12 presets (Claude, DeepSeek, GLM, Kimi, Gemini, Ollama, etc.)

• Multi-agent orchestration — tasks fan out to sub-agents automatically

• Semantic search — find assets and tools by meaning via local embedding index

• In-process — MCP server, tool registry, WebUI all run inside the editor

• Terminal panel — direct Claude Code stdio passthrough

Required Plugins

• ModelContextProtocol (required) — exposes 800+ engine tools via MCP; Otter registers its own bridge tools here

• ToolsetRegistry (required) — the async tool execution backend Otter calls via otter_call

• AllToolsets (required) — aggregates all toolset definitions into the engine tool index

• MCPClientToolset (required) — routes MCP client calls into the toolset execution pipeline

• Terminal (required) — hosts the live Claude Code stdio panel inside the editor