box by Simular: plugins

box gives your AI agent a computer of its own: a cloud Linux desktop with Chrome and a shell that it drives over MCP, while your own computer stays free. You can watch it live and take over at https://box.simular.ai/box.

Most agents need no plugin: add the MCP server https://relay.simular.cloud/mcp and sign in once (see https://box.simular.ai/install). This repository holds a package for each agent that installs box its own way. Each folder stands alone and is released through that agent's channel.

Agent	Folder	Sign-in	Install
Claude Code and Cowork	claude/	OAuth, once in the browser	/plugin marketplace add simular-ai/box-plugin, then /plugin install box@simular-box
DeepSeek Harness (dsh)	dsh/	Personal key (cb_...)	dsh/README.md

Adding an agent

Add a folder named after the agent with its own manifest, MCP config and, where the agent supports skills, a copy of claude/skills/box/SKILL.md. Point it at https://relay.simular.cloud/mcp. Use OAuth sign-in where the agent supports it; otherwise read a personal key from an environment variable, never from a file in the package. Add a row above.

Releasing

• claude/: bump version in claude/.claude-plugin/plugin.json; Claude Code picks it up from the marketplace.
• dsh/: bump version in dsh/package.json, then push a tag dsh-vX.Y.Z. The release workflow attaches dsh-box.tgz.