# ShareCube plugin **Publish, edit, and comment on shareable HTML and Markdown artifacts from your coding agent.** [![Validate](https://github.com/infragate/sharecube-plugin/actions/workflows/validate.yml/badge.svg)](https://github.com/infragate/sharecube-plugin/actions/workflows/validate.yml) [![Agent Plugins 1.0.0](https://img.shields.io/badge/Agent%20Plugins-1.0.0-6249b5)](https://agent-plugins.org) [![MCP](https://img.shields.io/badge/MCP-Streamable%20HTTP-6249b5)](https://docs.infragate.ai/sharecube/mcp/)
[![Claude Code](https://img.shields.io/badge/Claude%20Code-plugin-a99ad9)](#claude-code) [![Cursor](https://img.shields.io/badge/Cursor-plugin-a99ad9)](#cursor) [![Codex](https://img.shields.io/badge/Codex-plugin-a99ad9)](#codex) [![License: MIT](https://img.shields.io/badge/License-MIT-a99ad9)](LICENSE) [Website](https://sharecube.io) · [Docs](https://docs.infragate.ai/sharecube/) · [MCP setup](https://docs.infragate.ai/sharecube/mcp/)

--- ## What it does Your agent writes a report, a plan, or a page. ShareCube turns it into a link your team can open, comment on, and edit. The plugin gives the agent: - **The ShareCube MCP server** at `https://app.sharecube.io/mcp`, for creating, finding, editing, and commenting on artifacts. Sign-in is OAuth, so there are no keys to configure. - **A `sharecube` skill** that tells the agent when to reach for ShareCube and how to use it safely: targeted edits that never overwrite changes people made in the web app, HTML that works in ShareCube's sandboxed viewer, anchored and resolved comments, and confirming before a permanent delete. ## Install ### Claude Code ``` /plugin marketplace add infragate/sharecube-plugin /plugin install sharecube@sharecube ``` The first ShareCube tool call opens a browser window to sign in. ### Cursor 1. Open **Cursor Settings → Plugins**. 2. Search for **ShareCube**. 3. Click **Install**, then sign in to ShareCube when Cursor prompts you. Or run `/add-plugin sharecube` in chat. To run it from source instead, clone it into Cursor's local plugins folder and restart Cursor: ``` git clone https://github.com/infragate/sharecube-plugin ~/.cursor/plugins/local/sharecube ``` ### Codex ``` codex plugin marketplace add infragate/sharecube-plugin codex plugin add sharecube@sharecube ``` In the ChatGPT desktop app, add `infragate/sharecube-plugin` as a marketplace and install **ShareCube** from it. ### Hosts One tree serves every host. Each reads its own manifest and shares the same skill and MCP server. | Host | Manifest | MCP config | | --- | --- | --- | | [Agent Plugins](https://agent-plugins.org) clients | `plugin.json` | `mcp.json` | | Claude Code | `.claude-plugin/plugin.json` | `.mcp.json` | | Cursor | `.cursor-plugin/plugin.json` | inline in its `plugin.json` | | Codex | `plugin.json`, with its display name and logo under `extensions["com.openai"]` | `mcp.json` | All three describe the same server. They are separate because each host spells the transport differently: `streamable-http` for Agent Plugins and Codex, `http` for Claude Code, and no type at all for Cursor, which infers it from the URL. Keep `plugin.json` and `mcp.json` on Agent Plugins **1.0.0**. Codex rejects any other version and the plugin fails to load. Codex lists the plugin from `.agents/plugins/marketplace.json`, and older Codex builds read `.codex-plugin/plugin.json`. ## Development Try your working copy in Claude Code: ``` claude --plugin-dir . ``` Check the manifests before you push: ``` node scripts/check-manifests.mjs ``` It fails if the manifests disagree on name, version, or license, reference a file that does not exist, or describe different MCP servers. CI runs it on every push and pull request, along with the Agent Plugins 1.0.0 schemas, a real install with the Codex CLI, Cursor's validator from [cursor/plugin-template](https://github.com/cursor/plugin-template), and `claude plugin validate`. To release, bump `version` in all four manifests together and add an entry to [CHANGELOG.md](CHANGELOG.md). ## License [MIT](LICENSE)