feat(third_party): add Excalidraw plugin

.cursor-plugin/marketplace.json

@@ -392,6 +392,11 @@
       "name": "daloopa",
       "source": "third_party/daloopa",
       "description": "Pull source-linked fundamentals, KPIs, filings, and prices."
+    },
+    {
+      "name": "excalidraw",
+      "source": "third_party/excalidraw",
+      "description": "Draw and export hand-drawn diagrams from chat."
     }
   ]
 }

README.md

@@ -79,6 +79,7 @@ Official Cursor plugins for popular developer tools, frameworks, and SaaS produc
 | `interactive-brokers` | [Interactive Brokers](third_party/interactive-brokers/) | Cursor | Integrations | Review positions, balances, P&L, and draft trade instructions. |
 | `meltwater` | [Meltwater](third_party/meltwater/) | Cursor | Integrations | Search media and social mentions and pull analytics. |
 | `daloopa` | [Daloopa](third_party/daloopa/) | Cursor | Integrations | Pull source-linked fundamentals, KPIs, filings, and prices. |
+| `excalidraw` | [Excalidraw](third_party/excalidraw/) | Cursor | Integrations | Draw and export hand-drawn diagrams from chat. |
 Author values match each plugin’s `plugin.json` `author.name` (Cursor lists `plugins@cursor.com` in the manifest).
 
 ## Repository structure

third_party/excalidraw/.cursor-plugin/plugin.json

@@ -0,0 +1,35 @@
+{
+  "name": "excalidraw",
+  "displayName": "Excalidraw",
+  "version": "1.0.0",
+  "minClientVersions": {
+    "cursor": "3.13.0"
+  },
+  "description": "Draw and export hand-drawn diagrams from chat.",
+  "author": {
+    "name": "Cursor",
+    "email": "plugins@cursor.com"
+  },
+  "homepage": "https://github.com/excalidraw/excalidraw-mcp",
+  "repository": "https://github.com/cursor/plugins",
+  "license": "MIT",
+  "logo": "assets/logo.png",
+  "keywords": [
+    "excalidraw",
+    "diagrams",
+    "whiteboard",
+    "sketch",
+    "flowchart",
+    "architecture",
+    "mcp apps",
+    "mcp"
+  ],
+  "category": "integrations",
+  "tags": [
+    "excalidraw",
+    "diagrams",
+    "productivity",
+    "mcp"
+  ],
+  "mcpServers": "./mcp.json"
+}

third_party/excalidraw/CHANGELOG.md

@@ -0,0 +1,9 @@
+# Changelog
+
+All notable changes to this plugin will be documented here.
+
+## 1.0.0 — initial release
+
+- Added the `excalidraw` MCP server pointing at Excalidraw's hosted Streamable HTTP endpoint (`https://mcp.excalidraw.com/mcp`).
+- No auth — the public server needs no credentials.
+- Logo: Excalidraw's official mark, from the `excalidraw` GitHub organization.

third_party/excalidraw/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Cursor
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

third_party/excalidraw/README.md

@@ -0,0 +1,58 @@
+# Excalidraw
+
+Cursor plugin that connects agents to [Excalidraw](https://github.com/excalidraw/excalidraw-mcp) through Excalidraw's official remote [Model Context Protocol](https://modelcontextprotocol.io/) server.
+
+Draw and export hand-drawn diagrams from chat.
+
+## Install
+
+1. Open **Cursor Settings → Plugins**.
+2. Search for **Excalidraw**.
+3. Click **Install**.
+
+Or run `/add-plugin excalidraw` in chat.
+
+## MCP
+
+```json
+{
+  "mcpServers": {
+    "excalidraw": {
+      "type": "http",
+      "url": "https://mcp.excalidraw.com/mcp"
+    }
+  }
+}
+```
+
+No authentication is required; the server covers public repositories only.
+
+## Before you connect
+
+No account is needed. The hosted server renders diagrams as interactive MCP App views in clients that support them, and can export `.excalidraw` files anywhere.
+
+## What agents can do
+
+| Category | Capabilities |
+| --- | --- |
+| Draw | Create a diagram view from elements the agent describes |
+| Export | Export the current drawing to an `.excalidraw` file |
+| Checkpoints | Save and restore drawing checkpoints within a session |
+
+The hosted runtime is the source of truth for tool names and schemas.
+
+## Notes
+
+- This is the open-source Excalidraw MCP server. Excalidraw+ workspaces use a separate authenticated endpoint (`https://api.excalidraw.com/api/v1/mcp`) that this plugin does not configure.
+- The bare origin `https://mcp.excalidraw.com` redirects to `/mcp`; the plugin uses the final URL.
+
+## Docs
+
+- excalidraw-mcp on GitHub: https://github.com/excalidraw/excalidraw-mcp
+- Server URL: https://mcp.excalidraw.com/mcp
+
+Logo is Excalidraw's official mark, from the `excalidraw` GitHub organization.
+
+## License
+
+MIT

third_party/excalidraw/mcp.json

@@ -0,0 +1,8 @@
+{
+  "mcpServers": {
+    "excalidraw": {
+      "type": "http",
+      "url": "https://mcp.excalidraw.com/mcp"
+    }
+  }
+}