About PlayCanvas
PlayCanvas is an MCP server published by playcanvas in the Developer Tools category: mCP Server for AI automation of the PlayCanvas Editor.
The repository has 144 stars and 31 forks, with the last commit yesterday. Recent commit activity is the strongest signal that reported issues will get attention.
Install
git clone https://github.com/playcanvas/editor-mcp-serverThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Ask AI
Ask AI about PlayCanvas
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Security checks
Static checks derived from the repository 8 hours ago. Heuristics on the source, not an audit.
- ✓README presentThe repository ships documentation.
- ✓License declaredUsable under a stated license.
- ✓Tests presentA test suite exists in the repository.
- ✓Dependencies pinnedA lockfile pins dependency versions.
- !No dynamic code executionSource scan found eval or shell execution. Review how tool inputs reach it before granting credentials.
- !Scoped permissionsDoesn't declare a permission scope. Assume it can do anything its process can.
Releases
README
PlayCanvas Editor MCP Server
| npm | Developer Site | Editor Manual | API Reference | Blog | Forum |
An MCP server that lets AI agents automate the PlayCanvas Editor and check that scenes actually run. The MCP client is built into the Editor, so no browser extension is needed.
Install
Add the server to your MCP client. For Claude Code:
claude mcp add playcanvas -- npx -y @playcanvas/editor-mcp-server
Requires Node.js 22.18+. Add the server once per agent: two servers take turns owning the Editor port.
{
"mcpServers": {
"playcanvas": {
"command": "npx",
"args": ["-y", "@playcanvas/editor-mcp-server"]
}
}
}
Add this to claude_desktop_config.json (Settings > Developer > Edit Config), to Cursor's
global MCP servers (Cursor Settings > MCP), or to a .mcp.json committed to the project root
for Claude Code. On Windows, use "command": "cmd" with "args": ["/c", "npx", "-y", "@playcanvas/editor-mcp-server"].
codex mcp add playcanvas -- npx -y @playcanvas/editor-mcp-server
On Windows, insert cmd /c before npx. If the first run times out while npx downloads, raise
startup_timeout_sec under [mcp_servers.playcanvas] in ~/.codex/config.toml.
Then open your project in the Editor, click the MCP button below Publish, and click CONNECT. To
start with no project open, use the MCP button next to NEW PROJECT on playcanvas.com/editor. Allow
Chrome's Apps on device permission when prompted; if the Editor stays on Connecting, it is
blocked. The default port is 52000; to change it, pass --port <number> to the server and set the
same port in the Editor.
Usage
Ask your agent for the outcome you want in the open project. For example:
Add a spinning cube with a rotate script to the current scene, launch it, and capture a screenshot
of the running app to confirm it turns.
Tools
| Category | Coverage |
|---|---|
| Projects | Listing, exact reads, creation, name, description and visibility edits, and opening a project in the connected Editor |
| Entity | Exact reads, filtered lists, resolution, search, script lookup, creation, schema-safe batch edits, duplication, hierarchy changes, deletion and component lifecycle |
| Scripts | Asset text reads and writes, parsing, attachment, attributes, ordering and removal |
| Assets | Exact reads, reference graphs, native creation, streamed upload and atomic download up to 512 MiB, schema-safe edits, moves, duplication, source replacement, reimport, deletion and materials |
| Templates | Instantiation and instance override inspection, application, reversion and unlinking |
| Animation | Animation state graph reads and edits, mapping-safe state renames and animation events |
| Processing | Lightmaps, model unwrap and cancellation, texture conversion, atlases, cubemaps, fonts, metadata, compressed variants, prefiltering, sprites and bundles |
| Scene | Exact reads, listing, loading, creation, duplication, rename, deletion and scene settings |
| Settings | Scoped project, private, user, session and scene settings reads and edits |
| Viewport | Camera and viewport state, visibility, capture and focus |
| Editor | Selection, edit-time logs, transform gizmo state, undo and redo |
| Builds | Listing, exact reads, creation options, streamed downloads, primary build selection and deletion |
| Store | PlayCanvas Store search and import, licenses, Sketchfab search and import, and My Assets search and import |
| Runtime | Launch lifecycle and options, engine version discovery, screenshots, logs, live state inspection and keyboard, mouse and touch input |
| VCS | Branches, checkpoints, restore and hard reset, merges, conflict resolution and checkpoint diffs |
Tools act on the project open in the connected Editor, one Editor at a time. Project tools also
work from the project manager at playcanvas.com/editor with no project open; opening a project
reloads the tab into it and reconnects automatically. Projects can't be deleted. Runtime tools open
a Launch window, so allow pop-ups for the Editor.
Context cost
The 130 tool definitions total about 43,000 tokens (4 characters per token). Claude Code's MCP tool search is on by default and loads only tool names at start, about 1,000 tokens.
Data and network use
The server has no telemetry. It listens on 127.0.0.1:52000 for playcanvas.com and localhost
pages, stops any other process holding that port, touches local files only for upload and download
tools, and makes one outbound request: download_build fetches the archive URL the Editor reports.
Contributing
git clone https://github.com/playcanvas/editor-mcp-server.git
cd editor-mcp-server
npm install
npm run watch
Point your MCP client at src/server.ts with "command": "node". npm run debug opens the MCP
Inspector and npm run build produces the published bundle. Report bugs in
GitHub Issues.
License
The PlayCanvas Editor MCP Server is released under the MIT License.
README fetched from the repository 8 hours ago. The original is authoritative.