Install Polymation

One command. No account required to get started.

3 free exports included. Try it out before subscribing — no license key needed, though each trial export needs an internet connection.

Claude Desktop (easiest — one click)

No Node.js, JSON editing or terminal to get started.

  1. Download rivemcp.mcpb (17 MB)
  2. Open Claude Desktop → File → Settings → Extensions
  3. Click Advanced settings → Install extension
  4. Select the .mcpb file you just downloaded

Works on Windows, macOS, and Linux. Tools become available in your next chat.

Animating from images or video clips? The extension can't include the image library that cutting sprite sheets, removing backgrounds, aligning frames, cutting a character into parts, reading PSDs and video clips, animated stills, auto-meshing and image-to-3D use. For those, use the npm setup below. In Claude Desktop, that's the Claude Desktop (manual) tab. Assembling a flipbook or a rig from PNGs you already have works in the extension.

Previews and GIFs draw in Google Chrome or Microsoft Edge, so with either installed (Edge comes with Windows) there is nothing to set up. With neither, install a headless Chromium once with npx [email protected] install chromium (this needs Node.js). Use that exact version: it is the one the extension carries, and a different one fetches a browser the extension won't find.

Other MCP Clients (npm)

npm install -g rivemcp

Automatically downloads the correct binary for your platform. Requires Node.js 18+.

Previews, GIFs, video clips and conversion checks draw in Google Chrome or Microsoft Edge (Edge comes with Windows), or in Playwright's Chromium if you have installed it. With none of them, run npx [email protected] install chromium once.

Configure Your AI Client

Run in your terminal:

claude mcp add rivemcp -- npx -y rivemcp

On Windows, wrap with cmd: claude mcp add rivemcp -- cmd /c npx -y rivemcp. Add --scope user to enable it in every project.

Cursor doesn't support one-click .mcpb install yet. Three manual steps:

  1. Install the server: npm install -g rivemcp (or grab the binary from the Manual Install section below)
  2. Add this to ~/.cursor/mcp.json (or workspace .cursor/mcp.json):
    { "mcpServers": { "rivemcp": { "command": "npx", "args": ["-y", "rivemcp"] } } }
  3. Restart Cursor — the tools appear in the next chat

If you prefer JSON config over the one-click .mcpb install above, add to claude_desktop_config.json:

{ "mcpServers": { "rivemcp": { "command": "npx", "args": ["-y", "rivemcp"] } } }
Manual Install (alternative)

Download the standalone binary if you prefer not to use npm:

Then point your MCP client's "command" at the binary path directly. A binary on its own has no image library or headless browser beside it, so the image, video-clip and preview tools need the npm install.

Windows: SmartScreen may warn — click "More info" then "Run anyway".
macOS: run xattr -d com.apple.quarantine rivemcp-*