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Polymation MCP Server

by paradoxsyn Your server? Claim it
local only

Polymation runs on your own machine — the client starts it, so there is no endpoint to ping. 1 594 installs a week from npm. Last commit 6 Nov 2026.

Author Rive; convert Lottie, After Effects, Animate and Figma into it; animate AI and pixel art.

Installs per day peak 344 · avg 87 · +67% w/w
a month agotoday
1 594
Installs / week
npm · rivemcp
2
Stars
0 open issues
6 Nov 2026
Last commit
24 releases in 90 days
custom licence
License
Dockerfile

What the code does

We read the source, 1 d ago · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Runs a command on install [пакет] package.json:1
postinstall: node scripts/postinstall.mjs
File ships in the package but is absent from the source [пакет] bin/rivemcp.mjs:1
этот файл ставится пользователю, но в репозитории его нет
Runs an external command [пакет] bin/rivemcp.mjs:34
const child = spawn(binary, process.argv.slice(2), { stdio: "inherit", windowsHide: true, env });

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add rivemcp -- npx -y rivemcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "rivemcp": {
      "command": "npx",
      "args": [
        "-y",
        "rivemcp"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.rivemcp]
command = "npx"
args = ["-y", "rivemcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "rivemcp": {
      "command": "npx",
      "args": [
        "-y",
        "rivemcp"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "rivemcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "rivemcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: POLYMATION_LICENSE_KEY (Licence key from polymation.stunning.gg. Optional: without one, the trial allowance applies).

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Polymation — questions

Answers built from our own checks of this server.

Why is there no uptime for Polymation?
Polymation runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package rivemcp was installed 1 594 times last week.
How do I connect Polymation?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls rivemcp straight from npm; nothing to host, nothing to sign up for.
How many people use Polymation?
The npm package rivemcp was installed 1 594 times in the last week. Week over week that is +67%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Polymation open source?
No, and the distinction matters: it ships its own licence file rather than a standard open-source licence. That makes it source-available — you can read the code, but the terms are the author's own, not one of the recognised open-source licences. Read them before you build on it.