rivemcp@1.21.1
Polymation — the AI animation MCP. Author Rive (.riv/.rev) and Spline; convert Lottie, After Effects, Adobe Animate, Figma and glTF into Rive and back; turn AI art into rigged characters, pixel-art puppets, sprite sheets and flipbooks. Offline, checked in
AI Security Review
scanned 5d ago · by lpm-firewall-aiThe install-time binary download is documented and comes from the project's own release host, but the package explicitly ships no readable executable source and the launcher runs that opaque binary. The available evidence does not establish harmful behavior, so this warrants a warning rather than a malicious verdict.
Decision evidence
public snapshot- The manifest runs scripts/postinstall.mjs automatically during installation.
- The postinstall script says the package ships no readable source and downloads an obfuscated executable.
- The installer fetches a versioned binary from the project's GitHub releases and writes it into bin/.
- The launcher starts that binary when the rivemcp command is run; its behavior cannot be verified from the available source.
- The README describes the package as an animation MCP and documents the platform binary download.
- The installer uses the project's own GitHub releases host, and the launcher passes through command arguments and stdio.
Source & flagged code
6 flaggedPackage defines install-time lifecycle scripts.
package.jsonView on unpkgInstall-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgThe manifest runs scripts/postinstall.mjs automatically during installation.
package.jsonView on unpkg · L75Findings
Affected versions and remediation
This report applies to rivemcp@1.21.1.
See all versions of rivemcp for other recorded verdicts.
- Review the evidence and your use of rivemcp@1.21.1 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
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