rivemcp@1.13.5
Polymation — the multi-format AI animation MCP. Author Rive (.riv/.rev) and Spline (.splinecode/.spline) scenes from scratch and convert Rive↔Spline, validated on the real runtime. The most complete Rive MCP, now multi-format.
AI Security Review
scanned 26d ago · by lpm-firewall-aiThe lifecycle hook installs an executable whose behavior is not visible in the inspected source, creating an unresolved staged-payload risk. The version-specific GitHub download and absence of concrete attack behavior support a warning rather than a block.
Decision evidence
public snapshot- The package runs scripts/postinstall.mjs automatically after installation.
- The postinstall script downloads a platform-specific executable from a GitHub release and writes it into the package's bin directory.
- The command shim later executes that downloaded binary.
- The executable's behavior is opaque in the inspected JavaScript source.
- The download URL is tied to the package version and a platform-specific asset name.
- The inspected source shows no credential collection, unrelated file writes, or other concrete attack behavior.
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 package runs scripts/postinstall.mjs automatically after installation.
package.jsonView on unpkg · L53Findings
Affected versions and remediation
This report applies to rivemcp@1.13.5.
See all versions of rivemcp for other recorded verdicts.
- Review the evidence and your use of rivemcp@1.13.5 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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