pintumcp@1.2.9
Agent Alerts MCP — desktop notifications with sound for AI coding agents
AI Security Review
scanned 14d ago · by lpm-firewall-aiThe postinstall chain performs unconsented configuration of AI agent control surfaces and installs hooks that execute package code on agent events. This is a concrete install-time control-surface mutation, so the package should be blocked.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review; previous stored version diff introduced dangerous source
Trigger
Installing the package through npm, which runs its postinstall hook.
Impact
Installation changes agent configuration and enables package code to run in agent event handling and at user login without a separate setup command.
Mechanism
The hook invokes the CLI install command. That command detects tools, writes MCP configuration, copies an OpenCode plugin, adds Claude Code hooks, and configures tray startup.
Policy narrative
The package’s npm postinstall immediately invokes its install command. That command makes persistent changes to detected AI tools, including MCP configuration, an OpenCode plugin, and Claude Code event hooks, and configures tray startup at login. These changes affect foreign agent control surfaces without a separate user command.
AI rationale
The postinstall chain performs unconsented configuration of AI agent control surfaces and installs hooks that execute package code on agent events. This is a concrete install-time control-surface mutation, so the package should be blocked.
Evidence
package.jsoninstall.jsbin/pintumcp.jslib/configure.jslib/hooks.js
Decision evidence
public snapshotAI identified this as a dangerous AI-agent capability at 99.0% confidence with low false-positive risk.
Evidence for policy risk
- package.json runs install.js during npm postinstall, which immediately invokes the CLI install command.
- The automatic install detects AI coding tools and adds this package to their MCP configurations, copies an OpenCode plugin, and adds Claude Code hooks without a consent gate.
- The Claude Code hook entries run the package’s Python hook on several agent events, changing agent behavior after installation.
- The install command also creates platform startup entries that launch the tray at login.
- The Codex config writer appends an MCP server entry using the supplied Python and server paths.
Evidence against
Behavioral surface
ChildProcessEnvironmentVarsFilesystemShell
HighEntropyStrings
Source & flagged code
7 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node install.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg9"scripts": {
"postinstall": "node install.js"
},
"keywords": [
"mcp",
"notifications",
"
High
Suspicious Lifecycle Evidence
package.json runs install.js during npm postinstall, which immediately invokes the CLI install command.
package.jsonView on unpkg · L9•scripts.postinstall = node install.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgpython/tray_cross.pyView file
Findings
5 High4 Medium3 Low
HighInstall Time Lifecycle Scriptspackage.json
HighKnown Malware Source Similaritybin/pintumcp.js
HighKnown Malware Source Fingerprint Signaturebin/pintumcp.js
HighPrevious Version Dangerous Deltabin/pintumcp.js
HighSuspicious Lifecycle Evidencepackage.json
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumEnvironment Vars
MediumShips Build Helperpython/tray_cross.py
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to pintumcp@1.2.9.
See all versions of pintumcp for other recorded verdicts.
- Avoid installing pintumcp@1.2.9. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
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