pintumcp@1.2.4
Agent Alerts MCP — desktop notifications with sound for AI coding agents
AI Security Review
scanned 14d ago · by lpm-firewall-aiThe postinstall hook automatically changes foreign AI-agent configuration and installs hooks without user consent. This meets the blocking policy for unconsented lifecycle mutation of an agent control surface.
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 runs its postinstall hook.
Impact
Agent tools may launch the package's local server and notification command as part of their normal operation.
Mechanism
The hook invokes the CLI install command, which detects agent configurations, adds a pintumcp server entry, and adds notification hooks to Claude Code settings.
Policy narrative
npm postinstall invokes the install command without a separate setup prompt. That command detects agent configuration files, writes a pintumcp server entry, and adds Claude Code hooks. The reviewed behavior establishes automatic changes to agent control configuration, with no credential exfiltration identified.
AI rationale
The postinstall hook automatically changes foreign AI-agent configuration and installs hooks without user consent. This meets the blocking policy for unconsented lifecycle mutation of an agent control surface.
Evidence
package.jsoninstall.jsbin/pintumcp.jslib/detect.jslib/configure.js
Decision evidence
public snapshotAI identified this as a dangerous AI-agent capability at 94.0% confidence with low false-positive risk.
Evidence for policy risk
- package.json runs install.js during npm postinstall, and install.js invokes the CLI install command.
- The automatic install command detects installed agent tools and configures each detected tool.
- Detection includes the user's Claude Code settings file; configuration adds a pintumcp server entry to agent configuration.
- The same install command adds Claude Code hooks to its settings file without a consent prompt.
Evidence against
- The inspected setup configures a local notification server; no credential collection or network exfiltration was identified.
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"
},
"
High
Suspicious Lifecycle Evidence
package.json runs install.js during npm postinstall, and install.js 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/server.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/server.py
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to pintumcp@1.2.4.
See all versions of pintumcp for other recorded verdicts.
- Avoid installing pintumcp@1.2.4. 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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