agent-nervous-system-mcp@1.5.0
Shared context MCP for AI agents - append-only, zero config, auto-detect
AI Security Review
scanned 3h ago · by lpm-firewall-aiThe manifest activates the hook during installation, and its noninteractive path modifies detected agents' configuration without affirmative selection. This is unconsented installation-time mutation of a broad AI-agent control surface.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
The package's postinstall hook runs during installation.
Impact
The package is added to detected agents' configurations and can run when those agents start.
Mechanism
The hook detects agent configuration files or commands, selects all detected agents when no terminal is available, and writes configurations that register this package.
Policy narrative
During installation, the postinstall hook can modify user-level AI-agent settings. In noninteractive environments it skips the selection prompt, chooses every detected agent, and writes configurations that register this package as an MCP server.
AI rationale
The manifest activates the hook during installation, and its noninteractive path modifies detected agents' configuration without affirmative selection. This is unconsented installation-time mutation of a broad AI-agent control surface.
Evidence
package.jsonscripts/postinstall.js~/.claude.json
Decision evidence
public snapshotAI identified this as a dangerous AI-agent capability at 97.0% confidence with low false-positive risk.
Evidence for policy risk
- package.json runs scripts/postinstall.js during installation.
- The hook targets user-level configuration for multiple AI agents.
- Without an interactive terminal, it selects every detected agent without asking.
- It writes each selected agent's configuration and registers this package as an MCP server.
- The registration runs the agent-nervous-system-mcp command.
Evidence against
Behavioral surface
ChildProcessFilesystemShell
HighEntropyStrings
Source & flagged code
7 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node scripts/postinstall.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg14"postinstall": "node scripts/postinstall.js"
},
"keywords": ["mcp", "shared-context", "agent-memory", "ai", "common-context"],
"author": "",
"license":
High
Suspicious Lifecycle Evidence
package.json runs scripts/postinstall.js during installation.
package.jsonView on unpkg · L14•scripts.postinstall = node scripts/postinstall.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgscripts/postinstall.jsView file
Findings
1 Critical5 High2 Medium4 Low
CriticalAi Agent Control Hijackscripts/postinstall.js
HighInstall Time Lifecycle Scriptspackage.json
HighPrevious Version Dangerous Deltascripts/postinstall.js
HighSuspicious Lifecycle Evidencepackage.json
HighAi Review Evidencescripts/postinstall.js
HighAi Review Evidencescripts/postinstall.js
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to agent-nervous-system-mcp@1.5.0.
See all versions of agent-nervous-system-mcp for other recorded verdicts.
- Avoid installing agent-nervous-system-mcp@1.5.0. 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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