@sentropic/h2a-runtime@0.95.0
h2a heavy runtime (sessions / k8s / tunnel, node-pty + aws-sdk). Lazily imported by @sentropic/h2a; installed separately.
AI Security Review
scanned 26d ago · by lpm-firewall-aiSource inspection found explicit commands that install plugins and update agent configuration, but no npm lifecycle hook that performs these actions automatically. This is a warning-level agent capability, not evidence of malicious behavior.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
A user invokes the plugin command or explicitly requests Claude hook installation.
Impact
These actions can change agent behavior and add plugin capabilities, with effects limited to the user-requested setup.
Mechanism
The plugin command installs the selected package globally and registers its MCP configuration in agent settings; the hook option merges hooks into Claude settings.
AI rationale
Source inspection found explicit commands that install plugins and update agent configuration, but no npm lifecycle hook that performs these actions automatically. This is a warning-level agent capability, not evidence of malicious behavior.
Evidence
dist/plugin.jsdist/index.js
Decision evidence
public snapshotAI called this Suspicious at 88.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The package manifest exposes the runtime entrypoint and declares no lifecycle script.
- Plugin installation is initiated through the explicit plugin CLI command and installs the selected package globally.
- The plugin command registers MCP configuration in agent configuration files, including Codex configuration.
- Hook installation is an explicit option that merges hooks into Claude settings.
- The reviewed auth helper collects selected local tool authentication files for remote sessions; this is deployment functionality, not evidence of theft.
- No concrete malicious behavior was identified; the configuration and plugin changes are user-invoked capabilities.
Evidence against
- The plugin command can install a package globally and write behavior-bearing agent configuration, so this is a concrete capability requiring user invocation.
- The manifest has no npm install lifecycle hook that would trigger the observed setup automatically.
Behavioral surface
ChildProcessCryptoEnvironmentVars
Source & flagged code
6 flaggeddist/pty.jsView file
76package = @sentropic/h2a-runtime; repositoryIdentity = h2a; dependency = node-pty
L76: try {
L77: require("node-pty");
L78: }
High
Copied Package Dependency Bridge
Package metadata claims a different repository identity while copied source loads a runtime dependency bridge.
dist/pty.jsView on unpkg · L76dist/plugin.jsView file
•Runtime or CLI code links a write operation to an explicit external AI-agent control path:
nd, args: [...args] };
root.mcpservers = servers;
return json.stringify(root, null, 2) + "\n";
}
export function mergeclaudemcpservers(json, name, command, args) {
return mergemcpserversjson(json, name, command, args, "claude.json");
}
export function mergeagymcpservers(json, name, command, args) {
return mergemcpserversjson(json, name, command, args, "mcp_config.json");
}
High
External Ai Agent Control Surface Mutation
Runtime or CLI source writes behavior-bearing configuration into a user or project AI-agent control surface.
Findings
4 High5 Medium3 Low
HighCopied Package Dependency Bridgedist/pty.js
HighExternal Ai Agent Control Surface Mutationdist/plugin.js
HighSemantic Analysis Limiteddist/auth-tools.js#virtual:normalized:round1
HighPrevious Version Dangerous Deltadist/index.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
MediumSuspicious Lifecycle Evidencepackage.json
MediumAi Review Evidencedist/config.js
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @sentropic/h2a-runtime@0.95.0.
See all versions of @sentropic/h2a-runtime for other recorded verdicts.
- Review the evidence and your use of @sentropic/h2a-runtime@0.95.0 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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