registry / AI-agent control-surface risk / @keemgunn/lanesmith
@keemgunn/lanesmith
A personal Git workflow CLI for repo onboarding, branching, Release Lane Models, and release workflows.
This report shows the evidence for @keemgunn/lanesmith@1.4.0. 1 of 3 known versions is blocked or flagged. See all versions.
AI Security Review
scanned 2mo ago · by lpm-firewall-aiThe package has a concrete, automatic postinstall path that mutates third-party AI-agent control surfaces in the user's home directory. Although no credential theft or network exfiltration was found, this unconsented lifecycle behavior meets the install-control-surface blocking policy.
Static reason
One or more suspicious static signals were detected.
Trigger
npm installation, through the postinstall lifecycle hook.
Impact
The package can add or replace prompts that influence installed AI-agent tools and modifies global Lanesmith configuration.
Mechanism
Automatic replacement and copying of packaged agent skills into shared home-directory agent control surfaces.
Policy narrative
On npm installation, postinstall launches a bootstrapper that uses the user's home directory. It removes Lanesmith-named directories and writes packaged skills into both ~/.agents/skills and ~/.claude/skills, shared control surfaces for AI agents. It also refreshes global Lanesmith settings. These mutations happen automatically, before the user invokes the CLI, so the package can alter agent behavior without consent.
AI rationale
The package has a concrete, automatic postinstall path that mutates third-party AI-agent control surfaces in the user's home directory. Although no credential theft or network exfiltration was found, this unconsented lifecycle behavior meets the install-control-surface blocking policy.
Evidence
scripts/postinstall.mjsdist/cli/bootstrap-harness.jsdist/domain/agent-harness-locations.jsdist/infra/agent-harness/install.jsdist/infra/paths/settings-paths.js~/.agents/skills/lanesmith*~/.claude/skills/lanesmith*~/.lanesmith/settings.toml~/.lanesmith/.default-settings
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
- The npm postinstall hook automatically runs both settings and agent-harness bootstrappers.
- The harness installer uses the current user's home directory without a user command or confirmation.
- It targets shared agent skill directories for both generic agents and Claude.
- Installation deletes existing Lanesmith-named skill directories, then copies package-provided skills into those agent control surfaces.
- The postinstall also refreshes global Lanesmith settings under the user's home directory.
Evidence against
- No source evidence of credential harvesting, arbitrary code evaluation, or direct network requests during installation.
- The harness cleanup is restricted to Lanesmith-named files and directories rather than unrelated agent content.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemShell
HighEntropyStringsUrlStrings
Source & flagged code
5 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node ./scripts/postinstall.mjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node ./scripts/postinstall.mjs
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgshare/settings/templates/github-actions/direct/release-direct.shView file
•path = share/settings/templates/github-actions/direct/release-direct.sh
kind = build_helper
sizeBytes = 966
magicHex = [redacted]
Medium
Ships Build Helper
Package ships non-JavaScript build or shell helper files.
share/settings/templates/github-actions/direct/release-direct.shFindings
3 High4 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighSemantic Analysis Limiteddist/infra/devlog/store.js#virtual:normalized:round1
HighSuspicious Lifecycle Evidencescripts/postinstall.mjs
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumEnvironment Vars
MediumShips Build Helpershare/settings/templates/github-actions/direct/release-direct.sh
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowNo License
Affected versions and remediation
This report applies to @keemgunn/lanesmith@1.4.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing @keemgunn/lanesmith@1.4.0. 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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