registry  /  @gbrandtio/rw-git-mcp  /  3.1.0

@gbrandtio/rw-git-mcp@3.1.0

Model Context Protocol (MCP) server for rw-git

AI Security Review

scanned 8d ago · by lpm-firewall-ai

No confirmed malicious attack surface was established. The package uses an install-time downloader for a package-aligned native MCP binary and a runtime CLI proxy, with optional documented skill copying.

Static reason
One or more suspicious static signals were detected.
Trigger
npm install runs postinstall; rw-git-mcp runtime invokes the downloaded binary; install-skills explicitly copies skills
Impact
Installs/runs a documented rw-git MCP server; no source evidence of credential theft, exfiltration, persistence, or destructive behavior
Mechanism
GitHub release binary downloader and CLI proxy
Rationale
Static inspection found a package-aligned postinstall binary download and documented agent-skill installation, but no concrete malicious behavior such as credential collection, exfiltration, persistence, or unconsented agent config mutation. The scanner signals are explained by the MCP package design and lifecycle downloader rather than an attack payload.
Evidence
package.jsoninstall.jsbin/cli.jsREADME.mdskills/rw-git-mcp-installation/SKILL.mdbin/rw-git-mcp-binbin/rw-git-mcp-bin.exe.agents/skills/rw-git-mcp
Network endpoints2
github.com/gbrandtio/rw-git/releases/download/v${version}/${artifactName}git+https://github.com/gbrandtio/rw-git.git

Decision evidence

public snapshot
AI called this Clean at 86.0% confidence as Benign with medium false-positive risk.
Evidence for block
  • package.json defines postinstall: node install.js
  • install.js downloads a platform binary from GitHub Releases without checksum verification
  • bin/cli.js can copy bundled skills into .agents/skills/rw-git-mcp on explicit install-skills
Evidence against
  • install.js URL is package-aligned: github.com/gbrandtio/rw-git releases for the declared version
  • bin/cli.js only proxies user args to bundled/downloaded rw-git-mcp-bin; no hidden shell construction
  • No credential/env harvesting, persistence, destructive file operations, or exfiltration found in JS entrypoints
  • Skill installation is documented in README.md and requires explicit CLI command
  • Bundled bin/rw-git-mcp-bin is an HTML GitHub page, suggesting packaging/download failure rather than executable malware
Behavioral surface
Source
ChildProcessFilesystemNetwork
Supply chain
UrlStrings
ManifestNo manifest risk signals triggered.
scanned 2 file(s), 3.54 KB of source, external domains: github.com

Source & flagged code

2 flagged · loading source
package.jsonView file
•scripts.postinstall = node install.js
High
Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg
•scripts.postinstall = node install.js
Medium
Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

Findings

1 High2 Medium3 Low
HighInstall Time Lifecycle Scriptspackage.json
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumNetwork
LowScripts Present
LowFilesystem
LowUrl Strings