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Local explanation of reproducibility signals and toolchain contradictions without exact versions...
About
Local explanation of reproducibility signals and toolchain contradictions without exact versions...
Security Report
Toolchain Lens is a well-designed local-first MCP server with strong security controls. The codebase implements proper path traversal protections, file allowlisting, and deliberately avoids exposing sensitive data like versions or secrets. Minor code quality issues around error handling and regex validation do not materially impact security posture. Permissions are appropriately scoped to file I/O within a bounded workspace. Supply chain analysis found 1 known vulnerability in dependencies (0 critical, 1 high severity). Package verification found 1 issue.
5 files analyzed · 6 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-mrfentmen-toolchain-lens-mcp": {
"args": [
"-y",
"toolchain-lens-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
toolchain-lens-mcp
Toolchain Lens is a local MCP tool for explaining reproducibility signals in small projects. It looks at package-manager files, runtime declarations, container files, and CI configuration, then reports coarse contradictions and missing anchors.
Tool
explain_toolchain: inspect a local project without returning exact versions, dependency names, command output, environment values, or secret contents.
Safety
- Local paths only, bounded by
TOOLCHAIN_LENS_ROOTand realpath checks. - Reads only a bounded allowlist of toolchain and CI files.
- Skips Git data, dependencies, build output, coverage, caches, and vendor directories.
- Returns filenames, categories, and structural signal labels only.
- This is an explanation aid, not a build executor, lockfile validator, or vulnerability scanner.
Run
npm install
npm run build
node dist/index.js
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