Lachesis MCP server
Compiler-precise code property graph for C, Python, and TypeScript, navigable over MCP.
B75/100grade B
Adoption
Growing
3 stars202 downloads/wk
Reviews
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If you have run it, two minutes of your experience saves the next person an afternoon.
Lachesis tools
No tool declarations could be read from the package source. They show once the server is installed.
Public scan report
scanner v0.1.9 · 2026-09-20 · same rubric, same numbers if you re-run it
2 medium
- Code scan217 source files scanned15/25
- –Live reliabilityno gateway calls yet and no remote to proben/a
- –Tool poisoningtools not inspected (local package is not executed); not countedn/a
- Auth qualitylocal package, no credentials required12/15
- Maintenancelast push 13 days ago15/15
- Maintainer identityregistry namespace matches repository owner7/10
Findings (2)
- mediumeval / new Function used
exec.evallachesis_cpg-0.5.3/lachesis/_atropos_catalog/models/javascript/sinks.json: … "corroboration": 2, "notes": "new Function(body)" }, { "id": "javascr… - mediumsubprocess with shell=True
exec.shell-truelachesis_cpg-0.5.3/lachesis/_atropos_catalog/models/python/sinks.json: … "corroboration": 3, "notes": "shell=True makes arg0 a shell command; the shell c…
Overall 75/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON
Install directly
claude mcp add lachesis -- uvx lachesis-cpg
Lachesis: common questions
- Is Lachesis MCP server safe?
- Mostly: it is graded B (75/100). Read the Lachesis safety report
- How do I install Lachesis?
- It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
- Does Lachesis need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is Lachesis maintained?
- The last commit was 13 days ago (2026-09-07). The latest release is v0.5.3.