Skylos MCP Server

Open-source, local-first checks for dead code, security issues, secrets, quality regressions, and AI-code mistakes before merge.

People who work with code quality, devsecops and sast and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-30 · ★ 840 · #4 OF 180 MAINTAINED DEVELOPER TOOLS · VERIFIED 2026-09-30

Apache-2.0 · Python servers · how we verify → /methodology

01 · Install Skylos

Claude Code

claude mcp add duriantaco-skylos -- uvx skylos

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "duriantaco-skylos": {
      "command": "uvx",
      "args": [
        "skylos"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license Apache-2.0 - declared in the repository

pypi package skylos - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.duriantaco is GitHub-verified and matches the repo owner

03 · What Skylos can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v4.43.0 · 2026-09-30

4.43.0 (2026-09-30) · add project standards skills and quality gates · reduce FPs and attest upload coverage · trace urllib Request destination for SSRF

v4.42.0 · 2026-09-29

4.42.0 (2026-09-29) · add semantic flow evidence for Python LLM output validation · render behavior tables for console encoding · wait for required CI before creating releases · exempt test callbacks from length rule…

v4.41.0 · 2026-09-28

4.41.0 (2026-09-28) · report checkout state for commit grades · align AI provenance counts with finding arrays · accept Skylos Cloud's storage upload URL for large reports

04 · Who maintains Skylos

skylos is maintained by duriantaco. It's the only MCP server we track from this author; the repo dates to Apr 2025.

05 · Facts

repository: github.com/duriantaco/skylos
category: developer tools - ranked #4 of 180 actively-maintained developer tools servers as of 2026-09-30.
release cadence: 10+ releases in the last 90 days (latest 2026-09-30)
registry: io.github.duriantaco/skylos (active, first published 2026-03-11)
packages: pypi:skylos

06 · Skylos FAQ

What is Skylos?

Open-source, local-first checks for dead code, security issues, secrets, quality regressions, and AI-code mistakes before merge.

Is Skylos still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-30 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Skylos?

Run `uvx skylos`. You can also paste the ready-made client config above.

Does Skylos run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Skylos

Alternatives to Skylos

Maintained developer tools servers if Skylos isn't the fit.

Pairs well with

Servers that cover what Skylos doesn't - only shown when the pairing reason fits the companion.

head to head · Skylos vs Xcode Build MCP · Skylos vs Sentry MCP · Skylos vs Next Devtools MCP

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