Guardian Shield MCP Server

Universal AI security layer - an open-source MCP server for code scanning, PII detection, prompt injection defense, secret detection, dependency auditing, and audit logging. It runs locally over stdio via the published package.

People connecting DevOps & monitoring tools to Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-03-03 · ★ 3 · #90 OF 101 MAINTAINED DEVOPS & MONITORING · VERIFIED 2026-08-25

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

01 · Install Guardian Shield

Claude Code

claude mcp add sparkvibe-io-guardianshield -- uvx guardianshield

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "sparkvibe-io-guardianshield": {
      "command": "uvx",
      "args": [
        "guardianshield"
      ]
    }
  }
}

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

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

03 · What Guardian Shield can do

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

Latest releases

v1.2.1 · 2026-03-03

What's New · Inline Suppression · # guardianshield:ignore[rule1,rule2] comments to suppress specific findings · Supports Python (#), JS/TS (//), and C-style (/ /) comment syntax · Suppressed findings retain…

v1.2.0 · 2026-03-03

What's New · SARIF 2.1.0 Export · GuardianShield findings can now be exported as SARIF 2.1.0 JSON - the standard format for static analysis results used by GitHub Code Scanning, VS Code SARIF Viewer, and CI pipelines.…

v1.1.1 · 2026-03-03

What's New · Documentation & Roadmap Release - No code behavior changes from v1.1.0. · Full docs for SemanticEngine, result pipeline, and CWE-specific triage prompts in the docs site (api.md, architecture.md…

04 · Who maintains Guardian Shield

GuardianShield is maintained by sparkvibe-io. It's the only MCP server we track from this author; the repo dates to Feb 2026.

05 · Facts

repository: github.com/sparkvibe-io/guardianshield
category: DevOps & monitoring - ranked #90 of 101 actively-maintained DevOps & monitoring servers as of 2026-08-25.
registry: io.github.sparkvibe-io/GuardianShield (active, first published 2026-02-28 · 5 versions)
packages: pypi:guardianshield

06 · Guardian Shield FAQ

What is Guardian Shield?

Is Guardian Shield still maintained?

Yes - as of 2026-08-25, its last commit was 2026-03-03. We re-verify nightly.

How do I install Guardian Shield?

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

Does Guardian Shield 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 Guardian Shield

Alternatives to Guardian Shield

Maintained DevOps & monitoring servers if Guardian Shield isn't the fit.

Pairs well with

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

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