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PopNx MCPMCP servers for people who use AI · explained in plain words

Flagrix

by flagrix-ioversion 0.5.1i★ 2iRuns on your computer
Registry nameio.github.flagrix-io/flagrix

How to install

What it does

Scan GitHub repos and profiles for malware before cloning — commit-pinned risk verdicts for agents

  • Connects Runs on your computer
  • Account or key No key needed
  • Category Cybersecurity

Install

Pick the AI app you use, then copy the settings.

Passed 3/3 checks · Runs on your computer · ✓ Commands checked Nov 14, 2026

First: which AI do you use?

Pick your app and the steps appear below.

Works with Claude, with some setup first

Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Let AI install it

Copy this message into a Claude chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Flagrix for Claude on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "flagrix": { "command": "npx", "args": [ "-y", "flagrix", "mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the Flagrix tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install Node.js (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    node -v
    • A version number such as v26.13.1 = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed

    Open the Node.js download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v

    Install once; it works for everything that needs Node.js

  2. Open the Claude desktop app’s settings file

    SettingsDeveloperEdit Config

  3. Paste these settings and save the file

    {
      "mcpServers": {
        "flagrix": {
          "command": "npx",
          "args": [
            "-y",
            "flagrix",
            "mcp"
          ]
        }
      }
    }
  4. Quit Claude and open it again

  5. Try it

    Use Flagrix and tell me what you can do for me, then show me one thing

    ✓ If Claude says it is using Flagrix or shows a Flagrix tool in the answer, you are connected

1 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

  • GITHUB_TOKEN Optional GitHub token — raises API rate limits and enables private-repo scans

Descriptions are as written by the maker.

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Flagrix yet

Flagrix runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Flagrix

  • Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
  • Install Node.js on your computer first (one time)
  • Install Node.js on your computer first (one time)
  • Install Node.js on your computer first (one time)

B · Others in Cybersecurity that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Works with Claude Code, with some setup first

Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a Claude Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Flagrix for Claude Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): claude mcp add --scope user flagrix -- npx -y flagrix mcp 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the Flagrix tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install Node.js (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    node -v
    • A version number such as v26.13.1 = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed

    Open the Node.js download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v

    Install once; it works for everything that needs Node.js

  2. Open Terminal

    Mac: press Command+Space and type Terminal · Windows: open PowerShell

  3. Paste this command and press Enter

    claude mcp add --scope user flagrix -- npx -y flagrix mcp
  4. Type /mcp in Claude Code

    You should see Flagrix listed as connected

  5. Try it

    Use Flagrix and tell me what you can do for me, then show me one thing

    ✓ If Claude Code says it is using Flagrix or shows a Flagrix tool in the answer, you are connected

1 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

  • GITHUB_TOKEN Optional GitHub token — raises API rate limits and enables private-repo scans

Descriptions are as written by the maker.

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a Cursor chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Flagrix for Cursor on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "flagrix": { "command": "npx", "args": [ "-y", "flagrix", "mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the Flagrix tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install Node.js (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    node -v
    • A version number such as v26.13.1 = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed

    Open the Node.js download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v

    Install once; it works for everything that needs Node.js

  2. Click this button to open Cursor

    Open in Cursor

    Cursor asks you to confirm; click Install

  3. Open the AI chat in Cursor in Agent mode

  4. Try it

    Use Flagrix and tell me what you can do for me, then show me one thing

    ✓ If Cursor says it is using Flagrix or shows a Flagrix tool in the answer, you are connected

1 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

  • GITHUB_TOKEN Optional GitHub token — raises API rate limits and enables private-repo scans

Descriptions are as written by the maker.

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a VS Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Flagrix for VS Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "servers": { "flagrix": { "type": "stdio", "command": "npx", "args": [ "-y", "flagrix", "mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the Flagrix tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install Node.js (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    node -v
    • A version number such as v26.13.1 = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed

    Open the Node.js download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v

    Install once; it works for everything that needs Node.js

  2. Click this button to open VS Code

    Open in VS Code

    VS Code asks you to confirm; click Install

  3. Open the AI chat in VS Code in Agent mode

  4. Try it

    Use Flagrix and tell me what you can do for me, then show me one thing

    ✓ If VS Code says it is using Flagrix or shows a Flagrix tool in the answer, you are connected

1 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

  • GITHUB_TOKEN Optional GitHub token — raises API rate limits and enables private-repo scans

Descriptions are as written by the maker.

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Flagrix💬 Discussion →
For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user flagrix -- npx -y flagrix mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "flagrix": {
      "command": "npx",
      "args": [
        "-y",
        "flagrix",
        "mcp"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "flagrix": {
      "command": "npx",
      "args": [
        "-y",
        "flagrix",
        "mcp"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "flagrix": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "flagrix",
        "mcp"
      ]
    }
  }
}

Values you fill in

  • GITHUB_TOKEN secret env
    Optional GitHub token — raises API rate limits and enables private-repo scans

Descriptions are as written by the maker.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

Downloads per weeki
248/wk
Connection
Runs on your computer
Latest versioni
0.5.1
Published to registryi
Nov 11, 2026
Code last changedi
Nov 11, 2026
Maker
flagrix-io
Packages
npm: flagrix
Registry status
Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatRaycast

All apps, with pros and cons →

Related guides

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 15, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account flagrix-io, which owns the repo

  • ✓ Pass

    Still maintained

    Code last changed 4 days ago

  • ✓ Pass

    Has a licence

    Uses MIT

  • – Not applicable

    Endpoint responds

    This one runs on your computer; there is no internet endpoint

  • – Not applicable

    Sign-in with OAuth

    Runs on your computer and uses local settings instead

  • … Not checked yet

    No hidden instructions in tool descriptions

    Runs on your computer; we can only read tool lists from internet endpoints

Published vulnerabilities (OSV.dev)

No entries on OSV.dev for flagrix@0.5.1

Checks only this package version, not every dependency · checked Nov 15, 2026

What we check → · JSON

Makers: ask for a re-check or report wrong info

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

Sign in to post

User reviews

No reviews yet

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Compared with others in Cybersecurityi

  • More stars than 82% of the other 1066 servers in this category
  • Published to the registry more recently than 88% of the other 1066 servers in this category
  • Basic checks equal to or better than 100% of the other 1066 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Flagrix safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed 4 days ago, and the latest version (0.5.1) reached the registry 4 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: GitHits, Dependency Management MCP Server, Snyk MCP, Draugr, Spotdb

Similar alternatives

Same category, other makers, commands already checked. Official ones first, then by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

GitHits

Search public open-source code, documentation, metadata, vulnerabilities, changelogs, and examples.

by githits-comGrowing↓ 3.8K/wk★ 136Updated 6 days ago

Computer or cloud✓ service owner · githits.com

Snyk MCP

Easily find and fix security issues in your applications leveraging Snyk platform capabilities.

by snykWidely used↓ 762.1K/wk★ 62Updated 6 months ago

Runs on your computer✓ service owner · snyk.io

Draugr

Security scanning for AI agents: SAST, SCA, secrets, IaC, DAST, ranked by real risk.

by draugr-devEarly★ 29Updated today

Runs on your computer✓ service owner · draugr.dev

Spotdb

Ephemeral data sandbox for AI workflows with guardrails and security

by aliengiraffeEarly★ 21Updated 13 months ago

Runs on your computer✓ aliengiraffe.ai
  • GitHits — Cloud or install on your computer · No key needed
  • Dependency Management MCP Server — Runs in the cloud, nothing to install · No key needed
  • Snyk MCP — Installs on your computer · No key needed
  • Draugr — Installs on your computer · No key needed
  • Spotdb — Installs on your computer · No key needed

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

flagrix

Scan GitHub repositories and profiles for malware before you clone — from the terminal, CI, or an AI agent. The same commit-pinned verdict as the Flagrix browser extension, made callable.

npx flagrix scan https://github.com/some-org/coding-assignment
  some-org/coding-assignment @ 3f9c2a1

HIGH RISK — Do not clone security score 12/100 3 files scanned · 10 dependencies · 2 issues

CRITICAL Data exfiltration patterns detected: Keylogger Pattern assignment.js:14 14 document.addEventListener("keydown", (e) => send(e.key))

Built after real fake-recruiter campaigns ("coding assignment" repos that steal wallets, SSH keys, and browser sessions) started targeting developers.

Commands

flagrix scan <url | owner/repo>   # scan a repository (--ref <branch|sha>)

flagrix scan-user # score a GitHub profile for scam signals flagrix mcp # MCP server (stdio) for AI agents

Exit codes

codemeaning
0low risk
1scan failed
2medium risk — review before proceeding
3high risk — do not clone
4scan incomplete — not enough of the repository was read to give a verdict

--json (automatic when stdout is piped) emits the full result. The verdict is pinned to the scanned commit (commitSha in the JSON): every file is read at that SHA, so a push mid-scan or after the verdict can't silently invalidate it.

Incomplete scans (exit 4)

A repository scan is one tree request plus up to ~200 file reads, and GitHub allows 60 requests an hour without a token. When the budget runs out part way through, the rest of the repository is never looked at — so a "low risk, no findings" result over 30 of 180 files is the absence of looking, not a clean bill of health.

The result says so (scanSummary.complete: false, with scanSummary.incompleteReason of "rate-limit" or "fetch-errors"), the human output withholds the verdict and the score, and the exit code is 4 instead of 0. In CI the exit code is the decision and nobody reads stdout, so a gate on flagrix scan stops here as it does on any non-zero code. Findings are the other way round: evidence found is evidence however little else was read, so a medium or high verdict keeps its own code and the coverage note reads "there may be more".

In --json output, read verdict and coverage rather than riskLevel:

{

"verdict": "incomplete", "coverage": { "complete": false, "unreliableClear": true, "filesRead": 30, "filesUnread": 150, "reason": "rate-limit" }, "riskLevel": "low", "safeToClone": false, ... }

  • verdict is "low", "medium", "high", or "incomplete" when a low result rests on files that were never read. It matches the exit code (0 / 2 / 3 / 4).
  • coverage.unreliableClear is true exactly when verdict is "incomplete"; coverage.complete is false on any partial scan, including a medium or high one. reason is present only when coverage is incomplete.
  • riskLevel, riskScore and the rest of the engine's result are unchanged, so existing consumers keep working — but riskLevel is the engine's reading of the files it did see, so on an incomplete scan it can still say "low".
  • safeToClone is kept for compatibility and is now false whenever verdict is "incomplete" (in 0.4.0 and earlier it could be true there). Gate on verdict or the exit code instead.

The MCP tool's JSON block carries the same fields.

Set a token to make this rare: GITHUB_TOKEN raises the budget to 5,000/h.

AI agents

claude mcp add flagrix -- npx -y flagrix mcp

Tools: scan_github_repo, scan_github_user. A Claude Code hook that gates every git clone on a scan ships in hooks/ — see docs/agent-gating.md.

Tokens & rate limits

Unauthenticated scans use GitHub's 60 req/h budget (a scan issues one request per scanned file, up to ~200). Set GITHUB_TOKEN (or FLAGRIX_GITHUB_TOKEN, or --token) to raise it to 5,000/h and to scan private repositories. A scan that runs out of budget reports partial coverage and exits 4 — see Incomplete scans.

Privacy

Fully local. No telemetry, no accounts, no Flagrix backend — the only network calls go to the GitHub/npm APIs and the public detection-rules repository (signature refresh, cached 6 h, with a bundled offline snapshot).

Dependencies are also checked against the OSV malicious-package feed (osv-malicious.json from the same repository: every npm/PyPI package the OpenSSF malicious-packages project has confirmed malicious). The feed is downloaded and matched locally, so dependency names never leave your machine. It is cached 6 h and revalidated with its ETag. Set FLAGRIX_OSV_FEED=0 to skip it (the curated list in the signatures still applies).

How it works

Scanning logic lives in @flagrix/scanner-core (MIT), signatures in flagrix-detection-rules (MIT) — the same engine and rules the browser extension uses. Verdicts are risk assessments, not definitive fraud determinations; always verify through official channels.

AI Disclosure

This project leverages Claude AI for boilerplate generation, test-suite expansion, and optimization. All AI-generated code is strictly reviewed, refactored, and verified by human maintainers before merging.

License

MIT — see LICENSE.