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

Power Strip Security

by AlbertBalestriniversion 0.2.0i★ –iComputer or cloud
Registry nameio.github.AlbertBalestrini/power-strip-security

Install

Overview

Description from the maker (original English)

Prompt-injection shield for agents: read pages, scan content, audit MCP servers and skills. x402.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Computer or cloud
  • Transport: stdio, Streamable HTTP
  • Category: Cybersecurity
  • You need to fill in: PSS_PRIVATE_KEY

Install

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

Before you install

  • Basic checks: 2 of 3 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • Can do 4 things (tools) read_url, check_prompt_injection, audit_mcp_server, audit_agent_skill
  • You fill in yourself: PSS_PRIVATE_KEY, PSS_MAX_SPEND_USD

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

  • Runs in the cloudNothing to install; it connects over the internet
  • npmNode.js installed (for the npx command)

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://api.powerstripsecurity.workers.dev/mcp

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "power-strip-security": {
      "command": "npx",
      "args": [
        "-y",
        "power-strip-security-mcp"
      ],
      "env": {
        "PSS_PRIVATE_KEY": "your-value",
        "PSS_MAX_SPEND_USD": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http power-strip-security https://api.powerstripsecurity.workers.dev/mcp

Or run it on your computer

claude mcp add power-strip-security --env PSS_PRIVATE_KEY=your-value --env PSS_MAX_SPEND_USD=your-value -- npx -y power-strip-security-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "power-strip-security": {
      "url": "https://api.powerstripsecurity.workers.dev/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "power-strip-security": {
      "command": "npx",
      "args": [
        "-y",
        "power-strip-security-mcp"
      ],
      "env": {
        "PSS_PRIVATE_KEY": "your-value",
        "PSS_MAX_SPEND_USD": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "power-strip-security": {
      "type": "http",
      "url": "https://api.powerstripsecurity.workers.dev/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "power-strip-security": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "power-strip-security-mcp"
      ],
      "env": {
        "PSS_PRIVATE_KEY": "your-value",
        "PSS_MAX_SPEND_USD": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://api.powerstripsecurity.workers.dev/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • PSS_PRIVATE_KEY secret required env
    Private key (0x...) of a dedicated wallet with a little USDC on Base
  • PSS_MAX_SPEND_USD env
    Spending cap per session in US dollars (default 1)

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

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • read_url

    Fetch a public web page or PDF with hidden text and exfiltration links removed, plus a prompt-injection report. Use it instead of fetching untrusted URLs yourself; for content you already have, use check_prompt_injection. Returns risk (0-1), level, findings, content and wrapped_t

  • check_prompt_injection

    Scan HTML or text you already have (an email, a document, a tool result, a page fetched elsewhere) for prompt injection before it reaches your prompt. To fetch a URL, use read_url instead; for MCP tool definitions or skill files, use audit_mcp_server or audit_agent_skill. Returns

  • audit_mcp_server

    Check an MCP server for tool poisoning before connecting: hidden instructions, sensitive-file access, exfiltration parameters, cross-tool shadowing, rug pulls. For skills or AGENTS.md use audit_agent_skill. Give url (tools are listed read-only, never called) or the pasted tools,

  • audit_agent_skill

    Check an agent skill (SKILL.md with its scripts and references) or AGENTS.md, CLAUDE.md, .cursorrules before loading it: prompt injection, curl | bash, encoded commands, credential theft, exfiltration, hardcoded keys, persistence. For MCP servers use audit_mcp_server. Give files

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 9, 2026

  • ! Caution

    Maker matches the repo

    The publisher (AlbertBalestrini) is not the repo owner (AlbertBalestrini); someone else may have listed it

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 150 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 4 tool descriptions and found no hidden instructions to the AI

Compared with others in Cybersecurityi

  • More stars than 0% of the other 1003 servers in this category
  • Published to the registry more recently than 80% of the other 1003 servers in this category
  • Basic checks equal to or better than 33% of the other 1003 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 Power Strip Security safe?

It passed 2 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?

You need to fill in: PSS_PRIVATE_KEY

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 9 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: SUNGLASSES, KillerSkills, Draugr

Alternatives

Servers in the same category from other makers, sorted by stars.

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

SUNGLASSES

Input firewall for AI agents: scan text and files before they're read. Local, no network by default.

by sunglasses-devEarly↓ 549/wkUpdated today

Runs on your computer

KillerSkills

Security verdicts for agent skills and MCP servers, from sandbox runs, before you install them.

by cyligence-karimGrowing↓ 3.1K/wkUpdated today

Runs on your computer

Draugr

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

by draugr-devVery newUpdated today

Runs on your computer✓ draugr.dev

README from the maker

No README found in the repo

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