PromptGuard MCP Server

by promptguard Your server? Claim it

local only

PromptGuard runs on your own machine — the client starts it, so there is no endpoint to ping. 63 installs a week from npm.

Scan prompts for injection attacks, redact PII, and audit LLM SDK usage from any MCP client

The linked repository no longer exists on GitHub — it was deleted or made private.

Installs per day peak 14 · avg 5 · +117% w/w

a month agotoday

Installs / week

npm · @promptguard/mcp-server

—

Stars

on GitHub

—

Last commit

3 releases in 90 days

—

License

language unknown

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add security -- npx -y @promptguard/mcp-server

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "security": {
      "command": "npx",
      "args": [
        "-y",
        "@promptguard/mcp-server"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.security]
command = "npx"
args = ["-y", "@promptguard/mcp-server"]

.cursor/mcp.json

{
  "mcpServers": {
    "security": {
      "command": "npx",
      "args": [
        "-y",
        "@promptguard/mcp-server"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "security": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@promptguard/mcp-server"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: PROMPTGUARD_API_KEY (PromptGuard API key (starts with pg_live_)).

Alternatives to PromptGuard

same job, measured the same way

Power Strip Security

by albertbalestrini

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

328 installs/wk 4 tools answering

Zn Gate

by usezn

The local security layer for coding agents: secret redaction, injection checks and an MCP proxy.

1 483 installs/wk local only

IA-QA Security — 30 tools

by jcjamet

Agent security: prompt injection, PII & secret scans, TLS/header/CORS audits, MCP checks. Free.

30 tools answering

MCP-Bastion

by vaquarkhan

Security middleware for MCP. Blocks prompt injection, PII leakage, and resource exhaustion.

437 installs/wk local only

Mund — MCP Security Scanner

by tyox-all

Scan for prompt injection, secrets, PII, and vet MCP servers before installation

94 installs/wk local only

Agent Skill & Config Security Audit

by tylerscomic-lab

Scan AI agent skills and configs for hidden Unicode, prompt injection and exfiltration.

answering

Agent-Shield

by startekenterprises-ai

Security scanner for AI agents: prompt injection, leaked secrets, PII, and SSRF-risk URL detection.

answering

PromptGuard Scan MCP

by promptguardscan

Paid remote MCP for LLM security scans, jailbreak checks, analytics, checkout, and readiness.

answering

PromptGuard — questions

Answers built from our own checks of this server.

Why is there no uptime for PromptGuard?

PromptGuard runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @promptguard/mcp-server was installed 63 times last week.

Is PromptGuard still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect PromptGuard?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls @promptguard/mcp-server straight from npm; nothing to host, nothing to sign up for.

How many people use PromptGuard?

The npm package @promptguard/mcp-server was installed 63 times in the last week. Week over week that is +117%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.