Payment Guard MCP Server

by mlawsonking Your server? Claim it

local only

Payment Guard MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 49 installs a week from npm. Last commit 17 Sep 2026.

Pre-send risk check for AI agents that move money — screen an address or payment URL before sending.

Installs per day peak 273 · avg 16 · +658% w/w

a month agotoday

Installs / week

npm · payment-guard-mcp

Stars

0 open issues

17 Sep 2026

Last commit

0 releases in 90 days

MIT

License

JavaScript

What the code does

We read the source, 1 h ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

File ships in the package but is absent from the source [пакет] core/tools/_schema.js:1, [пакет] core/engines/code.js:1, [пакет] core/tools/code.js:1 и ещё 17

этот файл ставится пользователю, но в репозитории его нет

Runs an external command agent-guards-plugin/core/cli/exec.js:35, agent-guards/cli/exec.js:32

    const r = spawnSync(comspec, ['/d', '/s', '/c', line], {

Page executes code built at runtime code-guard/index.html:102, email-guard/index.html:131, package-guard/index.html:127

    out.innerHTML = head + "\n\n" + JSON.stringify(j,null,2);

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

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 payment-guard-mcp -- npx -y payment-guard-mcp

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

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

~/.codex/config.toml

[mcp_servers.payment-guard-mcp]
command = "npx"
args = ["-y", "payment-guard-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

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

Alternatives to Payment Guard MCP

same job, measured the same way

Sentinel

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Presidio Hardened X402 MCP

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57 installs/wk local only

Frisk

by tryfrisk

Screen the counterparty of an x402 payment before an agent pays it. Runs offline by default.

42 installs/wk local only

Backend

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Deterministic pre-trade risk checks for autonomous AI trading agents.

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SendCheck — EVM address verification (x402)

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Pre-send EVM address checks: free pre-check, $0.01 check, $0.05 deep scan. x402: payment is auth.

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Verantis MCP

by m9labs-railscope

Verified directory for machine payments (x402 & MPP): check services and wallets before agents pay.

138 installs/wk 4 tools answering

Payment Guard MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Payment Guard MCP?

Payment Guard MCP 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 payment-guard-mcp was installed 49 times last week.

How do I connect Payment Guard MCP?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls payment-guard-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Payment Guard MCP?

The npm package payment-guard-mcp was installed 49 times in the last week. Week over week that is +658%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Payment Guard MCP open source?

Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.