402shield MCP Server

by mitchsingh Your server? Claim it

answering

402shield is answering right now. Last checked 15 min ago. It exposes 1 tools.

x402 payment security and pre-execution transaction risk screening for autonomous AI agents.

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

Uptime history 5 days of history

5 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

138 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 8 October 2026. No other catalogue keeps this.

8 Oct a tool description was rewritten preflight_payment

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

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add 402shield --transport http https://four02shield.onrender.com/mcp

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

{
  "mcpServers": {
    "402shield": {
      "url": "https://four02shield.onrender.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.402shield]
url = "https://four02shield.onrender.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "402shield": {
      "url": "https://four02shield.onrender.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "402shield": {
      "url": "https://four02shield.onrender.com/mcp"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

preflight

preflight_payment

Prepare the exact paid 402Shield request that must be completed before an autonomous payment executes. Submit the returned POST request with an x402-capable client. The paid response is ALLOW, REVIEW, or BLOCK. Execute the intended payment only after ALLOW; REVIEW and BLOCK should stop execution by default. Price: $0.005 USDC.

Endpoints

URL	Transport	State	Latency	Checked
https://four02shield.onrender.com/mcp	streamable-http	answering	84 ms	15 min ago

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402shield — questions

Answers built from our own checks of this server.

What can 402shield do?

It exposes 1 tools, read directly from the server on our last check. Among them: preflight_payment. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is 402shield working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 138 ms. The bar chart above shows every period we have measured.

Is 402shield 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 402shield?

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 is a remote server, so there is nothing to install — the client connects to the address.

Does 402shield need an API key?

No. 402shield completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is 402shield?

It answers our handshake in 138 ms on average, which is faster than 74% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.