MCP server · Security

Agentic Wallet Guardian MCP server

Your AI can check a crypto transaction before it is signed and get a clear allow, warn or block answer.

Agentic Wallet Guardian is a small security helper you run yourself. It looks at a crypto transaction an AI agent wants to make and gives back a simple answer: allow it, warn about it, or block it. It is handy for people testing AI agents that touch blockchain wallets, and for teams that want to keep their wallet details on their own machines.

What is an MCP server? The 30-second version

On its own, your AI can only chat. An MCP server is a small helper program that gives your AI a new skill or a connection to another service. This one connects your AI to a wallet safety checker that runs on your own computer. When your AI wants to send a crypto transaction, it asks this helper first, and the helper replies with allow, warn or block plus the reasons.

What this MCP server does

You ask your AI to do something with a crypto wallet, like send tokens or approve spending. Your AI turns that into a proposed action and sends it to this helper. The helper checks the wallet, the token, the contract and any known bad addresses, then runs your own policy rules. It adds up all the signals into a risk score from 0 to 100. Finally it tells your AI whether to allow, warn or block, and explains why in plain words.

Flow diagram: you ask your AI “Check this wallet transfer before I sign it”, on your own computer the Agentic Wallet Guardian MCP server works with your crypto wallet, and you get back allow, warn or block.

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What you can do with it

Check a proposed crypto transaction before it is signed
Get a plain-language reason for an allow, warn or block decision
See a risk score from 0 to 100 for each proposed action
Apply your own spending caps and reputation rules
Check an address against a local list of sanctioned addresses
Look up token and contract details from real data sources
Review an agent's past decisions and history

What it gives back to you

You get back a decision word: ALLOW, WARN or BLOCK. Along with it comes a risk score, the list of signals that fed into that score, and the policy rules that fired. The chat shows this as a short explanation in everyday words, so you can see exactly why the answer came out that way.

Before you start

What you need

Python 3.10 or newer
The project files from the GitHub repository
An RPC endpoint URL if you want real wallet and token data (a web address that talks to the blockchain)
A free GoPlus API key if you want extra token and contract checks

Good to know

This tool can block or allow real crypto transactions, so test it carefully before letting an agent act on its decisions, and remember the local threat lists are empty by default until you fill them.

Install it with your AI

Add Agentic Wallet Guardian MCP server to your AI, no technical skills needed

You don't install anything by hand. You copy one prompt, paste it into an AI that can work on your computer, and it checks, installs and connects the server for you, asking you when it needs something.

Sign in to get the install prompt

Members get a ready-made prompt that lets the Claude desktop app check Agentic Wallet Guardian MCP server, install it and connect it for them, step by step. You don't need any technical skills: you copy, paste and answer a few questions. Your connected AI can also find and install any of the 4,066 MCP servers here for you.