The presign-guard MCP server,
connected in one click.
Pre-sign, token and approval checks for agents: green/orange/red for signatures, tokens, wallets. Connect the official presign-guard MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add presign-guard to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http presign-guard-presign-guard https://presign-guard.fizzl.eu/mcpRun in your terminal, then restart Claude Code.
presign-guard · https://presign-guard.fizzl.eu/mcp
What your AI can do with presign-guard
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “presign_quick_check”: Free: the green/orange/red verdict only, for a transaction, token approval, EIP-712 signature, XRP Ledger transaction (type xrpl) or Algoran.”
“Use “token_quick_verdict”: Free: the green/orange/red verdict and grade only, for a Solana or EVM token your agent is about to buy, hold or accept. Limited to 10 free.”
“Use “presign_check”: Paid ($0.01 USDC via x402 on Base or Solana): call this before you sign. Send the transaction, token approval or EIP-712 signature (Permit,.”
“Use “presign_check_explain”: Paid ($0.03 USDC via x402 on Base or Solana): the same verdict and reason codes as presign_check, plus a 3 to 5 sentence plain-language expl.”
How secure is the presign-guard MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how presign-guard holds up.
Official endpoint
Operated by presign-guard (fizzl.eu) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If presign-guard adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick presign-guard
Choose presign-guard in the gate directory. No sign-in needed.
Use it anywhere
presign-guard's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools presign-guard exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
presign_quick_check — Free: the green/orange/red verdict only, for a transaction, token approval, EIP-712 signature, XRP Ledger transaction (type xrpl) or Algoran
token_quick_verdict — Free: the green/orange/red verdict and grade only, for a Solana or EVM token your agent is about to buy, hold or accept. Limited to 10 free
presign_check — Paid ($0.01 USDC via x402 on Base or Solana): call this before you sign. Send the transaction, token approval or EIP-712 signature (Permit,
presign_check_explain — Paid ($0.03 USDC via x402 on Base or Solana): the same verdict and reason codes as presign_check, plus a 3 to 5 sentence plain-language expl
token_verdict — Paid ($0.01 USDC via x402 on Base or Solana): call this before your agent buys, holds or accepts a token. Send the chain (solana, base, ethe
wallet_approvals — Paid ($0.02 USDC via x402 on Base or Solana): audit the open token approvals of an EVM wallet (base, ethereum, arbitrum, optimism, polygon,
screen_wallet — Paid ($0.01 USDC via x402 on Base or Solana): call this before your agent pays an address, or before accepting money from one. Send any chai
feedback — Report a bug, a missing feature or anything else about this service, in a structured way. Free. A person reads every report; nothing is run
Who runs the presign-guard MCP server?
The presign-guard MCP server at a glance
https://presign-guard.fizzl.eu/mcpQuestions, answered
Is there an official presign-guard MCP server?
Yes — presign-guard operates its own remote MCP server at presign-guard.fizzl.eu. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect presign-guard to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick presign-guard in the directory. No account or sign-in is needed. From then on, presign-guard's tools are available in every client you've connected to gate.
Do I need to host anything?
No. presign-guard runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the presign-guard MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect presign-guard in minutes. No credit card required.
Connect more than just presign-guard
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up presign-guard in: Claude · Claude Code · ChatGPT · Cursor · VS Code