The Safe4 MCP server,
connected in one click.
Tests an AI agent's purchase against the task it was given. Paid per call in USDC via x402. Connect the official Safe4 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 Safe4 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 safe4 https://api.safe4.ai/mcp/Run in your terminal, then restart Claude Code.
Safe4 · https://api.safe4.ai/mcp/
What your AI can do with Safe4
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “safe4_price”: Price and accepted payment networks for one Safe4 decision. Free to call. Returns the same x402 terms the HTTP endpoint advertises, so an a.”
“Use “safe4_authorize”: Decide whether a proposed agent payment should proceed. Settled per call in USDC over x402. Called without ``payment`` it returns the price.”
How secure is the Safe4 MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Safe4 holds up.
Official endpoint
Operated by Safe4 (safe4.ai) 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 Safe4 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 Safe4
Choose Safe4 in the gate directory. No sign-in needed.
Use it anywhere
Safe4'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 Safe4 exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
safe4_price — Price and accepted payment networks for one Safe4 decision. Free to call. Returns the same x402 terms the HTTP endpoint advertises, so an a
safe4_authorize — Decide whether a proposed agent payment should proceed. Settled per call in USDC over x402. Called without ``payment`` it returns the price
Who runs the Safe4 MCP server?
The Safe4 MCP server at a glance
https://api.safe4.ai/mcp/Questions, answered
Is there an official Safe4 MCP server?
Yes — Safe4 operates its own remote MCP server at api.safe4.ai. 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 Safe4 to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Safe4 in the directory. No account or sign-in is needed. From then on, Safe4's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Safe4 runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Safe4 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 Safe4 in minutes. No credit card required.
Connect more than just Safe4
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Safe4 in: Claude · Claude Code · ChatGPT · Cursor · VS Code