The Sigil MCP server,
connected in one click.
Brand reviews from a public website and an optional product document. Connect the official Sigil 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 Sigil 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 sigil https://sigilbrandstudio.com/mcpRun in your terminal, then restart Claude Code.
Sigil · https://sigilbrandstudio.com/mcp
What your AI can do with Sigil
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “start_read”: Sigil's review of a company's current brand from its website and, optionally, one document (a pitch deck, memo or product brief). Use it whe.”
“Use “check_read”: Where a Brand review stands. When it is ready, the full result as text and a link to it on Sigil's site.”
How secure is the Sigil MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Sigil holds up.
Official endpoint
Operated by Sigil (sigilbrandstudio.com) 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 Sigil 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 Sigil
Choose Sigil in the gate directory. No sign-in needed.
Use it anywhere
Sigil'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 Sigil exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
start_read — Sigil's review of a company's current brand from its website and, optionally, one document (a pitch deck, memo or product brief). Use it whe
check_read — Where a Brand review stands. When it is ready, the full result as text and a link to it on Sigil's site.
Who runs the Sigil MCP server?
The Sigil MCP server at a glance
https://sigilbrandstudio.com/mcpQuestions, answered
Is there an official Sigil MCP server?
Yes — Sigil operates its own remote MCP server at sigilbrandstudio.com. 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 Sigil to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Sigil in the directory. No account or sign-in is needed. From then on, Sigil's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Sigil runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Sigil 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 Sigil in minutes. No credit card required.
Connect more than just Sigil
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Sigil in: Claude · Claude Code · ChatGPT · Cursor · VS Code