The Catalog MCP server,
connected in one click.
Search Avva for an expert, then connect their model - judgment from real past decisions. Connect the official Catalog 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 Catalog 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 catalog-avva https://avva.chat/mcp-catalogRun in your terminal, then restart Claude Code.
Catalog · https://avva.chat/mcp-catalog
What your AI can do with Catalog
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “search”: Find published experts by domain, decision types, or wording. Returns result ids for fetch. Read-only.”
“Use “fetch”: Full catalog card for one expert by id (their slug), including the MCP connector URL your agent connects to consult them. Read-only.”
How secure is the Catalog MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Catalog holds up.
Official endpoint
Operated by Catalog (avva.chat) 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 Catalog 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 Catalog
Choose Catalog in the gate directory. No sign-in needed.
Use it anywhere
Catalog'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 Catalog exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
search — Find published experts by domain, decision types, or wording. Returns result ids for fetch. Read-only.
fetch — Full catalog card for one expert by id (their slug), including the MCP connector URL your agent connects to consult them. Read-only.
Who runs the Catalog MCP server?
The Catalog MCP server at a glance
https://avva.chat/mcp-catalogQuestions, answered
Is there an official Catalog MCP server?
Yes — Catalog operates its own remote MCP server at avva.chat. 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 Catalog to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Catalog in the directory. No account or sign-in is needed. From then on, Catalog's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Catalog runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Catalog 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 Catalog in minutes. No credit card required.
Connect more than just Catalog
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Catalog in: Claude · Claude Code · ChatGPT · Cursor · VS Code