The Rules Lookup MCP server,
connected in one click.
Read the rule itself instead of a summary of it. Connect the official Rules Lookup 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 Rules Lookup 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 rules-lookup https://rules.openkrill.app/mcpRun in your terminal, then restart Claude Code.
Rules Lookup · https://rules.openkrill.app/mcp
What your AI can do with Rules Lookup
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “get_cfr_section”: Read a CFR section. Use this when the user asks what a specific US federal regulation says or cites one, for example "what does 21 CFR 11.10.”
“Use “search_cfr”: Search the CFR. Use this when the user asks which US federal regulations cover a topic, for example "which regulations mention respirator fi.”
“Use “search_federal_register”: Use this when the user asks what federal agencies have published, proposed or announced, for example "what has the FDA proposed on food dyes.”
“Use “submit_feedback”: Send feedback to the maintainers about a missing tool, broken links, a bug, or stale data. Use this to send feedback, a bug report or a feat.”
How secure is the Rules Lookup MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Rules Lookup holds up.
Official endpoint
Operated by Rules Lookup (openkrill.app) 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 Rules Lookup 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 Rules Lookup
Choose Rules Lookup in the gate directory. No sign-in needed.
Use it anywhere
Rules Lookup'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 Rules Lookup exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
get_cfr_section — Read a CFR section. Use this when the user asks what a specific US federal regulation says or cites one, for example "what does 21 CFR 11.10
search_cfr — Search the CFR. Use this when the user asks which US federal regulations cover a topic, for example "which regulations mention respirator fi
search_federal_register — Use this when the user asks what federal agencies have published, proposed or announced, for example "what has the FDA proposed on food dyes
submit_feedback — Send feedback to the maintainers about a missing tool, broken links, a bug, or stale data. Use this to send feedback, a bug report or a feat
get_feedback_reply — Read the feedback reply for a ticket from submit_feedback. Use this to read the maintainers' reply to feedback you sent with submit_feedback
index_tools — LinkedIn recruiter jobs feedback broken links: search openkrill MCP tools by task. Use this to find a tool for recruiter search, LinkedIn ke
Who runs the Rules Lookup MCP server?
The Rules Lookup MCP server at a glance
https://rules.openkrill.app/mcpQuestions, answered
Is there an official Rules Lookup MCP server?
Yes — Rules Lookup operates its own remote MCP server at rules.openkrill.app. 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 Rules Lookup to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Rules Lookup in the directory. No account or sign-in is needed. From then on, Rules Lookup's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Rules Lookup runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Rules Lookup 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 Rules Lookup in minutes. No credit card required.
Connect more than just Rules Lookup
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Rules Lookup in: Claude · Claude Code · ChatGPT · Cursor · VS Code