The CheckFitment MCP server,
connected in one click.
Bolt patterns and wheel specs by vehicle, wheel and tire fitment, spacer and gear ratio maths. Connect the official CheckFitment 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 CheckFitment 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 checkfitment https://checkfitment.com/mcp?src=mcpRun in your terminal, then restart Claude Code.
CheckFitment · https://checkfitment.com/mcp?src=mcp
What your AI can do with CheckFitment
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “bolt_pattern_lookup”: Use for "what is the bolt pattern on a 2019 Ford F-150", lug torque, center bore, thread size, OEM wheel size, offset or tire size of a vehi.”
“Use “wheel_fitment_check”: Use to compare a current wheel (and tire) with a new one: how far the outer edge pokes toward the fender and the inner edge toward the suspe.”
“Use “tire_size_compare”: Use for "what changes if I go from 265/70R17 to 285/75R17", "how far off is my speedometer with 33s", or odometer error after a tire change.”
“Use “wheel_spacer_calculator”: Use for "do I need spacers", "what spacer gets +35 wheels to +20", "is a 10 mm slip-on spacer safe". A spacer lowers the effective offset by.”
How secure is the CheckFitment MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how CheckFitment holds up.
Official endpoint
Operated by CheckFitment (checkfitment.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 CheckFitment 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 CheckFitment
Choose CheckFitment in the gate directory. No sign-in needed.
Use it anywhere
CheckFitment'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 CheckFitment exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
bolt_pattern_lookup — Use for "what is the bolt pattern on a 2019 Ford F-150", lug torque, center bore, thread size, OEM wheel size, offset or tire size of a vehi
wheel_fitment_check — Use to compare a current wheel (and tire) with a new one: how far the outer edge pokes toward the fender and the inner edge toward the suspe
tire_size_compare — Use for "what changes if I go from 265/70R17 to 285/75R17", "how far off is my speedometer with 33s", or odometer error after a tire change.
wheel_spacer_calculator — Use for "do I need spacers", "what spacer gets +35 wheels to +20", "is a 10 mm slip-on spacer safe". A spacer lowers the effective offset by
gear_ratio_calculator — Use for "what does my 3.73 axle behave like on 35s", "what ratio do I need to regear for 33s", RPM at highway speed after a tire change, or
bolt_pattern_facts — Use for "what is 5x114.3 in inches", "is 5x114.3 the same as 5x115", "will 6x135 wheels fit 6x139.7", or which vehicles use a pattern. Conve
Who runs the CheckFitment MCP server?
The CheckFitment MCP server at a glance
https://checkfitment.com/mcp?src=mcpQuestions, answered
Is there an official CheckFitment MCP server?
Yes — CheckFitment operates its own remote MCP server at checkfitment.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 CheckFitment to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick CheckFitment in the directory. No account or sign-in is needed. From then on, CheckFitment's tools are available in every client you've connected to gate.
Do I need to host anything?
No. CheckFitment runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the CheckFitment 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 CheckFitment in minutes. No credit card required.
Connect more than just CheckFitment
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up CheckFitment in: Claude · Claude Code · ChatGPT · Cursor · VS Code