The Caliper MCP server,
connected in one click.
Geometry and CAD file metadata extraction for STL, OBJ, PLY, PCD, LAS/LAZ, glTF/GLB. Connect the official Caliper 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 Caliper 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 caliper https://caliper.fit/mcp/Run in your terminal, then restart Claude Code.
Caliper · https://caliper.fit/mcp/
What your AI can do with Caliper
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “format_detect”: Detect the geometry file format from a filename or URL. Returns the detected format name and whether it is currently supported. Use.”
“Use “feature_request”: Request a feature or format that Caliper doesn't support yet. Free, no payment required. Use this when you need a capability that C.”
“Use “format_auto”: Auto-detect geometry file format and extract metadata statistics. Accepts a 3D geometry file via URL or base64 and returns structured.”
“Use “format_stl”: Extract metadata from an STL file (ASCII or binary). Returns triangle count, bounding box, surface area, volume, manifold analysis.”
How secure is the Caliper MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Caliper holds up.
Official endpoint
Operated by Caliper (caliper.fit) 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 Caliper 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 Caliper
Choose Caliper in the gate directory. No sign-in needed.
Use it anywhere
Caliper'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 Caliper exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
format_detect — Detect the geometry file format from a filename or URL. Returns the detected format name and whether it is currently supported. Use
feature_request — Request a feature or format that Caliper doesn't support yet. Free, no payment required. Use this when you need a capability that C
format_auto — Auto-detect geometry file format and extract metadata statistics. Accepts a 3D geometry file via URL or base64 and returns structured
format_stl — Extract metadata from an STL file (ASCII or binary). Returns triangle count, bounding box, surface area, volume, manifold analysis
format_obj — Extract metadata from an OBJ file. Returns vertex/normal/texcoord/face counts, triangle/quad/polygon breakdown, material and group
format_ply — Extract metadata from a PLY file (ASCII or binary). Returns vertex/face counts, element properties, feature detection (normals, col
format_pcd — Extract metadata from a PCD point cloud file. Returns point count, field definitions, data format, organization, viewpoint, feature
format_las — Extract metadata from a LAS or LAZ point cloud file. Returns LAS version, point format, point count, scale factors, offsets, boundi
+ 2 more tools once connected
Who runs the Caliper MCP server?
The Caliper MCP server at a glance
https://caliper.fit/mcp/Questions, answered
Is there an official Caliper MCP server?
Yes — Caliper operates its own remote MCP server at caliper.fit. 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 Caliper to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Caliper in the directory. No account or sign-in is needed. From then on, Caliper's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Caliper runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Caliper 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 Caliper in minutes. No credit card required.
Connect more than just Caliper
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Caliper in: Claude · Claude Code · ChatGPT · Cursor · VS Code