Caliper

fit.caliperPublished by caliper.fitOfficial publisherv0.1.1Updated Oct 24, 2026

Geometry and CAD file metadata extraction for STL, OBJ, PLY, PCD, LAS/LAZ, glTF/GLB.

VerifiedStreamable HTTPWeb executableData & AnalyticsMedia & Design

Overview

AI-generated overview

Remote MCP server that extracts metadata and statistics from 3D geometry and CAD files such as STL, OBJ, PLY, PCD, LAS/LAZ and glTF/GLB.

What you can do
  • Detect the format of a geometry file from a filename or URL and check whether it is supported
  • Extract metadata from STL, OBJ, PLY, PCD, LAS/LAZ and glTF/GLB files supplied by URL or base64, including bounding boxes, counts, manifold checks and feature flags
  • Auto-detect the format and return structured metadata in one call
  • Analyze up to 10 mixed-format files in a single batch request with one quote and one payment
  • Submit feature or format requests for capabilities that are not yet supported
When to use it
Useful when an assistant needs to inspect 3D or point-cloud files and report geometry statistics, such as triangle counts, bounding boxes, watertightness or point density, without opening a modeling tool. Check format support first to avoid paying for an unsupported file.
Requirements
A remote streamable HTTP endpoint; no local package or runtime. Files are passed as a URL or base64 payload. Paid analysis tools require payment via x402 (USDC on Base) or card via MPP (Stripe); format detection and feature requests are free.
Before you install
Most analysis tools cost money per call, and batch requests are billed once for up to 10 files, so confirm format support before paying. Payment uses a crypto wallet (USDC on Base) or card details through Stripe. Uploaded files and URLs are sent to a third-party service; review its privacy policy. Feature requests are logged.

Installation

In SourceWeft

  1. Open Caliper in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/fit.caliper%2Fcaliper/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "caliper": {
      "type": "http",
      "url": "https://caliper.fit/mcp/"
    }
  }
}

Tools

10

format_detect

Detect File Format

Detect the geometry file format from a filename or URL. Returns the detected format name and whether it is currently supported. Use this to check format support before making a paid analysis call. No payment required. Privacy policy: https://caliper.fit/privacy

Parametersfilenamerequired

feature_request

Request a Feature

Request a feature or format that Caliper doesn't support yet. Free, no payment required. Use this when you need a capability that Caliper doesn't currently offer — especially unsupported file formats (STEP, IGES) or analysis features not yet available. Requests are logged and used to prioritize development. Privacy policy: https://caliper.fit/privacy

Parametersdescriptionrequired

format_auto

Auto-Detect and Analyze

Auto-detect geometry file format and extract metadata statistics. Accepts a 3D geometry file via URL or base64 and returns structured metadata: bounding boxes, triangle counts, manifold analysis, point cloud statistics, and more. This is a read-only analysis tool — it does not perform mesh repair, format conversion, or boolean operations. Supported formats: STL, OBJ, PLY, PCD, LAS/LAZ, glTF/GLB. STEP and IGES support is planned. Provide either file_url (preferred for large files) or file_b64 (for files under 200KB). Include filename for format detection if using file_b64. When using file_url, the format is detected from the URL path extension; filename is not required. Files under 150KB are free. Larger files cost $0.02/MB via x402 (USDC on Base) or card via MPP (Stripe; adds $0.35 surcharge). If payment is required, the response includes payment details. Retry with the payment argument containing the payment proof. Privacy policy: https://caliper.fit/privacy

Parameterspaymentfile_b64file_urlfilename

format_stl

STL Analysis

Extract metadata from an STL file (ASCII or binary). Returns triangle count, bounding box, surface area, volume, manifold analysis (watertight, open edges, non-manifold edges), triangle quality metrics, vertex deduplication count, mean edge length, minimum bounding sphere, and a noise estimate derived from planar region fitting. Payment via x402 (USDC on Base) or card via MPP (Stripe). See format_auto for payment flow details. Privacy policy: https://caliper.fit/privacy

Parameterspaymentfile_b64file_urlfilename

format_obj

OBJ Analysis

Extract metadata from an OBJ file. Returns vertex/normal/texcoord/face counts, triangle/quad/polygon breakdown, material and group counts, bounding box, surface area, and triangulation status. Payment via x402 (USDC on Base) or card via MPP (Stripe). See format_auto for payment flow details. Privacy policy: https://caliper.fit/privacy

Parameterspaymentfile_b64file_urlfilename

format_ply

PLY Analysis

Extract metadata from a PLY file (ASCII or binary). Returns vertex/face counts, element properties, feature detection (normals, colors, texcoords, intensity, curvature), bounding box, centroid, and point cloud identification. Payment via x402 (USDC on Base) or card via MPP (Stripe). See format_auto for payment flow details. Privacy policy: https://caliper.fit/privacy

Parameterspaymentfile_b64file_urlfilename

format_pcd

PCD Analysis

Extract metadata from a PCD point cloud file. Returns point count, field definitions, data format, organization, viewpoint, feature flags (RGB, intensity, normals, curvature), bounding box, centroid, and point density estimate. Payment via x402 (USDC on Base) or card via MPP (Stripe). See format_auto for payment flow details. Privacy policy: https://caliper.fit/privacy

Parameterspaymentfile_b64file_urlfilename

format_las

LAS/LAZ Analysis

Extract metadata from a LAS or LAZ point cloud file. Returns LAS version, point format, point count, scale factors, offsets, bounding box, classification counts, feature flags (RGB, intensity, GPS time, waveform), and VLR information. Payment via x402 (USDC on Base) or card via MPP (Stripe). See format_auto for payment flow details. Privacy policy: https://caliper.fit/privacy

Parameterspaymentfile_b64file_urlfilename

format_gltf

glTF/GLB Analysis

Extract metadata from a glTF or GLB file. Returns asset info, scene graph structure, mesh/material/texture counts, vertex and index totals, feature flags (normals, tangents, texcoords, colors, joints), primitive modes, and extensions. Payment via x402 (USDC on Base) or card via MPP (Stripe). See format_auto for payment flow details. Privacy policy: https://caliper.fit/privacy

Parameterspaymentfile_b64file_urlfilename

format_batch

Batch Analysis

Analyze multiple geometry files in a single batch request. Submit up to 10 files, receive a single quote, pay once, and get structured metadata for all files. Supports mixed formats. Read-only analysis — does not modify, convert, or repair files. Payment is required via x402 (USDC on Base) or card via MPP (Stripe). If no payment is provided, the response includes the total price and per-file breakdown. Retry with the payment argument containing "transaction", "network", and "priceToken". Partial success: if some files fail processing, you still receive results for the files that succeeded. Privacy policy: https://caliper.fit/privacy

Parametersfilesrequiredpayment

Version history

1
  1. v0.1.1LatestSep 16, 2026

Score

72% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts

    Publish an icon in the registry entry.

  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.