Caliper
Let your coding agent read bounding boxes, vertex counts, and format metadata from 3D assets without opening a desktop CAD app.
Overview
Caliper is a Build-phase MCP server that extracts geometry and CAD file metadata from STL, OBJ, PLY, PCD, LAS/LAZ, and glTF/GLB for coding agents.
What is this MCP server?
- Extracts metadata from STL, OBJ, PLY, PCD, LAS/LAZ, and glTF/GLB in one remote MCP endpoint
- Streamable HTTP transport at caliper.fit—no local geometry toolchain required
- Supports mesh and point-cloud workflows common in robotics, games, and additive manufacturing
- Agent-callable inspection before committing heavy assets to repos or CDNs
- Version 0.1.1 Fit-hosted server with published MCP schema
- 6 supported formats: STL, OBJ, PLY, PCD, LAS/LAZ, glTF/GLB
- Remote endpoint: https://caliper.fit/mcp/ (streamable-http)
- Server version 0.1.1 per published MCP schema
What problem does it solve?
Agents and scripts cannot reliably summarize 3D files without brittle one-off parsers or heavyweight desktop tools.
Who is it for?
Indie game, robotics, or 3D-printing builders who want agent-driven asset QA over standard mesh and point-cloud formats.
Skip if: Teams that need parametric CAD editing, STEP assemblies, or simulation-grade mesh healing inside the agent.
What do I get? / Deliverables
After you add the Caliper remote URL, your agent can answer asset questions from real files during reviews, imports, and pipeline checks.
- Structured metadata summaries for supported 3D and point-cloud files
- Agent-grounded answers during asset review without manual parsing scripts
- Repeatable geometry checks across STL through glTF/GLB workflows
Recommended MCP Servers
Journey fit
Geometry inspection sits in Build because solo builders wire agents into asset pipelines, viewers, and print-prep tools during implementation. Integrations is the canonical shelf for remote MCP servers that attach file-format capabilities to Claude Code, Cursor, or Codex.
How it compares
Remote geometry-metadata MCP, not a mesh editor or a generic filesystem skill.
Common Questions / FAQ
Who is Caliper for?
Solo and small-team builders using Claude Code, Cursor, or similar agents on 3D asset pipelines who need fast metadata without local CAD installs.
When should I use Caliper?
Use it during Build when ingesting uploads, auditing repo assets, or documenting format limits before shipping a viewer or manufacturing workflow.
How do I add Caliper to my agent?
Register the streamable-http remote MCP URL https://caliper.fit/mcp/ in your client’s MCP config per Fit’s server schema, then invoke tools from the agent chat.