What does Xem Studio sell?

Measured 3D geometry of real objects: a free dimension sheet, a cleaned mesh ($4–8) and a STEP solid ($9–19), each with a tolerance measured on a printed test part. Hardware and standard parts are free STEP/STL generated from the standards.

Is there an MCP server or API?

Yes. Remote MCP server (Streamable HTTP, no auth) at https://xemstudio.com/mcp with tools find_geometry, get_geometry, get_free_files and list_categories; local stdio via npx -y @xemstudio/mcp. HTTP API at https://xemstudio.com/api/geometry (OpenAPI at https://xemstudio.com/api/openapi.json). Paid files will use x402 micropayments.

Will the free hardware files print correctly?

Yes: dimensions come from the published standards, threads are plain cylinders at major diameter, and tri-clamp faces follow ISO 2852:1974. Print the plastic, check the fit, then buy the metal.

Library › About ·

Measured, rebuilt, printed to prove it.

Xem Studio publishes the exact exterior geometry of real objects so covers, mounts, docks and adapters fit the first time. For people, and for the AI agents people now ask to design them.

How it's made

Standards and hardware. Fasteners, inserts, magnets, pipe, tri-clamp fittings: generated in CadQuery from the published standard (ISO, DIN, ASME, ISO 2852). STEP + STL, free, CC BY 4.0. Threads are plain cylinders at major diameter so the files print.
Modern devices with public CAD. The manufacturer's own files, linked under their license, plus a free sheet so an assistant can answer without opening a PDF. Never rehosted or resold.
Everything else. Structured-light scan → clean solid with named datums → test ring printed from the file and measured on the real object. The tolerance published is what that print measured.

There's an MCP for this

An assistant asked for a cover or a mount needs the real object's dimensions, not a guess from photos. The library is written for that reader.

HTTP API, live. Sheet, every public file with its license, and file offers in one JSON. Filter by kind, category, group, year. openapi.json
MCP server, live. Remote, no install, no auth: add https://xemstudio.com/mcp as a remote MCP server (Streamable HTTP). Or local stdio: npx -y @xemstudio/mcp. Tools: find_geometry, get_geometry, get_free_files, list_categories.
Markdown. Every object page has index.md next to it, and is served as Markdown to any client sending Accept: text/markdown. The whole library in one file: /llms-full.txt.
Plain text for crawlers. /llms.txt lists every sheet; schema.org Dataset on every object page.
Pay per file, no account. Paid files will answer 402 with x402 payment details. Same prices for agents and people.

POST /mcp            tools/call find_geometry {"query":"tri clamp ferrule"}
→ 200  JSON-RPC · summaries · then get_geometry / get_free_files

GET /api/geometry?object=echo-dot-5
→ 200  sheet · sources + licenses · offers · faq · related

GET /api/geometry?q=ferrule&group=Tri-clamp
→ 200  search by name, alias, tag, category

GET /api/geometry/echo-dot-5.step
→ 402  x402 · USDC · price in header  (planned)

FAQ

What is sold?

Measured geometry of real objects: free dimension sheet, cleaned mesh ($4–8), STEP solid ($9–19). Every Xem file states a tolerance measured on a printed test part.

How accurate?

Structured-light scan, rebuilt in CAD, checked with calipers and a printed ring. Modern devices to about ±0.15 mm on mating surfaces. Vintage objects publish as design geometry, where form matters more than the last tenth.

Is selling scans of commercial products legal?

The files describe external shape so other things can fit it, which is how the aftermarket-accessory industry works; functional shape isn't copyrightable. Logos and badges are never included, files are never presented as the manufacturer's CAD, and other publishers' files are linked under their own licenses, never rehosted.

Will the free hardware files actually print?

That's the point. Dimensions come from the standard, threads are modeled as plain cylinders, and the tri-clamp faces follow ISO 2852:1974 (2.85 mm rim, 1.6 mm recess, 20° back cone). Print the plastic, check the fit, then buy the metal.

Can you scan something for me?

Yes. Ask in the Discord with a photo and what needs to fit it. Requests set the order.

Who

Xem Studio is part of Long Earth Society, Mesa, Arizona, the same shop that builds Stirling engines out of tri-clamp spools. The hardware shelf exists because I needed it.