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Prototyping.io

Prototyping.io is a YC Spring 2026 (P26) company.

About Prototyping.io

GPAgent's own fund-neutral profile, written from public information. Updated Oct 4, 2026.

Summary

Prototyping.io automates the path from CAD file to finished mechanical parts, covering CNC machining, sheet metal, 3D printing, injection molding, and die casting on a single platform. An AI agent extracts design intent from uploaded 3D models, runs manufacturability analysis, and drives production workflows, replacing the manual quoting, sourcing, and process planning that engineers handle today when ordering precision parts.

Business model

Per-order pricing through quote requests tied to each manufacturing job.

Go-to-market

Hardware engineers and product teams upload CAD models directly on the platform to request parts, making it a self-serve entry point with no minimum order quantity.

From the Y Combinator listing

How Prototyping.io describes itself in Y Combinator's public directory.

Autonomous manufacturing for mechanical parts

Facts

Score every batch against your own thesis

GPAgent's sourcing agent reads every company in a batch, scores each one against your fund's thesis in a private workspace, and lines up the founders worth meeting before Demo Day. You decide who to contact. Your scores, notes, and pipeline never appear on these pages.

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