Arpelier

Arpelier is a process-flow workspace for semiconductor and nano devices, made for people and AI to work on together. Each step of a process flow (deposition, lithography, etch, implant, CMP and more) becomes a 3D structure you can inspect. This connector is the AI side of that workspace: Claude writes a process flow as Flow 1.0 JSON and checks it with the same engine the Arpelier web app uses, so it can measure the result instead of estimating it. With the connector, Claude can: - read Arpelier's documentation for writing flows: process kinds and fields, material IDs, mask polarity and example flows; - validate a flow with the web app's own parser, with each problem located in the JSON; - compute the structure up to any step and report material volumes and the surface height range; - take cross-sections with exact layer stacks (material, bottom and top in nm); - check whether two materials touch and how large the shared area is, or whether points are connected; - list the material information that a 3D export (GLB, 3MF, STL) would carry. All six tools are read-only. The connector does not open or change your Arpelier projects and needs no account or sign-in. It does not store the flows you send; to continue long or module-by-module calculations, it keeps only the computed structure (without names or notes) for up to one hour, then deletes it. Your projects live in the Arpelier web app (arpelier.com), where structures are viewed in 3D, shared and saved; an assistant that can use your browser can build a checked flow into an open project. Results are geometric, with lengths in nm: Arpelier is for understanding, teaching and exploring process-structure relationships, not a fabrication recipe, a TCAD simulation or an electrical sign-off. Each calculation can use about 160,000 lateral grid columns and 400 executed steps; one that needs more than about 3 minutes continues over several calls.