What we're building, and practical thoughts on drawing reviews.
The jobs around a drawing review — merging a set, cropping a detail, checking sheet numbers before issue — usually mean handing a file to whichever website comes up first. We have published 45 tools that do those jobs in your own browser instead. Free, no account, and the file never leaves your machine.
Xenmark now has an official read-only Integration API, paired with a token you create inside the app and documented on Postman and GitHub. On top of it we built an open-source MCP server, so an AI assistant can tell you what is new, what is still open on a revision, and who replied to what — with links into Xenmark.
A weekend feature update adds four measurement tools, page scale and unit settings, manual overrides for known dimensions, and five quick markup symbols. Measurements and symbols carry through to the Comment Plan PDF, the project archive, and a dedicated sheet in the Excel export.
Storing and repeatedly serving PDFs is the core infrastructure cost of a drawing review service. Xenmark keeps active project files on Cloudflare R2 with no egress charges and selected backups on Backblaze B2. Low storage costs give us room to keep the free plan useful and to revisit its limits.
Drawing reviews are often harder to manage than they need to be. Comments arrive through different channels, feedback is unclear, drawing versions go stale, and review history ends up scattered across emails, PDFs, and folders.