MPC Autofill is an open-source tool that helps tabletop gaming enthusiasts create professional-quality playtest cards for printing through MakePlayingCards.com. Designed for kitchen-table gaming, it streamlines the process from choosing card images to placing an order. The service includes community-driven card image databases, where users can browse recent additions and select renders or artwork contributed by other creators. A project editor lets users fine-tune their card projects before printing.

MPC Autofill also offers a desktop tool that downloads the images needed for an order and automates submission to MakePlayingCards.com. The printer then produces and mails the cards directly to the customer. The software is licensed under GPL-3, and its features are intended to remain free. The project provides a wiki for guidance and invites users to support its development through donations. Created by chilli_axe, MPC Autofill combines community-shared creative resources with a practical ordering workflow, making custom playtest cards more accessible to tabletop game designers and players.