Stewie

Stewie is a tool designed to create a living behavior specification from a team's codebase and product documentation. It addresses the challenge of scattered, inconsistent, and outdated product knowledge by consolidating product intent, such as user stories, decisions, and code, into a unified, continuously updated behavior spec. This approach aims to ensure that teams have a shared and trustworthy understanding of how their product works, reducing the need for repeated explanations and minimizing onboarding friction for new hires or collaborators.

The platform operates by allowing users to upload product documents or connect a repository in read-only mode. Stewie analyzes these sources to extract behaviors and business rules, generating a plain-language product map that highlights key modules, behaviors, and areas requiring further clarification. Team members can then review, confirm, reject, or flag these findings, ensuring that only validated information becomes part of the official behavior spec. Every confirmed behavior is linked back to supporting code, providing traceability and transparency. md specification. This format ensures that teams retain control over their documentation, with no lock-in to the Stewie platform.

Stewie offers a reference command-line interface (CLI) for validating, listing, and analyzing specs, alongside a browser-based viewer that renders the structured PBC blocks into interactive diagrams and panels. The tool emphasizes security and privacy, operating with read-only repository access, manual analysis initiation, and a commitment not to use customer code for model training. Artifacts generated by Stewie are limited to structure maps and summaries, with full data deletion available upon request. Stewie's proprietary features include its product map generation, trust workflow, and specification synthesis, all built atop the open PBC format, which is actively developed and publicly available.

Stewie is intended for teams that require precise, up-to-date product knowledge, including product owners, engineers, and founders. Its design supports environments where maintaining alignment between code, documentation, and product decisions is critical, especially when onboarding new team members or collaborating with external partners.