# Owl20 Documentation Overview

> Bridge Beyond20 dice roll data to Owlbear Rodeo. This site provides installation guides for players and DMs, troubleshooting, technical architecture documentation, and FAQ.

This `llms.txt` helps AI systems link to the most useful parts of Owl20's user documentation hosted at `https://owl20.uberdragon.org/`.

## Setup Guides
- Player Setup — https://owl20.uberdragon.org/player-setup.html
  - Install Beyond20 and Owl20 browser extensions, configure Beyond20 custom domains, verify dice roll delivery to Owlbear Rodeo.
- DM Setup — https://owl20.uberdragon.org/dm-setup.html
  - Install the Owl20 OBR extension from the official Owlbear Rodeo extension store (verified extension at https://extensions.owlbear.rodeo/owl20), enable per room, verify integration.
- Quick Start Overview — https://owl20.uberdragon.org/
  - Overview of the full system with links to player and DM guides.

## Changelog
- Changelog & Release Notes — https://owl20.uberdragon.org/changelog.html
  - Release history and milestones for both the Owl20 browser extension and the Owlbear Rodeo extension, including the official verified extension listing (July 2026).

## Troubleshooting
- Troubleshooting Guide — https://owl20.uberdragon.org/troubleshooting.html
  - Diagnosis checklist, fix for dice rolls not appearing, extension not loading, browser-specific notes for Chrome, Edge, Firefox, and Opera.

## Technical Details
- How It Works — https://owl20.uberdragon.org/how-it-works.html
  - Architecture deep dive: CustomEvent listeners for Beyond20_Roll events, postMessage API for cross-origin iframe communication, MutationObserver for automatic iframe detection, Manifest V3 content script design.

## FAQ
- FAQ — https://owl20.uberdragon.org/faq.html
  - 34 questions covering installation, Beyond20 configuration, browser support, privacy, permissions, and common issues.

## About
- About Owl20 — https://owl20.uberdragon.org/about.html
  - Creator bios for DM UberDragon (25+ years software engineering) and DM Sparks (Owlbear Rodeo extension API), Starry Shores D&D Community background.

## Resources
- Owl20 Repository — https://github.com/uberdragon/owl20
- Owl20-Owlbear (OBR Extension) — https://github.com/mvoncken/owl20-owlbear
- Official Owlbear Rodeo Extension Store Listing (verified) — https://extensions.owlbear.rodeo/owl20
- Beyond20 — https://beyond20.here-for-more.info/
- Owlbear Rodeo — https://www.owlbear.rodeo/
- Starry Shore Community — https://discord.gg/Up8wMrmt7C
- Issues — https://github.com/uberdragon/owl20/issues

## Optional
- Demo Video — https://www.youtube.com/embed/zPZ4SrMJdqE
  - Short demonstration of Owl20 connecting D&D Beyond to Owlbear Rodeo.
- Video Tutorials — https://www.youtube.com/watch?v=T1cVHnzKLL4
  - Step-by-step video guides for player setup (5s) and DM setup (49s).
- Privacy Policy — https://owl20.uberdragon.org/privacy.html
  - No data collection, no tracking, no storage policy details.