# BC Observatory

> An agent-first, cross-referenced knowledge base of Microsoft Dynamics 365 Business Central: official docs, source code,
> guidelines, videos and community blogs. Pages without model text are badged derived (facts placed by code); pages with
> model text are badged unreviewed until Opus reviews them. Every page is markdown with strict frontmatter and cites its evidence.

Last nightly: 2026-10-14 (partial).

## Sections

- [Topics](https://waldo1001.github.io/waldo.BCObservatory/topics/llms.txt): 606 topic hubs seeded from the Microsoft Learn TOCs, linking out to Learn
- [AL objects](https://waldo1001.github.io/waldo.BCObservatory/objects/llms.txt): 25646 W1 and first-party app objects from the code (fields, procedures, events, obsolete state, versions, countries, Learn pages)
- [First-party apps](https://waldo1001.github.io/waldo.BCObservatory/apps/llms.txt): 96 Microsoft first-party apps (BCApps src/Apps/W1): objects by type, the Learn hubs that document them, videos and posts naming their objects
- [Localizations](https://waldo1001.github.io/waldo.BCObservatory/localizations/llms.txt): 22 country layers and what they change in W1
- [Roadmap](https://waldo1001.github.io/waldo.BCObservatory/features/llms.txt): 80 Business Central features from the Microsoft 365 roadmap (status, wave, dates)
- [Code changes](https://waldo1001.github.io/waldo.BCObservatory/changes/llms.txt): 1083 merged pull requests of microsoft/BCApps that touch AL source, joined to the AL object pages they changed (D61)
- [AL extension releases](https://waldo1001.github.io/waldo.BCObservatory/releases/llms.txt): 63 AL Language extension versions from the marketplace changelog (dates, entries, issues)
- [Videos](https://waldo1001.github.io/waldo.BCObservatory/videos/llms.txt): 616 Business Central videos as timestamped evidence (summary, chapters, features with verified status quotes)
- [Posts](https://waldo1001.github.io/waldo.BCObservatory/posts/llms.txt): 601 Business Central blog posts as derived evidence (summary, key points, short quotes, link to the original)
- [Weekly digests](https://waldo1001.github.io/waldo.BCObservatory/digests/llms.txt): what changed each week (roadmap, videos, posts, Learn commits, code, deprecation radar); RSS at https://waldo1001.github.io/waldo.BCObservatory/rss.xml
- [Sources](https://waldo1001.github.io/waldo.BCObservatory/sources/llms.txt): 33 blogs and channels with their footprint (systems, topics, objects named, flight path)

Related pages: data/links/related.json (in the repository) lists up to 8 per topic hub, AL object, app, video, post and feature, each with a
reason from a closed set (same title, different Learn section; set-up guide for this feature; both documented in <hub>; same Learn section;
shares <n> videos/posts; same app; implements <hub>; the full list is its `why` array). Derived from structure, nothing machine-written.

## Start here

- [About](https://waldo1001.github.io/waldo.BCObservatory/about.md): who made this, why, how the nightly runs, who it is for, and how to connect an agent
- [MCP](https://waldo1001.github.io/waldo.BCObservatory/mcp.md): the bc-observatory MCP server and the Claude Code plugin: the tools, what to ask, how to install
- [AGENTS.md](https://github.com/waldo1001/waldo.BCObservatory/blob/main/AGENTS.md): how to use and cite this knowledge base
- [Plan](https://github.com/waldo1001/waldo.BCObservatory/blob/main/docs/PLAN.md): architecture and milestones
- [Sources](https://github.com/waldo1001/waldo.BCObservatory/blob/main/sources.yaml): every source with its trust tier