Obsidian

Obsidian is a Markdown-based knowledge management application that serves as the human-facing reader in the LLM Wiki pattern. While the LLM agent writes and maintains the wiki's pages, Obsidian is the interface through which a human navigates and reads the compiled knowledge base.

Within the LLM Wiki stack, Obsidian provides several capabilities that make the pattern work smoothly:

• wikilinks — Obsidian's native link syntax is used by the LLM to create cross-references between pages. Forward links are written by the LLM; backlinks and the graph are computed from them automatically, keeping the structure consistent.
• Backlinks — Obsidian automatically surfaces all pages that link to a given page, making it easy to discover related content without manual curation.
• Graph view — A visual representation of the wiki's link structure. Because every cross-reference is written by the LLM, the graph reliably shows which pages are hubs (heavily linked) and which are orphans (isolated, with no inbound links). Andrej Karpathy's mental model describes Obsidian as "the IDE" in the analogy: *"Obsidian is the IDE, the LLM is the programmer, and the wiki is the codebase."*
• Web Clipper — Obsidian's Web Clipper tool converts web articles into Markdown files, which can then be added to the raw-sources layer of the LLM Wiki for the agent to ingest.

Obsidian is part of a common but deliberately tool-agnostic stack described in the LLM Wiki pattern:

The entire wiki, including Obsidian's vault, is at heart a git repo of Markdown files, granting version history, branching, and collaboration for free. llm-wiki.en.md

Obsidian is a single-player tool by default — there is no built-in multi-user access control, approval workflow, or concurrent editing when used as the reader for a self-hosted LLM Wiki. Managed services such as Cairni are positioned to address these gaps while retaining the same compiled-wiki model. llm-wiki.en.md