obsidian-wiki is a framework that helps AI agents build and maintain an interconnected knowledge base from text-based material in an Obsidian vault. It is for people who want their agents to remember discoveries, connect related information, and answer questions with wiki-link citations. Catalogue add-ons provide the agent skills, instructions, agents, and configuration used to create and maintain these wikis.
Borrowing it
Nothing to install: this file belongs to Ar9av/obsidian-wiki. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Ar9av/obsidian-wiki/main/AGENTS.mdgit clone --depth 1 https://github.com/Ar9av/obsidian-wikiWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/ar9av/obsidian-wiki/agents-md)<a href="https://agentmods.dev/instructions/ar9av/obsidian-wiki/agents-md"><img src="https://agentmods.dev/badge/instructions/ar9av/obsidian-wiki/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/ar9av/obsidian-wiki/agents-md"><img src="https://agentmods.dev/badge/instructions/ar9av/obsidian-wiki/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.04219 | $0.04219 |
| Opus 5.5 | $0.01688 | $0.01688 |
| Sonnet 5.5 | $0.00844 | $0.00844 |
| Haiku 4.5 | $0.00422 | $0.00422 |
Grade B, and why
obsidian-wiki AGENTS.md scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
- `session-brain` / `session-search` **retrieve** — build a topic graph over the raw sessions and find or load one. They write a sidecar at `~/.claude/session-brain/` and never touch the vault. How it starts
The opening of the file, as written. The whole thing — 183 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Obsidian Wiki — Agent Context
A skill-based framework for building and maintaining an Obsidian knowledge base. No scripts or dependencies — everything is markdown instructions that you execute directly.
README Translation Parity
README.md and every README_<LANG>.md translation (today README_TW.md) are one documentation surface. Keep headings, examples, links, and user-facing behavior aligned across them. The check is advisory and never blocks a PR: the readme-translation-drift CI job only reports drift. Run python tools/check_readme_sync.py to list, per translation, the commits that changed README.md without a later update to that translation, along with the pending English diff — then translate and backfill those changes. Reviewers assess translation quality. Adding a language is covered in docs/contributing.md.
Configuration
Resolve config using the Config Resolution Protocol in llm-wiki/SKILL.md:
- Inline vault override (
@name) — if the request contains an@<name>token, resolve<global config dir>/config.<name>directly, overriding the steps below. See "Targeting a specific vault" right after this list. - Walk up from CWD — look for a
.envfile in the current directory, then each parent, up to$HOME. Stop at the first.envthat containsOBSIDIAN_VAULT_PATH. If its value is empty, stop there too: tell the user which.envblocked resolution (a blank line copied from.env.exampledoes this) instead of falling through to the global config. - Global config — if no local
.envis found, read<global config dir>/config. - Prompt setup — if neither exists, tell the user to run
wiki-setup.
The global config dir is XDG-style: $XDG_CONFIG_HOME/obsidian-wiki (default ~/.config/obsidian-wiki). Installs that already have a ~/.obsidian-wiki directory keep using it, so existing setups never break; new installs use the XDG path.
The resolved config sets OBSIDIAN_VAULT_PATH (where the wiki lives). It may also set OBSIDIAN_WIKI_REPO (where this repo is cloned) and other optional variables.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- today Changed · +1 lines · +31 tokens per session c6274a2c901c
- 8d ago Changed · +2 lines · +83 tokens per session bed587ada2a7
- 18d ago Changed · +71 tokens per session f48b510ed07c
- 28d ago Changed · +3 lines · +158 tokens per session 17b9badd1ca0
- 1mo ago First seen · 177 lines · 3,876 tokens per session scan B e727ac61fd49
obsidian-wiki AGENTS.md is an instructions file published in the GitHub repository Ar9av/obsidian-wiki (3,601 stars, last pushed yesterday), licensed MIT. It adds 4,219 tokens to every session, about $0.0169 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
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