claude-obsidian is a local knowledge system that turns source material into linked, source-cited Markdown notes in an Obsidian vault for use with Claude Code and compatible agent hosts. People use it to capture research, retrieve evidence-grounded answers, maintain knowledge, and map connections while retaining ownership of their files. The catalogue entries provide workflows and extensions for operating this knowledge system.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add AgriciDaniel/claude-obsidian --skill wiki-foldgit clone --depth 1 https://github.com/AgriciDaniel/claude-obsidianWrote 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/skills/agricidaniel/claude-obsidian/wiki-fold)<a href="https://agentmods.dev/skills/agricidaniel/claude-obsidian/wiki-fold"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-obsidian/wiki-fold/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/skills/agricidaniel/claude-obsidian/wiki-fold"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-obsidian/wiki-fold.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00076 | $0.01064 |
| Opus 5.5 | $0.00030 | $0.00426 |
| Sonnet 5.5 | $0.00015 | $0.00213 |
| Haiku 4.5 | $0.00008 | $0.00106 |
Grade A, and why
wiki-fold scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Extractive log fold
Create an additive rollup of raw wiki/log.md entries. Never modify, move, or
delete child entries or their pages. Do not perform fold-of-folds or trigger a
fold automatically.
Resolve the portable core from this skill's installation. Resolve the user vault
by explicit --vault, CLAUDE_OBSIDIAN_VAULT, workspace config, then
current-directory discovery. Never treat the plugin/product root as a vault.
PRODUCT_ROOT=/absolute/path/to/installed/claude-obsidian
CORE="$PRODUCT_ROOT/scripts/claude-obsidian.py"
test -f "$CORE"
Every ../wiki/references/ link in this file resolves the same way, relative
to this skill's own directory under $PRODUCT_ROOT, never relative to the
selected vault's wiki/ directory.
This skill needs no network egress. Do not call external services.
Select a bounded range
Use batch exponent k with size 2^k; default to k=4. An explicit entry range
may override it. If fewer entries exist than requested, report the shortfall and
stop rather than folding a partial batch.
Read the selected log entries completely. Read referenced child pages only when
the log lacks enough context: target 0-10 reads, hard ceiling 15. Missing pages
remain explicit page_missing records.
Derive the structural ID only from inputs:
fold-k{K}-from-{EARLIEST-DATE}-to-{LATEST-DATE}-n{COUNT}
If wiki/folds/{FOLD_ID}.md already exists, return a no-op. Replacing it requires
an explicit force request and a separately reviewed replace proposal.
Draft extractively
Follow fold-template.md. Every child log entry must
have one deterministic child_key in frontmatter and exactly one matching row
in the Child Entries table. Do not deduplicate children by page, although the
final Child Pages link list may be deduplicated.
Every outcome must name its source entry. Every number must be verifiable in the
selected entry. A cross-entry theme must name at least two contributing entries.
Prefer ambiguous in source or source missing to invention. When a child page
and log entry disagree, preserve both and identify the mismatch; the log entry is
the fold's primary source.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago Changed · +4 lines df61e257eaae
- 1mo ago First seen · 108 lines · 76 tokens per session scan A a887e48737ea
wiki-fold is a skill published in the GitHub repository AgriciDaniel/claude-obsidian (15,791 stars, last pushed 2d ago), licensed MIT. It adds 76 tokens to every session and 1,064 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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