Instructions for working with an Obsidian vault, a folder of linked notes, through the Kioku MCP server. It covers searching, writing, engineering specifications, task workflows, sessions, and which tool groups are enabled.

Use it when an agent needs to read, search, organize, coordinate work in, or write to an Obsidian vault on disk.

It explains how to discover the tools that are actually available and how to make guarded changes without relying on outdated assumptions.

How sandovaldavid/kioku configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to sandovaldavid/kioku. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/sandovaldavid/kioku/main/.agents/skills/kioku-vault/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/sandovaldavid/kioku

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/sandovaldavid/kioku/kioku-vault/github.svg)](https://agentmods.dev/skills/sandovaldavid/kioku/kioku-vault)

Your own site

<a href="https://agentmods.dev/skills/sandovaldavid/kioku/kioku-vault"><img src="https://agentmods.dev/badge/skills/sandovaldavid/kioku/kioku-vault/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/sandovaldavid/kioku/kioku-vault"><img src="https://agentmods.dev/badge/skills/sandovaldavid/kioku/kioku-vault.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,231 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00058	$0.02231
Opus 5.5	$0.00023	$0.00892
Sonnet 5.5	$0.00012	$0.00446
Haiku 4.5	$0.00006	$0.00223

Measured 2mo ago against content hash 37341a23e525, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

kioku-vault 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 2mo 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.

.agents/skills/kioku-vault/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Kioku vault skill

Kioku reads, searches, and writes an Obsidian vault directly on disk. It works with Obsidian closed. The optional bridge matters only for Obsidian UI actions and plugin integrations.

Treat live MCP discovery as the runtime contract. For exact parameters, inspect the tool description or docs/commands-reference.md; do not infer schemas from examples or from the installed SDK version.

Discover the active contract first

Use MCP tools/list, prompts/resources discovery, or get_server_capabilities instead of assuming every optional group is exposed.
The generated develop contract contains 45 default tools and 78 tools with every capability group enabled.
Enabled by default: tasks, organization, sessions, workflows, graph, and engineering.
Disabled by default: research, generation, css, assets, bridge, plugin, and coordination.
An absent capabilities block preserves those defaults; it does not enable every optional group.
With capabilities.require_explicit: true, only explicitly enabled optional groups are registered.
A capability mismatch is normally configuration or connection scope, not evidence that note content is corrupt.

Tool groups

Query: find_similar_notes, get_links, list_notes, read_note, search_notes.
Focused note creation: create_regular_note, create_zettel, create_literature_note, create_moc, create_folder_readme.
Mutation: delete_note, edit_note, manage_trash, move_note, update_frontmatter.
Tasks: list_tasks, set_task_state.
Organization: audit_vault, find_duplicate_notes, manage_tags, process_inbox, suggest_folder, suggest_tags.
Sessions: end_work_session, get_work_context, list_work_sessions, start_work_session.
Engineering: add_backlog_item, create_engineering_spec, create_implementation_plan, get_project_context, list_projects, record_adr, record_bug, save_project_knowledge, setup_agent_workflow.
Templates and graph: manage_templates, get_concept_map, get_vault_snapshot, suggest_links.
Coordination: work items, transitions, claims, leases, history, handoffs, blockers, stale work, failed attempts, and conflicts.
Optional integrations: research, local generation, CSS, assets, plugin bridge, and Obsidian UI tools.
Utilities: get_server_capabilities, get_server_status, rebuild_index.

Read the full file on GitHub · 144 lines

Changes

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.

2mo ago First seen · 144 lines · 58 tokens per session scan A 37341a23e525

Subscribe to this mod's changes

kioku-vault is a skill published in the GitHub repository sandovaldavid/kioku (0 stars, last pushed 5d ago), licensed MIT. It adds 58 tokens to every session and 2,231 once invoked, about $0.0002 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 2026-08-31.

Memory and context TypeScript ai dotnet mcp model-context-protocol obsidian

kioku-vault next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
kioku-vaultsandovaldavid/kioku	Skill	0	5d ago	MIT	A	58	Claude Code, Codex
mnemosy-memory28naem-del/mnemosyne	Skill	157	3d ago	MIT	A	81	Claude Code, Codex
pkm-exploreAdrianV101/obsidian-pkm-plugin	Skill	15	2d ago	MIT	A	55	Claude Code
owd-obsidian-mindmsinclair25/mdevolved	Skill	2	11d ago	Apache-2.0	A	100	Codex
wiki-lintAr9av/obsidian-wiki	Skill	3.7k	yesterday	MIT	A	47	Claude Code
wiki-statusAr9av/obsidian-wiki	Skill	3.7k	yesterday	MIT	A	50	Claude Code
hermes-history-ingestAr9av/obsidian-wiki	Skill	3.7k	yesterday	MIT	A	45	Claude Code

kioku: Skill for Claude Code