c-obsidian

c-obsidian is a skill for Claude Code, Codex from daxaur/openpaw. It costs 29 tokens per session (709 once invoked), scanned C, original, MIT.

An Obsidian vault manager for keeping persistent notes and session records. Obsidian is a note-taking app that stores connected notes in a folder called a vault.

In plain words
What is it for?
It supports searching notes, creating and editing daily notes, appending session logs, listing folders and tags, opening notes, and listing available vaults.
Why use it?
It helps an agent search existing notes before creating duplicates and preserve useful project or session information between conversations.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths.

Good fit It supports searching notes, creating and editing daily notes, appending session logs, listing folders and tags, opening notes, and listing available vaults.

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Install with agentmods
npx agentmods add skills/daxaur/openpaw/c-obsidian
Install

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.

Any agent
npx skills add daxaur/openpaw --skill c-obsidian
Clone the repo
git clone --depth 1 https://github.com/daxaur/openpaw

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.

agentmods badge for c-obsidian

README.md
[![agentmods](https://agentmods.dev/badge/skills/daxaur/openpaw/c-obsidian.svg)](https://agentmods.dev/skills/daxaur/openpaw/c-obsidian)
Your own site
<a href="https://agentmods.dev/skills/daxaur/openpaw/c-obsidian"><img src="https://agentmods.dev/badge/skills/daxaur/openpaw/c-obsidian.svg" alt="Measured on agentmods" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 709 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00029 $0.00709
Opus 5 $0.00015 $0.00354
Sonnet 5 $0.00006 $0.00142
Haiku 4.5 $0.00003 $0.00071

Measured 8d ago against content hash 5c8f3887ead3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade C, and why

c-obsidian scanned grade C with 2 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 8d 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

obsidian-cli create "AI/Memory" --content "$(cat ~/.claude/memory/MEMORY.md)"

Enumerates other installed skillsmediumAgent snooping

Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.

If both c-memory and c-obsidian are installed (check `ls ~/.claude/skills/c-memory/`), keep them in sync automatically:
skills/c-obsidian/SKILL.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Obsidian — Knowledge Base & Memory

Manage your Obsidian vault as a persistent memory layer. Use it for daily notes, session logs, knowledge capture, and searching your second brain.

CLI Commands

# Search before creating (avoid duplicates)
obsidian-cli search "query"
obsidian-cli search --tag "project" --folder "Work"

# Create and edit
obsidian-cli create "Title" --content "Body"
obsidian-cli create "Title" --template "Daily Note"
obsidian-cli append "Note Title" "Additional content"

# Open, list, vault
obsidian-cli open "Note Title"
obsidian-cli list --folder "Projects"
obsidian-cli tags
obsidian-cli vault --list

Daily Notes Integration

When the user starts a session, check for today's daily note:

obsidian-cli search --folder "Daily Notes" "$(date +%Y-%m-%d)"

If none exists, create one:

obsidian-cli create "$(date +%Y-%m-%d)" --folder "Daily Notes" --content "# $(date +%Y-%m-%d)\n\n## Tasks\n\n## Notes\n\n## Session Log\n"

Append a session log entry at the end of each session:

obsidian-cli append "$(date +%Y-%m-%d)" "### Session $(date +%H:%M)\n- [summary of what was done]\n"

Memory Sync (Auto)

If both c-memory and c-obsidian are installed (check ls ~/.claude/skills/c-memory/), keep them in sync automatically:

Bidirectional Sync

  • ~/.claude/memory/ → Obsidian AI/ folder (on every memory write)
  • Obsidian AI/~/.claude/memory/ (on session start, if Obsidian has newer content)

Sync Commands

# Push memory to Obsidian
obsidian-cli create "AI/Memory" --content "$(cat ~/.claude/memory/MEMORY.md)"
obsidian-cli create "AI/People" --content "$(cat ~/.claude/memory/people.md)"

# Pull from Obsidian to check for updates
obsidian-cli search --folder "AI" "Memory"

# Append session log to daily note
obsidian-cli append "$(date +%Y-%m-%d)" "### Claude Session $(date +%H:%M)\n- [summary]"

Rules

  • When the user says "remember this", save to both systems
  • Obsidian is the long-term archive; ~/.claude/memory/ is the quick-access cache
  • MEMORY.md is authoritative for quick facts; Obsidian is richer context

Read the full file on GitHub · 83 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.

  1. 8d ago First seen · 83 lines · 29 tokens per session scan C 5c8f3887ead3

Subscribe to this mod's changes

c-obsidian is a skill published in the GitHub repository daxaur/openpaw (167 stars, last pushed 3mo ago), licensed MIT. It adds 29 tokens to every session and 709 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 2 findings (reads agent configuration directories, enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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