parsidion

parsidion is a skill for Claude Code from paulrobello/parsidion. It costs 242 tokens per session (3,450 once invoked), scanned B, original, MIT.

A knowledge-management skill for an Obsidian vault, which is a folder of linked Markdown notes. It searches existing notes first, then creates structured, linked notes with metadata when needed.

In plain words
What is it for?
Use it to check prior notes, investigate errors using saved knowledge, capture new information, maintain the vault, and work with ParsidionVault or its legacy ClaudeVault location.
Why use it?
It reduces duplicate notes and keeps stored knowledge organized, searchable, connected, and marked by confidence.

Skill for Claude Code

Written for Claude Code: SessionStart hook event. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions subagents.

Good fit Use it to check prior notes, investigate errors using saved knowledge, capture new information, maintain the vault, and work with ParsidionVault or its legacy ClaudeVault location.

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Install with agentmods
npx agentmods add skills/paulrobello/parsidion/parsidion
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 paulrobello/parsidion --skill parsidion
Clone the repo
git clone --depth 1 https://github.com/paulrobello/parsidion

Made for: Claude Code.

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 parsidion

README.md
[![agentmods](https://agentmods.dev/badge/skills/paulrobello/parsidion/parsidion/github.svg)](https://agentmods.dev/skills/paulrobello/parsidion/parsidion)
Your own site
<a href="https://agentmods.dev/skills/paulrobello/parsidion/parsidion"><img src="https://agentmods.dev/badge/skills/paulrobello/parsidion/parsidion/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.

agentmods 80×15 button for parsidion

Your own site · 80×15
<a href="https://agentmods.dev/skills/paulrobello/parsidion/parsidion"><img src="https://agentmods.dev/badge/skills/paulrobello/parsidion/parsidion.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 242 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,450 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00242 $0.03450
Opus 5.5 $0.00097 $0.01380
Sonnet 5.5 $0.00048 $0.00690
Haiku 4.5 $0.00024 $0.00345

Measured 2d ago against content hash 945389929afc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

parsidion 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 2d ago.

The scan reads SKILL.md. This mod also ships 48 executable files (scripts/agent_adapter.py, scripts/ai_backend.py, scripts/antigravity_session_end_hook.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Claude Code installs the full hook set below. Codex runtime hooks are session lifecycle only: native Codex `SessionStart` and `Stop` hooks registered in `~/.codex/hooks.json` when `hooks = true` is enabled in `~/.codex/c
skills/parsidion/SKILL.md · 293 lines

How it starts

The opening of the file, as written. The whole thing — 293 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Parsidion vault - Knowledge Management System

A richly organized Obsidian vault (default ~/ParsidionVault/, with legacy ~/ClaudeVault/ fallback) that replaces built-in auto memory with structured, searchable, cross-linked knowledge.

Philosophy

  • Search before create. Always search the vault before creating a new note. Duplicate knowledge fragments rot.
  • Atomic notes. One concept per note. If a note covers two distinct ideas, split it.
  • Frontmatter is mandatory. Every note must have a valid YAML frontmatter block. No exceptions.
  • Knowledge compounds. Individual notes gain value through links. An unlinked note is a dead note.
  • Confidence matters. Tag what you know vs. what you suspect. Update confidence as understanding deepens.

Vault-First Consultation

The vault is your first stop — not your last resort. Before web search, before documentation, before experimentation, check whether the vault already holds a solution.

Debugging: Search Before You Diagnose

When you encounter an error, exception, or unexpected behavior:

  1. Extract the key signal: the exception type, package name, or the most distinctive phrase from the error message
  2. Dispatch the vault-explorer agent with the signal as the query.
  3. Answer returned? Apply the documented solution; update the note if you learn something new about the problem. Read specific files from the Sources section only if you need more depth.
  4. "No relevant vault notes found"? Diagnose, solve, then save the solution so future sessions benefit.

Implementation: Check for Prior Art

When implementing any feature, pattern, or integration:

  1. Dispatch the vault-explorer agent with the feature keyword as the query.
  2. Answer returned? Reuse and adapt — a proven implementation beats a fresh one every time. Read specific files from the Sources section for details; check the sources frontmatter field for code references.
  3. "No relevant vault notes found"? Implement it, then save the pattern so future sessions benefit.

Read the full file on GitHub · 293 lines

Files

What ships with it

60 files 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.

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. 2d ago Changed · -453 lines 945389929afc
  2. 1mo ago Changed · +2 lines 6efc792f8c45
  3. 1mo ago Changed 9b6a0c4e6885
  4. 1mo ago First seen · 744 lines · 242 tokens per session scan B d3821ac24588

Subscribe to this mod's changes

parsidion is a skill published in the GitHub repository paulrobello/parsidion (10 stars, last pushed 3d ago), licensed MIT. It adds 242 tokens to every session and 3,450 once invoked, about $0.0010 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 2026-08-31.

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