fleeting-note

fleeting-note is a skill for Claude Code, Codex from mikonos/zettelkasten-agent-skills. It costs 32 tokens per session (443 once invoked), scanned A, original, MIT.

A note-taking workflow for quickly capturing a new idea, checking that it can be explained simply, and connecting it to related ideas. It follows a Luhmann-style method, where notes are small, identifiable, and linked together.

In plain words
What is it for?
Use it to record a sudden idea, preserve what triggered it, test its meaning, find related notes, and decide whether to keep, split, or expand it.
Why use it?
It prevents a brief thought from being lost while avoiding the confusion of mixing several unrelated ideas into one note.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to record a sudden idea, preserve what triggered it, test its meaning, find related notes, and decide whether to keep, split, or expand it.

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Install with agentmods
npx agentmods add skills/mikonos/zettelkasten-agent-skills/fleeting-note
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 mikonos/zettelkasten-agent-skills --skill fleeting-note
Clone the repo
git clone --depth 1 https://github.com/mikonos/zettelkasten-agent-skills

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 fleeting-note

README.md
[![agentmods](https://agentmods.dev/badge/skills/mikonos/zettelkasten-agent-skills/fleeting-note/github.svg)](https://agentmods.dev/skills/mikonos/zettelkasten-agent-skills/fleeting-note)
Your own site
<a href="https://agentmods.dev/skills/mikonos/zettelkasten-agent-skills/fleeting-note"><img src="https://agentmods.dev/badge/skills/mikonos/zettelkasten-agent-skills/fleeting-note/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 fleeting-note

Your own site · 80×15
<a href="https://agentmods.dev/skills/mikonos/zettelkasten-agent-skills/fleeting-note"><img src="https://agentmods.dev/badge/skills/mikonos/zettelkasten-agent-skills/fleeting-note.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 443 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00032 $0.00443
Opus 5 $0.00016 $0.00221
Sonnet 5 $0.00006 $0.00089
Haiku 4.5 $0.00003 $0.00044

Measured 11d ago against content hash 7423e5f7c651, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

fleeting-note 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 11d 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.

skills/fleeting-note/SKILL.md · 75 lines

What it actually says

Fleeting Note

Role

Act as a Luhmann-style assistant: capture the seed as-is, then help it grow through clarification and links.

Quick start

  • Record the raw thought + what triggered it (no polishing yet).
  • Run a one-sentence (Feynman) test.
  • Propose links and the next move: keep / split / upgrade to a permanent note.

Workflow

Step 1: Capture & understand

  • Keep a single core idea (atomic)
  • Preserve the original wording
  • Capture context and trigger

Feynman test

  • If you can’t explain it in one sentence → clarify first
  • If multiple independent ideas → split into multiple seeds

Step 2: Deepen & connect

  • Identify assumptions and the logic chain
  • List what must be validated
  • Look for links:
    • concept links (past ideas)
    • method links (similar thinking tools)
    • cross-domain analogies

Step 3: Integrate into the network

  • If both notes keep unique value → add bidirectional links
  • If a combined note would create new value → propose a “combo note”
  • If a series is forming → propose an index note

Output template

# YYYYMMDD_Fleeting_Topic

## 🆔 Attributes
- **ID**: [[YYYYMMDD_Fleeting_Topic]]
- **Status**: SEED

[Raw user text]

**One-sentence summary**: [Feynman test]

## Trigger context
[When/why it occurred]

## Analysis
### Value
[Uniqueness, potential application]

### Logic
[Assumptions, directions]

## Next actions (optional)
[Concrete next step]

## Links
- [[Related note]] - why

Quality checks

  • Atomic: one core idea
  • One-sentence explainable
  • ≥2 meaningful links
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. 11d ago First seen · 75 lines · 32 tokens per session scan A 7423e5f7c651

Subscribe to this mod's changes

fleeting-note is a skill published in the GitHub repository mikonos/zettelkasten-agent-skills (2 stars, last pushed 7mo ago), licensed MIT. It adds 32 tokens to every session and 443 once invoked, about $0.0002 per session on Opus 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.