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 agentmods add skills/septemc/mistakebookskill/notebooknpx skills add Septemc/MistakebookSkill --skill notebookgit clone --depth 1 https://github.com/Septemc/MistakebookSkillWrote 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/septemc/mistakebookskill/notebook)<a href="https://agentmods.dev/skills/septemc/mistakebookskill/notebook"><img src="https://agentmods.dev/badge/skills/septemc/mistakebookskill/notebook.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00040 | $0.00275 |
| Opus 5 | $0.00020 | $0.00138 |
| Sonnet 5 | $0.00008 | $0.00055 |
| Haiku 4.5 | $0.00004 | $0.00028 |
Grade A, and why
notebook 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 4d 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.
What it actually says
Notebook Entry
This is the Codex skill-chip wrapper for Mistakebook note mode.
Before acting, read these source files so this wrapper keeps the same behavior as the core Mistakebook note flow:
../../skills/mistakebook/SKILL.md../../skills/mistakebook/references/activation-patterns.md../../skills/mistakebook/references/storage-and-scope.md../../skills/mistakebook/references/archive-schema.md
When this skill is invoked:
- Treat the current task as a Mistakebook
noteflow - First organize the current long-term item
- Explain why it is worth keeping
- End with exactly:
如果这个事项值得长期注意，也可以告诉我“写入记事本”，我会把它归档到记事本并同步刷新记忆。 - Do not archive until the user explicitly confirms the note should be saved
This wrapper exists for Codex UX only. It should preserve the current notebook workflow while entering through a skill chip instead of a prompt body expansion.
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.
- 4d ago First seen · 27 lines · 40 tokens per session scan A 709059fb3567
notebook is a skill published in the GitHub repository Septemc/MistakebookSkill (23 stars, last pushed 4mo ago), licensed MIT. It adds 40 tokens to every session and 275 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 2026-08-30.
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