close-books

close-books is a skill for Claude Code, Codex from srmackey/insitu. It costs 17 tokens per session (61 once invoked), scanned A, original, MIT.

A small command for closing a day's ledger, meaning the record of financial or other account activity. It asks for an account, amount, and reason, then writes a closing note.

In plain words
What is it for?
Recording the final amount and reason for an account at the end of a workday.
Why use it?
It provides a fixed closing step so the record is completed once without adding invented details.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/srmackey/insitu/close-books
Any agent
npx skills add srmackey/insitu --skill close-books
Clone the repo
git clone --depth 1 https://github.com/srmackey/insitu

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 close-books

README.md
[![agentmods](https://agentmods.dev/badge/skills/srmackey/insitu/close-books.svg)](https://agentmods.dev/skills/srmackey/insitu/close-books)
Your own site
<a href="https://agentmods.dev/skills/srmackey/insitu/close-books"><img src="https://agentmods.dev/badge/skills/srmackey/insitu/close-books.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 61 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00017 $0.00061
Opus 5 $0.00009 $0.00030
Sonnet 5 $0.00003 $0.00012
Haiku 4.5 $0.00002 $0.00006

Measured 4d ago against content hash a24ed045a75c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

close-books 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.

examples/vault/skills/close-books/SKILL.md · 11 lines

What it actually says

Close books

  1. Name the account, the amount, and the reason.
  2. Write the closing note in the ledger.
  3. Stop. Do not invent a second close.
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. 4d ago First seen · 11 lines · 17 tokens per session scan A a24ed045a75c

Subscribe to this mod's changes

close-books is a skill published in the GitHub repository srmackey/insitu (0 stars, last pushed today), licensed MIT. It adds 17 tokens to every session and 61 once invoked, about $0.0001 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.

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