close-arc

close-arc is a skill for Claude Code, Codex from chipi/agentic-ai-homelab. It costs 88 tokens per session (517 once invoked), scanned A, original, MIT.

A session-closing guide for recording what was completed, what was decided, and what remains in a project's documentation. It also updates the documentation index and navigation.

In plain words
What is it for?
Use it after a milestone or multi-step coding session to create a history entry, update the documentation menu, mark finished next steps, record operational decisions, and suggest a version tag.
Why use it?
It prevents the next work session from having to reconstruct progress from chat history or memory. It keeps past history unchanged while adding a clear continuity record.

Skill for Claude CodeCodex

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

Good fit Use it after a milestone or multi-step coding session to create a history entry, update the documentation menu, mark finished next steps, record operational decisions, and suggest a version tag.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/chipi/agentic-ai-homelab/close-arc
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 chipi/agentic-ai-homelab --skill close-arc
Clone the repo
git clone --depth 1 https://github.com/chipi/agentic-ai-homelab

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-arc

README.md
[![agentmods](https://agentmods.dev/badge/skills/chipi/agentic-ai-homelab/close-arc/github.svg)](https://agentmods.dev/skills/chipi/agentic-ai-homelab/close-arc)
Your own site
<a href="https://agentmods.dev/skills/chipi/agentic-ai-homelab/close-arc"><img src="https://agentmods.dev/badge/skills/chipi/agentic-ai-homelab/close-arc/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 close-arc

Your own site · 80×15
<a href="https://agentmods.dev/skills/chipi/agentic-ai-homelab/close-arc"><img src="https://agentmods.dev/badge/skills/chipi/agentic-ai-homelab/close-arc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 88 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 517 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 $0.00088 $0.00517
Opus 5 $0.00044 $0.00259
Sonnet 5 $0.00018 $0.00103
Haiku 4.5 $0.00009 $0.00052

Measured 9d ago against content hash 96731daeb0bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

close-arc 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 9d 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.

workstation/claude/skills/close-arc/SKILL.md · 33 lines

What it actually says

close-arc

Write the paper trail that lets the next session pick up cold. History is append-only — never edit a past session doc; write a new one that references it.

Steps

  1. Next number. Highest NNNN in docs/history/ + 1. Filename NNNN-<short-slug>.md.
  2. Write the entry, matching the convention:
    • # NNNN — <arc name> · **Date:** · **Operator:** · **Agent:** · **Outcome:** (one line) · a sibling pointer to the prior history doc.
    • Body: what the operator pointed you at → what landed → decisions → Open threads (so the next session knows exactly where to resume).
  3. Nav + index. Add a nav entry under History in mkdocs.yml (the nav is the exhaustive index). Add a docs/history/README.md bullet only if that file enumerates every session — some repos keep it curated to the founding docs, in which case leave it.
  4. Decisions. For each non-trivial operational decision this arc, append a D-NNNN entry to docs/history/0002-decisions.md (grep-able, referenced by id). Structural decisions get an ADR instead (use new-doc).
  5. Strike NEXT_STEPS. In docs/wip/NEXT_STEPS.md, mark completed items - [x] ~~text~~ — *done note (date)*. Strike, never delete — the strikethrough is the paper trail.
  6. Version tag. If the repo's tagging gate is met, suggest git tag v<X>-<arc-slug> at the closing commit — don't tag unprompted.
  7. Validate. Run the docs-preflight skill.
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. 9d ago First seen · 33 lines · 88 tokens per session scan A 96731daeb0bb

Subscribe to this mod's changes

close-arc is a skill published in the GitHub repository chipi/agentic-ai-homelab (2 stars, last pushed 3d ago), licensed MIT. It adds 88 tokens to every session and 517 once invoked, about $0.0004 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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