skill-maintenance

A set of rules for editing files in .claude/skills/, including Markdown formatting, metadata, file organization, and when to split content into reference files.

In plain words
What is it for?
Use it when creating, revising, reorganizing, or removing skills and their reference documents.
Why use it?
It helps keep skill files consistent, readable, and compatible with the project's conventions.

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/srombauts/sqlitecpp/skill-maintenance
Any agent
npx skills add SRombauts/SQLiteCpp --skill skill-maintenance
Clone the repo
git clone --depth 1 https://github.com/SRombauts/SQLiteCpp

Made for: Claude Code, Codex.

Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,108 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 $0.00076 $0.02108
Opus 5 $0.00038 $0.01054
Sonnet 5 $0.00015 $0.00422
Haiku 4.5 $0.00008 $0.00211

Measured 2d ago against content hash 31b30378379a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skill-maintenance 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 2d 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.

.claude/skills/skill-maintenance/SKILL.md · 183 lines

How it starts

The opening of the file, as written. The whole thing — 183 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Maintenance

Editing conventions for files under .claude/skills/** (including SKILL.md and any references/*.md). Does not apply to markdown elsewhere in the repo. Apply on every edit. Do not retroactively rewrite skills that drift from these rules. Refactor only when you are already editing the skill for another reason.

For the upstream specification, see Anthropic's Skill authoring best practices. The conventions below are repo-local extensions and reinforcements of that guide.

Markdown style

Wrap markdown at 100 characters. In rendered Markdown, single newlines fold into spaces, so wrapping does not affect the output, but it makes side-by-side diffs and review readable.

ASCII only. No emoji, no symbolic icons (warning signs, check marks, decorative arrows, prohibition signs, etc.), no emoticons. Plain ASCII keeps git diff and GitHub's diff/blame views readable and copy-pasteable, and stays consistent with the repo's .editorconfig (UTF-8 encoding, but ASCII content avoids review surprises). For emphasis use bold, headings, or a leading word like NEVER.

No em dashes or en dashes. Em dashes () and en dashes () are non-ASCII, so the ASCII-only rule above already bans them. This line restates it because they slip in through copy-paste and autocorrect. Do not use -- or - as a substitute; restructure instead: a period (new sentence), a comma (a tight aside), a colon (an explanation), or parentheses (a true aside). This keeps skill markdown consistent with the humanizer skill, which bans em dashes in all published prose.

Frontmatter

Only name and description fields. No version, allowed-tools, or other keys unless a tool actively reads them.

Use the YAML folded block scalar (>-) for any description longer than one line. Wrap lines at 100 chars inside the scalar; YAML folds them into one logical string.

description: >-
  SQLiteCpp coding standards and API rules.
  Use when editing core sources, changing public headers, adding Doxygen comments,
  or enforcing RAII and naming conventions.

Read the full file on GitHub · 183 lines

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 First seen · 183 lines · 76 tokens per session scan A 31b30378379a

Subscribe to this mod's changes

skill-maintenance is a skill published in the GitHub repository SRombauts/SQLiteCpp (2,781 stars, last pushed 6d ago), licensed MIT. It adds 76 tokens to every session and 2,108 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 2026-08-30.

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