VerticalSlices: Skill for Claude Code

.ai/skills/edit-cratis-docs/SKILL.md

edit-cratis-docs is a skill for Claude Code, Codex from Cratis/VerticalSlices. It costs 104 tokens per session (887 once invoked), scanned A, a copy of edit-cratis-docs, MIT.

A guide for editing Cratis documentation, whose source files live in each product repository under `Documentation/`. Cratis is a software platform, and its published documentation site combines content from those repositories.

In plain words
What is it for?
Use it to find, edit, synchronize, and verify documentation for Chronicle, Arc, Components, the CLI, and site-level pages.
Why use it?
It prevents changes being made to generated copies that will later be overwritten, and helps locate the actual source file for a documentation page.

Skill for Claude CodeCodex

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

This is Cratis/VerticalSlices's own configuration. It tells Claude Code and Codex how to work on VerticalSlices itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything VerticalSlices configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Cratis/VerticalSlices. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Cratis/VerticalSlices/main/.ai/skills/edit-cratis-docs/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Cratis/VerticalSlices

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 edit-cratis-docs

README.md
[![agentmods](https://agentmods.dev/badge/skills/cratis/verticalslices/edit-cratis-docs/github.svg)](https://agentmods.dev/skills/cratis/verticalslices/edit-cratis-docs)
Your own site
<a href="https://agentmods.dev/skills/cratis/verticalslices/edit-cratis-docs"><img src="https://agentmods.dev/badge/skills/cratis/verticalslices/edit-cratis-docs/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 edit-cratis-docs

Your own site · 80×15
<a href="https://agentmods.dev/skills/cratis/verticalslices/edit-cratis-docs"><img src="https://agentmods.dev/badge/skills/cratis/verticalslices/edit-cratis-docs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 887 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 100% copy Near-identical to another mod 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 $0.00104 $0.00887
Opus 5.5 $0.00042 $0.00355
Sonnet 5.5 $0.00021 $0.00177
Haiku 4.5 $0.00010 $0.00089

Measured 1mo ago against content hash edc005bf722c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

edit-cratis-docs 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 1mo 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.

Origin

This is a copy

100% identical to edit-cratis-docs — 60 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.ai/skills/edit-cratis-docs/SKILL.md · 51 lines

How it starts

The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Editing a Cratis documentation page

Scope this skill to source files under Documentation/** in the product or contributing repo. Site-level pages in Documentation/web are owned by the Documentation repo.

Cratis docs content lives in each product's own repo under that repo's Documentation/ folder; the published site (in the Documentation repo at Documentation/web/) aggregates them. Editing the wrong copy wastes the work — the per-product folders under web/src/content/docs/ are generated and overwritten.

1. Find the source of truth

Map the page URL to its owning repo:

URL Source file
/chronicle/** Chronicle/Documentation/**
/arc/** Arc/Documentation/** (the ApplicationModel repo, cloned as Arc)
/components/** Components/Documentation/**
/cli/**, /fundamentals/**, /contributing/** the matching repo's Documentation/
/, /why-cratis, /cratis-stack, /glossary, /comparisons/**, /adopting-cratis, … Site-level pages: use the Documentation repo; source lives in Documentation/web/src/content/docs/*.{md,mdx}.

Example: /chronicle/concepts/event-source/ → Chronicle/Documentation/concepts/event-source.md. If unsure, grep -rl "<a distinctive sentence>" */Documentation Documentation/web/src/content/docs/*.md*.

Never edit Documentation/web/src/content/docs/{chronicle,arc,components,cli,fundamentals,contributing}/ — generated and git-ignored.

2. Edit the source

  • Match the page's Diátaxis type (tutorial / how-to / explanation / reference) and the tour voice (teach, don't dump) — see the writing-cratis-docs rule (the tour-voice checklist + Starlight authoring tools). Don't mix types.
  • Verify every framework API in a code example against real source before writing it — readers paste them verbatim. (See the writing-correct-examples rule; grep Studio *.cs/*.tsx and the product Source/ trees.)
  • Link rules: product .md may use ./foo.md; links to a .mdx page must be extension-less (./foo); site-level .mdx uses clean root-relative URLs (/arc/...).

Read the full file on GitHub · 51 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. 1mo ago First seen · 51 lines · 104 tokens per session scan A edc005bf722c

Subscribe to this mod's changes

edit-cratis-docs is a skill published in the GitHub repository Cratis/VerticalSlices (2 stars, last pushed 1mo ago), licensed MIT. It adds 104 tokens to every session and 887 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to edit-cratis-docs, differing in 60 lines, and is treated as a copy.

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