ISO 24495 Plain Language Skills plugin
Seven plain-language skills inspired by ISO 24495: legal drafting, technical writing, document audits and an agent output style
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- Last commit
- MIT
Minimal access
Why this level
- The skills change the style of agent replies and edit texts on request and run no commands or network actions
Install
- Works in
In your terminal, with SkillFoxx CLI
npx skillfoxx add plugins/iso-24495-plain-language-skillsDetects the agents on your machine, shows the access level and pins the version.
Other ways to install
Access and checks
How we reviewMinimal accessThe tool runs nothing and makes no network calls.
- The skills change the style of agent replies and edit texts on request and run no commands or network actions
This is third-party code. Review the repository files before installing.
What it does
A set of seven skills in the Agent Skills format defines plain-language rules for writing and code. The core skill `iso-24495-1` governs everything the agent writes to the user: no filler preambles, short sentences and paragraphs, active voice, a structure for fast reading. The others extend it: `iso-24495-2` for contracts and licences, `iso-24495-3` for documentation and code review, and the provisional `iso-24495-4` and `iso-24495-5` for organisational implementation and document design. Separate skills apply the principles to code (`iso-24495-code`: unit order, names, comments, error messages) and check a chosen `.md` or `.txt` file (`iso-24495-text-audit`) with a report of mechanical findings. The Claude Code plugin adds an ISO 24495 output style switched on with `/output-style`. For Codex the same rules sit in the `iso-24495-style` skill.
Who it is for. Technical writers, lawyers and teams who want an agent to write clearly: contracts without legalese and documentation with exact file citations.
Good fit when
- A licence agreement must be rewritten so every condition has a named actor
- Architecture documentation is overloaded and needs a gradual way into the topic
- Agent replies are long and padded and should be short and to the point
- A folder of notes must be checked for long sentences and undefined acronyms
Not a fit when
- A text certified to the standard is needed: the skills are only inspired by the series and do not guarantee compliance
- The text is in Russian or another language: rules and counters are tuned for English
- Skills 4 and 5 are needed as a normative base: they rest on unpublished drafts
Example request
Apply iso-24495-2 to this licence text.Limitations
The skills apply principles inspired by the ISO 24495 series and do not confirm compliance with the standard. Skills 4 and 5 are marked provisional and rest on unpublished committee drafts ISO/CD 24495-4 and ISO/WD 24495-5. The `iso-24495-4` tooling is written in TypeScript and runs through Bun. For Codex the style sits in `codex-skills/`, because Codex has no output style. The rules are designed for English text. The latest commit in the repository is from September 2026.
How to disable. Run `/plugin uninstall iso-24495-plain-language@iso-24495` and `/plugin marketplace remove iso-24495`. The output style is switched off in `/output-style`, and the plugin does not change your text files.
FAQ
How do I install the plugin?
In Claude Code run `/plugin marketplace add https://github.com/GaZmagik/iso-24495.git`, then `/plugin install iso-24495-plain-language@iso-24495`.
What are the seven skills?
The core `iso-24495-1`, `-2`, `-3`, the provisional `-4` and `-5`, the code skill `iso-24495-code` and the text audit `iso-24495-text-audit`.
How do I call a skill by hand?
Name it in the request: "Apply iso-24495-2 to this text". Otherwise the agent loads a skill itself when the description fits the task.
What does the text audit check?
A chosen file or folder of `.md`, `.markdown` and `.txt`. The report lists mechanical findings with locations and makes no compliance decision.
Does it work with Codex?
Yes, the marketplace is read from the same address. The output style is replaced there by the `iso-24495-style` skill in the `codex-skills/` folder.
Discussion
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README in short
The README lists the seven skills with the scope of each, shows installation for Claude Code and Codex, the output style and how to call by name. Checks, the Markdown parser design and measurement results follow.