A documentation lookup guide for Rex, a terminal multiplexer that lets users manage multiple shell sessions in one terminal. It checks Rex's official documentation and installed command-line tool before changing configuration or troubleshooting it.

Use it to answer questions about Rex configuration and agent integration, or to investigate shell and PATH problems inside Rex.

It reduces errors caused by guessing how Rex settings, agent hooks, layouts, paths, or remote sessions work.

How wcygan/dotfiles configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to wcygan/dotfiles. 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/wcygan/dotfiles/main/.agents/skills/rex-docs/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/wcygan/dotfiles

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/wcygan/dotfiles/rex-docs/github.svg)](https://agentmods.dev/skills/wcygan/dotfiles/rex-docs)

Your own site

<a href="https://agentmods.dev/skills/wcygan/dotfiles/rex-docs"><img src="https://agentmods.dev/badge/skills/wcygan/dotfiles/rex-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/wcygan/dotfiles/rex-docs"><img src="https://agentmods.dev/badge/skills/wcygan/dotfiles/rex-docs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 107 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,324 The whole file, excluding the scripts and references it only reads on demand.

Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00107	$0.01324
Opus 5.5	$0.00043	$0.00530
Sonnet 5.5	$0.00021	$0.00265
Haiku 4.5	$0.00011	$0.00132

Measured 6d ago against content hash ab4eb3f7dbac, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

rex-docs scanned grade B with 2 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 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/search.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

hook in `~/.claude/settings.json` and `~/.codex/hooks.json`. Those are

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Fetch with `curl -sL`. Start with `scripts/search.py`, then read the whole page

.agents/skills/rex-docs/SKILL.md · 108 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

scripts/search.py 1.2 KB runs code

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.

6d ago First seen · 108 lines · 107 tokens per session scan B ab4eb3f7dbac

Subscribe to this mod's changes

rex-docs is a skill published in the GitHub repository wcygan/dotfiles (195 stars, last pushed 4d ago), with no licence file. It adds 107 tokens to every session and 1,324 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it B with 2 findings (reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-31.

Productivity

rex-docs next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
rex-docswcygan/dotfiles	Skill	195	4d ago	none	B	107	Claude Code, Codex
orbit-notionnexu-io/open-design	Skill	106k	yesterday	Apache-2.0	A	117	Claude Code, Codex
agentmailpaperclipai/paperclip	Skill	111k	yesterday	MIT	A	30	Claude Code, Codex
Cortexdanielmiessler/LifeOS	Skill	20k	yesterday	MIT	A	184	Claude Code
rowboat-spacesrowboatlabs/rowboat	Skill	18k	yesterday	Apache-2.0	A	60	Claude Code, Codex
feishuHmbown/CodeWhale	Skill	41k	5d ago	MIT	A	33	Claude Code, Codex
pinchtab-mcppinchtab/pinchtab	Skill	11k	10d ago	MIT	A	52	Claude Code, Codex

dotfiles: Skill for Claude Code

Borrowing it

Wrote this? Show the measurements

What it costs to keep this loaded

Grade B, and why

Reads agent configuration directoriesmediumAgent snooping

Makes network callslowCapability

The source is not reproduced here

No licence file

What ships with it

What this file has done since we first saw it

rex-docs compared with skills from other repositories