dotfiles: Skill for Claude Code

.agents/skills/turnstile-spin/SKILL.md

turnstile-spin is a skill for Claude Code, Codex from Jxck/dotfiles. It costs 100 tokens per session (3,963 once invoked), scanned B, original, no licence file.

A setup guide for Cloudflare Turnstile, Cloudflare’s CAPTCHA alternative for distinguishing people from automated requests.

In plain words
What is it for?
Adding Turnstile to forms, creating the widget, wiring verification into an existing backend, and validating the setup.
Why use it?
It connects the browser widget to server-side verification so protected forms can reject invalid submissions.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is Jxck/dotfiles's own configuration. It tells Claude Code and Codex how to work on dotfiles 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 dotfiles configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Jxck/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/Jxck/dotfiles/main/.agents/skills/turnstile-spin/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Jxck/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.

agentmods badge for turnstile-spin

README.md
[![agentmods](https://agentmods.dev/badge/skills/jxck/dotfiles/turnstile-spin.svg)](https://agentmods.dev/skills/jxck/dotfiles/turnstile-spin)
Your own site
<a href="https://agentmods.dev/skills/jxck/dotfiles/turnstile-spin"><img src="https://agentmods.dev/badge/skills/jxck/dotfiles/turnstile-spin.svg" alt="Measured on agentmods" height="20"></a>
Per session 100 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,963 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00100 $0.03963
Opus 5 $0.00050 $0.01982
Sonnet 5 $0.00020 $0.00793
Haiku 4.5 $0.00010 $0.00396

Measured 6d ago against content hash d02eff4e8f30, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

turnstile-spin 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 5 executable files (scripts/auth-probe.sh, scripts/fetch-secret.sh, scripts/persist-skill.sh, …), 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

const r = await fetch('https://challenges.cloudflare.com/turnstile/v0/siteverify', { method: 'POST',

Makes network callslowCapability

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

2. **CLI check.** Spin's helper scripts use `curl` against `api.cloudflare.com` and `npx wrangler whoami` for account enumeration. Widget creation in Step 8 prefers `wrangler turnstile widget create` when the subcommand
.agents/skills/turnstile-spin/SKILL.md · 193 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 6d ago First seen · 193 lines · 100 tokens per session scan B d02eff4e8f30

Subscribe to this mod's changes

turnstile-spin is a skill published in the GitHub repository Jxck/dotfiles (95 stars, last pushed 6d ago), with no licence file. It adds 100 tokens to every session and 3,963 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.