Cloudflare Turnstile Bot Verification & Siteverify Skill

Implement privacy-preserving Cloudflare Turnstile challenge widgets on frontend forms with mandatory server-side Siteverify token validation and replay pro

---
name: turnstile-spin
description: Implement privacy-preserving Cloudflare Turnstile challenge widgets on frontend forms with mandatory server-side Siteverify token validation and replay protection. Use when working with Cloudflare Turnstile, Siteverify API, Edge Security, Form Protection.
triggers:
  - turnstile spin
  - cloudflare turnstile
  - siteverify api
---

# Cloudflare Turnstile Bot Verification & Siteverify Skill

## 1. When to Use This Skill
Load `skill-turnstile-spin` whenever an engineering or operations task involves **Cloudflare Turnstile, Siteverify API, Edge Security, Form Protection**. Specifically:
- Implement privacy-preserving Cloudflare Turnstile challenge widgets on frontend forms with mandatory server-side Siteverify token validation and replay protection.
- Designing, reviewing, or debugging production configurations without guesswork or deprecated flags.
- Running deterministic pre-flight and post-execution verification checks before reporting completion.

## 2. Prerequisites & Required Environment
- **Target Stack:** Cloudflare Turnstile, Siteverify API, Edge Security, Form Protection
- **Permissions:** Read-only inspection by default; ask for explicit confirmation before executing destructive mutations or production deployments.
- **Reference Repository:** `https://github.com/cloudflare/skills`

## 3. Step-by-Step Execution Playbook
1. **Context & Configuration Discovery:**
   Inspect existing project manifests (`package.json`, `wrangler.jsonc`, schema files, or environment declarations) before proposing changes. Never overwrite existing bindings or credentials blindly.
2. **Deterministic Implementation:**
   Apply the canonical patterns for **Cloudflare Turnstile**:
   - Enforce strict schema/type validation at every external boundary.
   - Include explicit error handling, structured logging, and idempotency keys on all mutating calls.
   - Keep secrets in environment variables or secret stores—never hardcode tokens in source files.
3. **Verification & Regression Gate:**
   Run the verification commands below and inspect both exit codes and output payloads before marking the task complete.

## 4. Reference Commands & CLI Workflow
```bash
curl -s https://challenges.cloudflare.com/turnstile/v0/siteverify -d secret=$TURNSTILE_SECRET -d response=$TOKEN
```

## 5. Edge Cases & Anti-Hallucination Guardrails
- **Zero Unverified Claims:** Never claim a deployment, migration, or API call succeeded without inspecting the command output or HTTP status code.
- **Rollback Readiness:** Always record the previous state or migration version so changes can be reverted cleanly if downstream health checks fail.

Synthesized Engineering Blueprint & Setup Guide