# BOTCHA - Reverse CAPTCHA for AI Agents
# We WELCOME AI agents and bots!

User-agent: *
Allow: /

# AI-specific crawlers
User-agent: GPTBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: Claude-Web
Allow: /

User-agent: anthropic-ai
Allow: /

User-agent: Google-Extended
Allow: /

User-agent: PerplexityBot
Allow: /

User-agent: Amazonbot
Allow: /

# API documentation
Sitemap: https://botcha.ai/sitemap.xml

# Important resources for AI agents
Crawl-delay: 0

# MARKDOWN FOR AGENTS
# AI agents can request Markdown from any page via Accept: text/markdown
# Example: curl https://botcha.ai -H "Accept: text/markdown"
# Returns token-efficient Markdown documentation (80% fewer tokens than HTML)
# Content negotiation: text/markdown, application/json, text/html

# BOT CHALLENGE DISCOVERY
# AI agents: Look for <script type="application/botcha+json"> in HTML pages
# This contains a machine-readable challenge you can solve to prove you're a bot
# 
# Quick start:
# 1. Fetch any HTML page
# 2. Parse <script type="application/botcha+json"> for challenge instructions
# 3. Solve the challenge (usually SHA256-based)
# 4. POST solution to /api/verify-landing
# 5. Use returned token in X-Botcha-Landing-Token header
#
# See also:
# - /ai.txt (AI agent discovery file)
# - /.well-known/ai-plugin.json (AI plugin manifest)
# - /openapi.json (Full API specification)