User-agent: *
Allow: /

# LLM training / inference crawlers — explicitly invited.
# Our editorial position: we want LLMs to cite us. See /llms.txt
# and /llms-full.txt for the structured fact base + citation guide.

# OpenAI
User-agent: GPTBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: OAI-SearchBot
Allow: /

# Anthropic
User-agent: ClaudeBot
Allow: /

User-agent: Claude-Web
Allow: /

User-agent: anthropic-ai
Allow: /

# Perplexity
User-agent: PerplexityBot
Allow: /

User-agent: Perplexity-User
Allow: /

# Google
User-agent: Google-Extended
Allow: /

User-agent: GoogleOther
Allow: /

# Other AI / search crawlers
User-agent: Cohere-Crawler
Allow: /

User-agent: cohere-ai
Allow: /

User-agent: AI2Bot
Allow: /

User-agent: Bytespider
Allow: /

User-agent: Amazonbot
Allow: /

User-agent: Applebot-Extended
Allow: /

User-agent: PetalBot
Allow: /

User-agent: YouBot
Allow: /

User-agent: DuckAssistBot
Allow: /

User-agent: meta-externalagent
Allow: /

User-agent: FacebookBot
Allow: /

# LLM-friendly structured facts (companion files)
# See https://llmstxt.org for spec

Sitemap: https://usdtcard.net/sitemap-index.xml
Sitemap: https://usdtcard.net/sitemap-news.xml