# u4a.ai
#
# This site exists to be read, quoted and argued with — by people and by
# agents. Everything here is public, Apache-2.0, and safe to index.
#
# The crawlers that read on behalf of a language model are named explicitly
# rather than left to the wildcard. The wildcard already allows them; naming
# them is a statement of intent, so nobody has to guess whether the omission
# was deliberate.

User-agent: *
Allow: /

User-agent: GPTBot
Allow: /

User-agent: OAI-SearchBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: ClaudeBot
Allow: /

User-agent: Claude-User
Allow: /

User-agent: Claude-SearchBot
Allow: /

User-agent: PerplexityBot
Allow: /

User-agent: Google-Extended
Allow: /

User-agent: Applebot-Extended
Allow: /

User-agent: CCBot
Allow: /

# The whole site in one fetch.
Sitemap: https://u4a.ai/sitemap.xml

# A guided index for language models — see https://llmstxt.org
# Every page is also available as Markdown by appending .md to its URL —
# /docs/<section>/<page>.md and /blog/<slug>.md — and the site speaks MCP at
# https://u4a.ai/mcp (tools: listDocs, getDoc, listBlogs, getBlog).