# 1Lookup, https://www.1lookup.io # Default: allow all traditional search crawlers. User-agent: * Allow: / # The LLM index files, the OpenAPI spec and the MCP server card are meant to # be fetched. Allow: /llms.txt Allow: /llms-full.txt Allow: /openapi.json Allow: /api/openapi.yaml Allow: /.well-known/mcp/server-card.json # --- AI / answer-engine crawlers (explicitly allowed) --- # 1Lookup wants to be discoverable and citable in AI answers, so the major # AI training and AI-search user-agents are explicitly welcomed. See # /llms.txt and /llms-full.txt for a structured index of the site. # OpenAI User-agent: GPTBot Allow: / User-agent: OAI-SearchBot Allow: / User-agent: ChatGPT-User Allow: / # Anthropic User-agent: ClaudeBot Allow: / User-agent: Claude-Web Allow: / User-agent: Claude-User Allow: / User-agent: Claude-SearchBot Allow: / User-agent: anthropic-ai Allow: / # Perplexity User-agent: PerplexityBot Allow: / User-agent: Perplexity-User Allow: / # Google AI (Gemini / Vertex training), separate from Googlebot search User-agent: Google-Extended Allow: / # Google grounding for Vertex AI, separate from Google-Extended User-agent: Google-CloudVertexBot Allow: / # Apple. Applebot drives Siri and Spotlight answers; Applebot-Extended governs # training only, so both are named. User-agent: Applebot Allow: / User-agent: Applebot-Extended Allow: / # Meta AI (training crawler, and the user-triggered fetch that produces citations) User-agent: Meta-ExternalAgent Allow: / User-agent: Meta-ExternalFetcher Allow: / # Amazon (feeds Alexa and Rufus answers) User-agent: Amazonbot Allow: / # DuckDuckGo AI answers User-agent: DuckAssistBot Allow: / # Mistral Le Chat, user-triggered fetch User-agent: MistralAI-User Allow: / # Cohere grounded generation User-agent: cohere-ai Allow: / # You.com answer engine User-agent: YouBot Allow: / # Allen Institute for AI (OLMo corpora, feeds open models) User-agent: Ai2Bot Allow: / # Common Crawl (feeds many downstream LLMs) User-agent: CCBot Allow: / # Sitemap location Sitemap: https://www.1lookup.io/sitemap.xml # The indexable slice of the ZIP code cluster gets its own file. The other # ~40,500 ZIP pages stay live and linked but render noindex, so they are not # listed in any sitemap. Sitemap: https://www.1lookup.io/zip-sitemap.xml # LLM-readable index # https://www.1lookup.io/llms.txt # https://www.1lookup.io/llms-full.txt # MCP server card (machine-readable connection details for AI agents) # https://www.1lookup.io/.well-known/mcp/server-card.json # OpenAPI description of the 1Lookup REST API # https://www.1lookup.io/openapi.json # https://www.1lookup.io/api/openapi.yaml # Markdown content negotiation (https://acceptmarkdown.com) # Every page also answers `Accept: text/markdown` with a markdown # representation of itself, and varies on Accept. # Disallow admin/private paths if any # Disallow: /admin/ # Disallow: /api/