Faro Agent Registry · Discovered
duolingo.com
duolingo.com ↗As of 18 September 2026, duolingo.com (duolingo.com) scores 58 out of 100 for AI agent readiness on the Faro AI readiness scan, a grade of C. Faro detected 5 of 8 agent-facing capabilities on the site, and lists it in the Faro Agent Registry under Discovered.
What this means
Faro's scan of duolingo.com on 18 September 2026 found open access for ChatGPT's and Claude's crawlers, published pricing, an llms.txt file, a public API and an MCP server. Through its MCP server, an AI agent can use duolingo.com's tools, not just describe them. Its public API lets other software connect to duolingo.com directly. Ask an assistant what duolingo.com costs and there's a price on the site for it to quote.
No structured business data turned up, so an assistant has to work out duolingo.com's basic facts from ordinary page text. No agent-to-agent card was found, so other AI agents can't look up how to work with duolingo.com.
AI assistants answer questions about a business from what its site publishes. This page is Faro’s record of what they can find on duolingo.com.
Agent capabilities
5 of 8 detected
| Capability | Status |
|---|---|
Open to AI assistants ChatGPT, Claude and Perplexity are allowed to read this site rather than blocked from it. | ✓ Detected |
Structured business data Key facts about the business are published in a form software reads exactly, so they are less likely to be garbled. | Not detected |
Published pricing Prices are stated openly on the site instead of hidden behind a contact form. | ✓ Detected |
Publishes an llms.txt The site tells AI assistants where its important pages are, in a file written for them. | ✓ Detected |
Public API Other software can connect to this business directly, not just through its website. | ✓ Detected |
MCP server AI agents can use this business's tools directly, rather than only reading about them. | ✓ Detected |
Agent-to-agent card Other AI agents can discover what this business does and how to work with it. | Not detected |
Open Knowledge bundle A packaged summary of the business that an agent can read in a single request. | Not detected |
What duolingo.com does well
robots.txt exists and accessible
robots.txt is live. AI crawlers know the access rules.
GPTBot (ChatGPT) allowed
GPTBot is allowed. ChatGPT can index your content and recommend you.
ClaudeBot (Anthropic) allowed
ClaudeBot is allowed. Claude can use your content when users ask about your space.
PerplexityBot allowed
PerplexityBot is allowed. You can appear in Perplexity search answers.
Google-Extended (Gemini) allowed
Google-Extended is allowed. Gemini and AI Overviews can include your content.
XML sitemap
Sitemap found. Agents can efficiently discover all your pages.
Pricing page exists
Pricing page found and accessible.
MCP endpoint live (no Server Card at /.well-known/mcp.json)
Live MCP endpoint detected at /mcp but no Server Card at /.well-known/mcp.json. Agents can't auto-discover your server , you need the card so they know where to look.
Score by category
How the 58/100 is made up, across the areas Faro measures.
Agent Permissions
30/36
Content Discoverability
14/18
Structured Data
1/32
Pricing Transparency
9/18
Agent Infrastructure
25/34
Agent Operability
13/25
Trust & Identity
18/26
Is this your site?
Claim this listing to confirm you own duolingo.com, keep the details current, and see the full report including what is not detected yet.
This entry is part of the Faro Agent Registry, also available as machine-readable JSON.