Document agent readiness checks for mint score (#5346)

* Document agent readiness checks including new structured data check

Generated-By: mintlify-agent

* Apply suggestion from @ethanpalm

* Apply suggestion from @ethanpalm

* Apply suggestion from @ethanpalm

---------

Co-authored-by: mintlify[bot] <109931778+mintlify[bot]@users.noreply.github.com>
Co-authored-by: Ethan Palm <56270045+ethanpalm@users.noreply.github.com>

Author: mintlify[bot]

cli/commands.mdx

@@ -290,6 +290,34 @@ mint score <url> [flags]
 
 The command displays an overall readiness score and a breakdown of individual checks with pass/fail indicators.
 
+### Checks
+
+The score evaluates the following areas:
+
+| Check | What it verifies |
+| --- | --- |
+| `llmsTxtExists` | Agents can reach an [llms.txt](/ai/llmstxt) file at the site root. |
+| `llmsTxtValid` | The `llms.txt` file follows the expected format with headings, blockquote summary, and Markdown links. |
+| `llmsTxtSize` | The `llms.txt` file is within the size threshold so agents can consume it without truncation. |
+| `llmsTxtLinksResolve` | Links inside `llms.txt` resolve to live pages. |
+| `llmsTxtLinksMarkdown` | Links inside `llms.txt` use Markdown syntax. |
+| `llmsTxtDirective` | The `llms.txt` file contains usage directives. |
+| `llmsTxtFullExists` | An [llms-full.txt](/ai/llmstxt/#llms-full-txt) file is available for agents that need the complete content. |
+| `llmsTxtFullSize` | The `llms-full.txt` file is within a reasonable size for agents to process. |
+| `llmsTxtFullValid` | The `llms-full.txt` file contains valid content with headings. |
+| `llmsTxtFullLinksResolve` | Links inside `llms-full.txt` resolve to live pages. |
+| `skillMd` | Agents can reach a [skill.md](https://www.mintlify.com/docs/ai/skillmd) file for agent tool use. |
+| `contentNegotiationMarkdown` | The site returns Markdown when agents request it through content negotiation. |
+| `contentNegotiationPlaintext` | The site returns plain text when agents request it through content negotiation. |
+| `mcpServerDiscoverable` | Agents can discover an [MCP server](/ai/model-context-protocol) for tool-based agents. |
+| `mcpToolCount` | The MCP server exposes at least one tool. |
+| `openApiSpec` | There is an available OpenAPI or Swagger specification at a standard path. |
+| `robotsTxtAllowsAI` | The `robots.txt` file does not block AI crawlers. |
+| `sitemapExists` | There is a sitemap available for page discovery. |
+| `structuredData` | The homepage contains [JSON-LD](https://json-ld.org/) structured data (`<script type="application/ld+json">`). Reports the number of JSON-LD blocks and the schema types found. |
+
+Child checks only run when their parent check passes. For example, `llmsTxtValid` only runs if `llmsTxtExists` passes first.
+
 ---
 
 ## `mint new`