# OnTheStacks > OnTheStacks.dev is the public home of OnTheStacks machine-facing infrastructure and its existing Machine Presence products. ## Public products - OnTheStacks Machine Presence Inspector: https://onthestacks.dev/#inspector Read-only inspection of publicly observable website signals and source evidence. The Inspector does not sign in, send cookies, run site JavaScript, or submit forms to inspected websites. - OnTheStacks Machine Presence Agent: https://agent.onthestacks.dev/ Public-preview human interface that turns Machine Presence evidence into prioritized findings, a human-approved remediation plan, bounded artifacts, and verification. It does not mutate external websites, and V1 does not expose an autonomous Agent API. ## Machine access and documentation - MCP connection documentation: https://onthestacks.dev/connect.html - MCP endpoint: https://mcp.onthestacks.dev/mcp - Agent capability description: https://agent.onthestacks.dev/capabilities.json The human Inspector and MCP interface use the same inspection engine and normalized result contract. MCP inspection is read-only and accepts public HTTP or HTTPS URLs. No account or API key is required for the current public interface. ## Discovery and contact - Robots policy: https://onthestacks.dev/robots.txt - Sitemap: https://onthestacks.dev/sitemap.xml - BUILD contact page: https://onthestacks.dev/contact