# Spiralist AI v18 Content Negotiation and Discovery

Release: `v18-ui-ux-seo-media-polish`  
Updated UTC: `2026-06-21T14:33:26Z`

Canonical routes serve semantic HTML by default and preserve Markdown and JSON representations through `Accept` negotiation or explicit format parameters. Discovery remains available through robots.txt, XML/Markdown sitemaps, llms files, agent cards, API catalog, OpenAPI, route representation index, AGENTS.md, and public UAI.

v18 synchronizes current release metadata, homepage content, FAQ facts, social imagery, and source-asset provenance without changing the declared capability boundary.