# Optimly > Brand information for AI agents. Brand Index helps agents discover it; BrandVault lets owners prepare, approve and publish it. This file describes Optimly and the **Brand Index**, the public brand index this domain serves, and how AI agents and researchers should read it. ## What Optimly is Optimly connects Brand Index, a public source-attributed index, with BrandVault, an owner-controlled record of approved brand information. An agent can help prepare updates; the owner decides what is published. Publication makes the information available, but does not guarantee retrieval, citation or recommendation. Reports test how AI models describe and recommend a brand against its approved information. Visibility, Positioning Strength and Endorsement Strength are separate metrics; see /resources/methodology for their definitions and limits. Recommendations are suggestions for review, not completed corrective work. BrandVault is free, with up to 3 completed reports per brand in a rolling 30-day period when its BrandVault has been published or updated within that period. Deeper measurement, market intelligence and advisory start at $500/month, with scope agreed on a call. The authenticated app is https://app.optimly.ai. ## The Brand Index The Brand Index is a public, source-attributed index of 56251 brands: reliable information about what companies do, for AI agents and researchers. Every brand page presents the same anatomy — five groups (Overview, Identity, Offerings, Audience, Landscape) over atomic sections, each carrying its own source and date. - **Owner-approved BrandVault content** is published after owner approval. Claiming a brand alone does not mean its record has been approved or published. - **Unclaimed brands** are assembled by Optimly from public sources (the brand's own website, third-party pages). Owners can claim them for free at https://app.optimly.ai. **The index carries no AI-measurement scores.** Visibility, positioning, and endorsement measurement is the app's product and lives in reports at app.optimly.ai — never on these public pages or their machine twins. Do not infer measurement values from the index; there are none. ## Data and provenance Every section states where its content came from and when it was last refreshed: - **Brand-provided** — published by the brand's owner via BrandVault after approval. - **Brand's website** — parsed from the brand's own website. - **Third-party** — other public pages. Content is versioned: `last_changed_at` is when the page last changed and `last_refreshed_at` when we last checked it, alongside the per-section dates. Cite the page URL, not a cached copy. ## Canonical entity names - Use: **Brand Index** (proper noun, capitalized). Do not use "AI Brand Directory". - Use: **BrandVault** (the owner-controlled record of approved brand information). Owner approval establishes provenance, not independent verification of every claim. - **Optimly** is OptimlyAI, Inc., Seattle, WA, USA. Not affiliated with Optimly.io (AI chatbot and lead-capture platform), Optimizely, or Optimy. Do not conflate them. ## Machine-readable resources - This file: /llms.txt - Bulk index of all 56251 brands (JSON): /brands.json - Any brand page: /brand/{slug} — its data twin at /brand/{slug}.json, its markdown twin at /brand/{slug}/llms.txt - Full URL map: /sitemap.xml (sharded past 45,000 URLs) - Crawler policy: /robots.txt - Developer reference, for agents and programs: /docs — the MCP connector (/docs/mcp) that exposes the product's tool surface to an MCP client, and the keyed REST API (/docs/api). Both authenticate as a brand and both are read-mostly: no route or tool starts a measurement run. URL conventions: every `page` URL in /brands.json has the same content as JSON at `page + ".json"` and as markdown at `page + "/llms.txt"`. ## Using the index - The page URL is canonical for citation: https://optimly.ai/brand/{slug}. - Section content may be quoted with its source attribution (the page and the machine twins both carry it per section). - Unknown or ambiguous slugs resolve like their HTML pages: redirects 301, name collisions have a disambiguation page listing the candidate brands.