isvisible.ai?
isvisible.ai is a free AI visibility audit tool that instantly scores your website (0–100) and shows an agent-by-agent access map by checking robots.txt, llms.txt, and live probes across 13 major AI crawlers.
https://isvisible.ai/?ref=producthunt
Product Information
Updated:Jul 21, 2026
What is isvisible.ai?
isvisible.ai helps you understand whether AI assistants and AI-powered search systems can access and use your website. As tools like ChatGPT, Claude, Perplexity, and Google AI Overviews become a primary “front door” to the web, isvisible.ai provides a fast, no-login audit that reveals if your content is reachable by the crawlers and answer engines that power AI discovery. The product generates an immediate report with a visibility score, a grade, and clear diagnostics (including robots.txt and llms.txt status) so site owners can identify why their content may or may not appear in AI-generated answers.
Key Features of isvisible.ai?
isvisible.ai is a free, instant AI visibility audit tool that checks whether major AI systems and search crawlers can access your website. By analyzing robots.txt and llms.txt and running live probes against 13 specific AI user agents (spanning search engines, AI training crawlers, and AI answer engines), it generates a transparent 0–100 AI Visibility Score with an agent-by-agent access map, category breakdowns, and a downloadable report—helping teams quickly identify and fix crawler blocking that prevents their content from being cited or used in AI-generated answers.
Instant AI Visibility Score (0–100): Generates a graded score in seconds to quantify how visible your site is to AI assistants and AI-powered search, with a clear explanation of how scoring is calculated.
robots.txt + llms.txt analysis: Checks for the presence and impact of robots.txt and llms.txt, showing whether access rules allow or block AI crawlers and providing a dedicated signal boost for publishing llms.txt.
13-agent access map with live probing: Tests access for 13 AI crawlers (e.g., GPTBot, ClaudeBot, PerplexityBot, Google-Extended, OAI-SearchBot, ChatGPT-User) using both policy rules and a live homepage request to detect server-level blocking.
Category breakdown: Search vs Training vs Answer Engines: Separates visibility into three buckets—search crawlers powering AI-assisted search, training crawlers used for model training, and answer engines used for real-time retrieval—so you can prioritize what matters to your strategy.
Transparent report + PDF download: Provides an easy-to-share report with allowed/blocked status per agent, visibility signals found/missing, and a one-page PDF export for stakeholders.
Public API for automation: Offers a public API (request format published in its own llms.txt) so teams can programmatically check domains and integrate AI visibility checks into workflows.
Use Cases of isvisible.ai?
SEO and GEO readiness checks: Marketing/SEO teams validate that AI crawlers (e.g., Perplexity, ChatGPT browsing, Google-Extended) can access key pages so content can be cited in AI answers and AI Overviews.
Pre-launch technical audits for new websites: Product teams run a quick scan before launch or migration to ensure robots.txt rules or server settings aren’t accidentally blocking AI agents and search crawlers.
Enterprise governance and compliance review: Legal/security teams assess and document which AI training crawlers are blocked or allowed (e.g., GPTBot, ClaudeBot, Common Crawl, Meta training) to align with content usage policies.
Agency client reporting: Digital agencies generate shareable PDF reports and action lists to explain AI visibility issues to clients and justify technical remediation work.
Ongoing monitoring via API: DevOps or growth teams integrate the API into scheduled checks to catch regressions when robots.txt, CDN/WAF rules, or server configurations change.
Pros
Free and fast: no account or credit card required; results in seconds.
Actionable clarity: agent-by-agent allow/block map plus category breakdown makes issues easy to pinpoint.
Transparent methodology: clearly states scoring weights (agent access vs llms.txt) and uses both robots rules and live probes.
Automation-friendly: public API enables monitoring and integration into internal tooling.
Cons
Scope is primarily access/visibility signals: it doesn’t evaluate content quality, rankings, or whether AI engines will actually cite you for specific prompts.
Live probe is homepage-based and cached (e.g., 60 minutes), which may not capture page-level differences or very recent changes instantly.
llms.txt is still an emerging standard, so its practical impact can vary across AI platforms.
How to Use isvisible.ai?
1. Open isvisible.ai: Go to https://isvisible.ai/ to access the free AI visibility audit tool.
2. Enter your website URL: Paste your website address into the URL input field (no account or credit card required). The check starts immediately.
3. Let the tool analyze access signals: isvisible.ai checks your site’s robots.txt (standard crawler access rules) and llms.txt (a newer AI-focused summary file), then evaluates access rules for 13 AI crawlers (e.g., GPTBot, ClaudeBot, PerplexityBot, Google-Extended).
4. Review your AI Visibility Score (0–100) and grade: When the scan completes, you receive an instant score and grade (e.g., 'Grade D') indicating how visible your site is to AI systems.
5. Inspect the agent-by-agent access map: Check which specific agents are ALLOWED or BLOCKED. The report distinguishes between robots.txt blocks and live probe/server failures.
6. Understand the category breakdown: Review visibility by crawler category: Search Engines (Googlebot, Bingbot), AI Training Crawlers (e.g., GPTBot, ClaudeBot, CCBot, Applebot-Extended, meta-externalagent), and AI Answer Engines (ChatGPT-User, OAI-SearchBot, Claude-User, PerplexityBot).
7. Check whether llms.txt is found or missing: The report indicates if llms.txt exists at yourdomain.com/llms.txt. Publishing it can improve your score because llms.txt presence contributes to scoring.
8. Read the scoring methodology: Use the 'How the Score Is Calculated' section to interpret results: AI agent access is worth 80 points and llms.txt presence is worth 20 points; results are based on robots.txt rules plus a live homepage request with each crawler’s user agent (cached for 60 minutes).
9. Download the one-page PDF report (optional): Use the report’s PDF download option to save/share the results.
10. (Optional) Use the public API via an AI assistant: If you want to automate checks, use the isvisible.ai public API. The site states the exact request format is published at https://isvisible.ai/llms.txt so AI assistants with web access can read it, send the request, and return the score.
isvisible.ai? FAQs
isvisible.ai is a free AI visibility audit tool that checks whether major AI assistants and crawlers (e.g., ChatGPT, Claude, Perplexity, Google AI) can access your website and returns an instant 0–100 AI visibility score with a detailed report.
isvisible.ai? Video
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