isvisible.ai

isvisible.ai is a free, web-based tool that instantly audits how visible a website is to AI assistants and crawlers. By entering a URL, users receive a 0–100 AI Visibility Score along with a detailed agent-by-agent access map for 13 major AI crawlers, including GPTBot, ClaudeBot, PerplexityBot, and Google-Extended. The audit checks both the traditional robots.txt file and the newer llms.txt, which is designed to give AI systems a clean summary of site content. Results are delivered in seconds with no signup or credit card required. The tool categorizes crawlers into three groups: search engines (Googlebot, Bingbot), AI training crawlers (used for model training), and AI answer engines (real-time retrieval for AI assistants). It performs a live probe using each crawler's user agent to determine actual access, combining this with robots.txt rules to compute the score. The report also identifies whether an llms.txt file is present, which adds up to 20 points to the score. Designed for website owners, SEO professionals, and developers, isvisible.ai highlights how AI platforms are becoming a new front door to the web. Blocking AI crawlers can prevent content from appearing in AI-generated answers, potentially reducing traffic and visibility. The tool provides actionable insights: a missing or misconfigured robots.txt can block desired crawlers, while a well-crafted llms.txt can improve AI understanding of a site. The service is free, with no account required, and checks are cached for 60 minutes to balance freshness with server load. It includes a sample report on the homepage to illustrate the output, featuring a grade, breakdown by category, and transparent scoring methodology. A one-page PDF report download is also available, making it easy to share findings with teams or clients.

Category: AI SEO Tools
Pricing: Free

Problem solved

Many websites unknowingly block AI crawlers via robots.txt or lack an llms.txt file, causing their content to be invisible to AI assistants like ChatGPT, Claude, and Perplexity. This tool provides a quick, free audit to surface these issues, helping site owners regain AI-driven visibility without technical overhead.

Use cases

Website owners auditing their AI crawler access
SEO managers verifying AI visibility for content
Developers fine-tuning robots.txt for AI bots
Content creators ensuring their work is accessible to AI assistants
Marketing teams evaluating AI-driven search presence
E-commerce sites checking product visibility in AI answers

Audience

Developers
Product Managers
Content Creators
Business Users

Pros

Free and immediate results with no signup
Checks 13 major AI crawlers in one audit
Simple, user-friendly interface
Actionable insights via robots.txt and llms.txt guidance
Transparent scoring methodology

Cons

Limited to checking a single URL at a time
No ongoing monitoring or alerting
Score cached for 60 minutes, not real-time for fast changes
No API for programmatic or bulk use
Relies solely on robots.txt and live probe—does not check actual content indexing

Official website: https://isvisible.ai/

Canonical LambdaBase page: https://www.lambdabase.com/tools/isvisible-ai

← Directory

isvisible.ai

Free

• Updated Jul 22, 2026, 03:06 PM

isvisible.

Use Cases ▼

Website owners auditing their AI crawler access

SEO managers verifying AI visibility for content

Developers fine-tuning robots.txt for AI bots

Content creators ensuring their work is accessible to AI assistants

Marketing teams evaluating AI-driven search presence

E-commerce sites checking product visibility in AI answers

What Problem It Solves ▼

Key Features ▼

✓

Free and immediate results with no signup

✓

Checks 13 major AI crawlers in one audit

✓

Simple, user-friendly interface

✓

Actionable insights via robots.txt and llms.txt guidance

✓

Transparent scoring methodology

Overview

Full Description ▼

The tool categorizes crawlers into three groups: search engines (Googlebot, Bingbot), AI training crawlers (used for model training), and AI answer engines (real-time retrieval for AI assistants). It performs a live probe using each crawler's user agent to determine actual access, combining this with robots.txt rules to compute the score. The report also identifies whether an llms.txt file is present, which adds up to 20 points to the score.

Designed for website owners, SEO professionals, and developers, isvisible.ai highlights how AI platforms are becoming a new front door to the web. Blocking AI crawlers can prevent content from appearing in AI-generated answers, potentially reducing traffic and visibility. The tool provides actionable insights: a missing or misconfigured robots.txt can block desired crawlers, while a well-crafted llms.txt can improve AI understanding of a site.

The service is free, with no account required, and checks are cached for 60 minutes to balance freshness with server load. It includes a sample report on the homepage to illustrate the output, featuring a grade, breakdown by category, and transparent scoring methodology. A one-page PDF report download is also available, making it easy to share findings with teams or clients.