Query Fanout Viewer: Insight into the Retrieval Queries and Reference Sources of ChatGPT and Claude

The Query Fanout Viewer, open-sourced by LorenzoSchiff, is a browser bookmark tool that can real-time viewChatGPT and Claude's underlying search queries triggered when generating answers. It helps SEO and GEO practitioners understand AI retrieval behaviors, solve the "black box" problem of AI search, and provide key insights for content optimization.

When users ask ChatGPT or Claude a question, the AI decomposes the original question into multiple sub-queries (fan-out/grounding queries), but this process is invisible to ordinary users. For SEO and GEO practitioners, understanding how AI decomposes and expands queries is key to content optimization, yet there is no official way to view this on mainstream AI platforms.

Query Fanout Viewer is an open-source browser bookmark tool created by developer LorenzoSchiff. Its core value lies in transparently revealing the AI search process, allowing technical practitioners to observe and understand AI retrieval behavior patterns, and providing invaluable insights for content creators and digital marketers to optimize AI visibility.

The tool's core features include: 1. Real-time query capture: Intercept and display original variants, sub-themes, and verification queries sent by AI; 2. Referenced domain analysis: Show the distribution of search result domains, understand dominant websites, information concentration, and the frequency of competitor/own domains appearing; 3. Source concentration metrics: Quantitatively analyze the concentration of information sources, identify optimization opportunities and information cocoon risks.

Practical application scenarios include: 1. SEO strategy optimization: Adjust content to match AI query patterns, identify long-tail keywords, optimize content structure; 2. GEO research: Summarize AI problem decomposition patterns, identify industry query characteristics, develop optimization strategies; 3. Competitor intelligence: Understand the presence and description of competitors in AI queries, discover gaps where one's own brand is absent.

The tool exists as a browser bookmark with the following features: No installation required (save JS code as a bookmark), cross-platform compatibility (Chrome/Firefox/Safari, etc.), ready-to-use (activate by clicking the bookmark), and privacy-safe (open-source for review, no collection of personal data).

Current limitations: Dependent on browser JS injection, functionality is affected by AI platform interface updates, and cannot access AI internal decision logic. Future directions: Support more AI platforms like Perplexity/Gemini, provide historical trend analysis of query patterns, and integrate more SEO/GEO tools to form a complete workflow.

Although Query Fanout Viewer is small, it touches the core of search optimization in the AI era: understanding how AI "thinks" and "searches". For content creators and marketers who want to stay competitive, the transparency provided by such tools is the foundation for formulating effective strategies, and will become increasingly important as AI search develops.