What is GPT-Crawler?
Manually compiling information from websites to train a custom GPT or AI assistant can be a slow and painstaking process. You need the right data, structured correctly, just to get started. GPT Crawler, an open-source tool from the BuilderIO team, streamlines this entirely. It allows you to crawl specified web pages, extract the relevant content, and generate a structured knowledge file (output.json) ready for upload to OpenAI. Now you can efficiently transform existing web content into a focused knowledge base for your custom AI projects.
Key Features
🌐 Targeted Website Crawling: Provide a starting URL and define matching patterns (
match) to guide the crawler. It systematically navigates through the linked pages you care about.✂️ Precise Content Extraction: Use CSS selectors (
selector) to pinpoint the exact content areas (like main articles, documentation sections) you want to include, filtering out noise like headers, footers, and ads.⚙️ Flexible Configuration: Tailor the crawl depth (
maxPagesToCrawl), define resource types to exclude (resourceExclusions), set maximum output file sizes (maxFileSize), or limit by token count (maxTokens) directly within theconfig.tsfile.📄 Structured Knowledge Output: Automatically generates an
output.jsonfile containing the extracted text, formatted for easy ingestion by OpenAI's custom GPT or Assistant creation tools.🚀 Multiple Execution Methods: Run GPT Crawler directly from your local machine, deploy it within a Docker container for isolated environments, or integrate it into your applications by running it as an API server (Express JS).
📦 Open Source & Community Driven: Available on GitHub under an open-source license, allowing you to inspect the code, contribute improvements, and use it freely.
Use Cases
Create a Product Support Assistant: Point GPT Crawler at your product's documentation site (e.g.,
docs.yourproduct.com). Use the generatedoutput.jsonto build a custom GPT that can instantly answer user questions based only on your official docs, reducing support tickets and improving user self-service.Develop an Internal Knowledge Bot: Crawl your company's internal wiki or knowledge base (like Confluence or SharePoint sites). Create an AI assistant that helps employees quickly find information on company policies, project details, or standard operating procedures, directly within their workflow.
Build a Specialized Research Aggregator: Target a collection of specific industry blogs, news sites, or research portals relevant to your field. Use GPT Crawler to gather the latest articles and findings, then build a custom GPT to help you query, summarize, and stay updated on developments within that niche.
Conclusion
GPT Crawler provides a practical, developer-friendly solution for bridging the gap between web content and custom AI. Its focused crawling capabilities, combined with granular configuration options and flexible deployment methods, make it a valuable tool for anyone looking to build specialized GPTs or AI assistants grounded in specific online information. As an open-source project, it offers transparency and the potential for community-driven enhancements, simplifying a crucial step in the custom AI development workflow.
More information on GPT-Crawler
Launched
Pricing Model
Free
Starting Price
Global Rank
Follow
Month Visit
<5k
Tech used
GPT-Crawler was manually vetted by our editorial team and was first featured on 2025-03-30.
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