Tabstack

An API that extracts structured data from web pages, answers research questions with cited sources, and automates browser tasks in a single call, eliminating the need to manage LLMs, browsers, or pipelines. It returns clean Markdown, schema-matched JSON, or completed actions. The service targets developers and data teams at B2B companies building agents or data pipelines. Its differentiator is a zero-infrastructure, privacy-respecting approach that never trains on user data.

Key features

• Extract clean Markdown from any URL
• Return JSON matching a defined schema
• Get reasoned output from instructions
• Research agent with cited answers
• Stream results over SSE
• Automate browser tasks via API
• TypeScript, Python, and CLI SDKs