Saturday, December 20, 2025

Show HN: AI Web Agents Enhanced by Semantic Geometry Visual Grounding (Amazon Demo)

Transforming AI Interaction with SentienceAPI

I’m Tony W, a solo founder on a mission to enhance how LLM agents interact with websites through SentienceAPI. While traditional LLMs excel in planning, they often struggle with real-world execution. Here’s how my innovative approach solves common issues:

  • Semantic Geometry-Based Visual Grounding: This layer minimizes raw HTML complexity, reducing a webpage to a grounded action space comprised only of visible, interactable elements.
  • Key Features:
    • Smaller Action Space: Reduces hallucinations and makes the system more reliable.
    • Deterministic Geometry: Ensures reproducible actions.
    • Cost-Effective: More economical than vision-only methods.

See it in action with my reference app, MotionDocs, which seamlessly navigates and executes tasks on Amazon Best Sellers. Check out the demo video.

I invite feedback from industry peers, especially those in agent development, RPA, or QA automation. Let’s shape the future of AI interaction together! Please share your thoughts!

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