StableBrowse

Massive and StableBrowse cover complementary layers of the AI agent stack.

StableBrowse is a browser engine built specifically for AI agents, exposing each web page as a semantic, structured representation so agents can navigate, extract, and take actions through deterministic state-based workflows rather than screenshot or HTML parsing. It turns the web into a predictable execution layer where every agent step can be validated against real page state.

Massive provides the residential IP infrastructure layer underneath, enabling reliable large-scale access to websites through millions of opt-in residential devices across 195+ countries. This helps agent workflows operate more reliably in production environments where rate limits, IP reputation, or blocking can otherwise impact execution.

Used together, agents interact with websites in a structured, repeatable way while maintaining reliable access at production scale, addressing two major challenges in agent systems: brittle interaction logic and unreliable network access.