What is Dex by Thirdlayer?
Dex is a self-driving workspace designed for operators who need to manage complex workflows across multiple tools. It functions as an AI with full operational memory, ingesting every datapoint from your workspace—messages, meetings, deal updates, and workflow events—and structuring them into a compounding context that enables high-leverage work. The core of Dex is a dynamic knowledge graph that serves as the organizational record, capturing entities, relationships, timelines, and dependencies to create a living source of truth. Complementing this is the Knowledge Manual, which evolves with your priorities, open loops, SOPs, and operating principles, automatically maintained yet explicitly editable.
Dex automates actions across Gmail, Slack, CRM, and over 20 other tools through event-triggered or scheduled agents. It operates directly in your browser, navigating tabs, filling forms, and completing tasks where context already resides. With its SDK and MCP, Dex extends operational context to any agent, tool, or workflow, eliminating context switching. The system is proactive and self-improving: it learns from corrections, approvals, and repeated patterns, becoming sharper over time. It reasons 24/7 over new data, maintains your knowledge base, spots emerging patterns, and keeps your operational context current even when you're away. Weekly, it generates custom automations and skill suggestions tailored to your repeated workflows.
Key use cases include streamlining operations for fast-growing teams, reducing manual data entry, and ensuring no critical context is lost. Technical highlights include browser-first architecture, real-time synchronization, and a graph-based memory that goes beyond simple retrieval to support reasoning across past precedent and relationships. Dex is ideal for operators in sales, project management, and customer success who need a second brain for work that requires judgment and continuity. Pricing is subscription-based with a free trial available.
Use Cases
Key Features
AI operational memory dynamic knowledge graph automated multi tool actions proactive self improvement context aware browser automation SDK and MCP integration event triggered agents compounding context managementWho is it for?
operators, workflow managers, sales teams, engineering leads, project managers, IT operations
