# What Is Core

Core keeps the context behind AI-assisted work connected across files, decisions, people, projects, and AI tools. Agent checkpoints, drafts, decisions, tasks, skills, memory, and saved work can persist beyond a single session.

The key idea is simple: agents, models, and harnesses change. Useful context should not disappear when you move between connected tools.

Core gives external agents a place to read visible context and write private memory back through MCP. An agent can start by loading context the user is allowed to see, do work in its own harness, then record useful private outcomes, decisions, risks, tests, and follow-up tasks back into Core.

Core works with the tools and AI people already use, keeping approved context available as work changes. Teams can also add shared company material for agents to reference, but agents should only change shared material when explicitly asked.