Maybe Coding Agents Don't Need a Bigger Memory. Maybe They Need Continuity.

A practical reflection on why coding agents lose the thread between sessions, and why the repository itself is the right place to preserve it. I used to think the problem was memory. That was the obvious diagnosis. Every new coding-agent session started with the same ritual. Open the repository. Read the README. Inspect the project structure. Search for the files that looked important. Reconstruct the task. Guess which commands mattered. Ask again what had already been tried. Then do the actual work. Sometimes. Because a lot of the work was not work. It was orientation. A coding agent can have a large context window and still lose the operational thread. It can have chat history and still fail to know what happened in the last run. It can retrieve semantically similar notes from a vector store and still miss the one fact that mattered: this command already failed. the previous session stopped here. this file looked relevant, but it was a dead end. the validation was not actually run. One day I stopped thinking about the problem as "agent memory". That word was too broad. Too attractive. Too dangerous. Because once you say memory, the temptation is to build a bigger one. A bigger context window. A bigger note store. A bigger vector database. A bigger archive of everything the agent has ever seen, said, touched, generated, or vaguely implied. That sounds powerful, but it is also how you build a very expensive junk drawer. Context is not continuity Context is what the agent has available now. Continuity is what lets the next execution continue from what actually happened before. Those are not the same thing. Long context helps while a session is alive. It gives the model more text to work with. More files. More prior messages. More implementation details. More room. Although it is really useful it does not automatically produce continuity. When the session ends, gets compacted, moves to another tool, switches from one coding agent to another, or simply starts tomorrow