Episodic memory

Episodic memory captures concrete experiences: what happened, when, and in what sequence. It is the agent's logbook or diary.

For an agent, episodic memory might record what the user requested, which tools or integrations were used, whether the task succeeded or failed, how long it took, and any errors encountered. The "Building Long-Term Memory" article stresses that this is not raw conversation logs. Effective episodic memory is structured and summarized: you want the essence of what happened, not every token exchanged.

The "Practical Guide" gives a real example: in the author's system, episodic memory is the daily standup logs, where each agent writes a brief summary of what it did, what it found, and what it escalated. These accumulate into a searchable timeline. The practical value is large: agents can look back at yesterday's work, spot patterns, and avoid repeating failures. The article also notes that some tools struggle with episodic memory unless you explicitly force the behavior with instructions.

Two uses make episodic memory worth the effort. First, it lets the agent reference the past naturally ("Last time you asked about quarterly reports, I pulled data from your CRM and made a PDF. Same again?"). Second, it enables debugging: when an agent forgets context or makes an error, you can trace back through the history to see what happened.