Long-term memory

Find all long-term memory guides — enable memory on characters, manage user identity, use the memory API, and access the scripting reference.

Long-term memory (LTM) lets Convai characters retain facts about individual users across separate conversation sessions. This section covers how the system works, how to enable it, how to manage user identity and records, and the complete scripting API.

How long-term memory works Understand the session lifecycle, memory scoping, deduplication, and how facts are extracted and injected.

Long-term memory quick start Enable LTM for a character and verify cross-session recall in the Unity Editor in three steps.

Configure memory for a character Toggle LTM on or off per character via the Convai dashboard or the CharacterService scripting API.

End-user identity Understand how the SDK identifies users and how to supply your own authentication-backed ID.

Manage end-user records Browse and delete end-user records from the editor or via the EndUsersService scripting API.

Memory management API Programmatically list, add, retrieve, and delete memory records for a user–character pair.

Long-term memory scripting reference Complete method signatures, parameters, return types, and data models for all LTM APIs.

Long-term memory usage examples Four complete patterns: zero-config persistence, authenticated identity, memory seeding, and reset.

Troubleshoot long-term memory Diagnose why memories aren't persisting and resolve Memory Management API HTTP errors.

Next steps

Start with How long-term memory works for a conceptual overview, then follow Long-term memory quick start to get memory running in your scene.