Module userdata 

User-data state on disk. Settings, sessions catalog, memory, plugins, slash commands, MCP config - anything the agent reads or writes outside live SDK sessions.

Modules

catalog

Session catalog - filesystem-backed index of session transcripts the claude CLI persists under <config_dir>/projects/<project_key>/.

memory

Readers for the user’s CLAUDE.md (per-repo instructions) and the per-project auto-memory file (<config_dir>/projects/<project_key>/memory/MEMORY.md).

plugins

Plugin registry types + claude-CLI wrappers.

settings

Settings document accessors - read the three Claude Code configuration files. Reads return raw serde_json::Value documents; consumers own the merge / precedence semantics.

transcripts

Session transcripts on disk: the .jsonl files under the config dir’s projects/ tree, each directory named for the path the session ran in.