Letta Adapters¶

FactStore implementation backed by Letta archival passages.

Parameters:

Name	Type	Description	Default
`agent_id`	`str`	The Letta agent whose archival memory stores facts.	required
`api_key`	`str \| None`	Letta Cloud API key. Mutually exclusive with base_url.	`None`
`base_url`	`str \| None`	URL of a self-hosted Letta server.	`None`

HistoryStore implementation backed by Letta conversations.

Maintains a session_id -> conversation_id mapping. Creates a new Letta conversation on first add for each session.

Parameters:

Name	Type	Description	Default
`agent_id`	`str`	The Letta agent that owns the conversations.	required
`api_key`	`str \| None`	Letta Cloud API key. Mutually exclusive with base_url.	`None`
`base_url`	`str \| None`	URL of a self-hosted Letta server.	`None`

DocumentStore implementation backed by Letta archival passages.

Parameters:

Name	Type	Description	Default
`agent_id`	`str`	The Letta agent whose archival memory stores documents.	required
`api_key`	`str \| None`	Letta Cloud API key. Mutually exclusive with base_url.	`None`
`base_url`	`str \| None`	URL of a self-hosted Letta server.	`None`