By default, Cognis scopes search to the current session’s extracted memories. The cross_session parameter lets you search across all sessions for a user — useful for building comprehensive user profiles or recalling context from past conversations.
Usage
On Search
from lyzr import Cognis
cog = Cognis()
# Search across ALL sessions for this user
results = cog.search(
query="travel preferences",
owner_id="user_alice",
cross_session=True,
limit=10,
)
for r in results:
print(r.content, r.score)
On Get
# List memories from ALL sessions
memories = cog.get(
owner_id="user_alice",
cross_session=True,
limit=50,
)
On Context
from lyzr import CognisMessage
# Assemble context pulling from all sessions
context = cog.context(
current_messages=[CognisMessage(role="user", content="What have we discussed before?")],
owner_id="user_alice",
session_id="sess_current",
cross_session=True,
)
When to Use
| Scenario | cross_session |
|---|
| Same conversation, maintaining context | False (default) |
| New session, need past context | True |
| Building a user profile from all interactions | True |
| Support agent picking up a previous ticket | True |
Cross-session search is hosted-only. In the open-source lyzr-cognis package, extracted memories are already global to (owner_id, agent_id) — they automatically span sessions by design.
