Async Sqlite for Team
Kern supports using Sqlite asynchronously as a storage backend for Teams, with the AsyncSqliteDb class.
Usage
You need to provide either db_url, db_file or db_engine. The following example uses db_file.
1"""2Run: `uv pip install openai newspaper4k lxml_html_clean kern-ai sqlalchemy aiosqlite` to install the dependencies3"""4import asyncio5from typing import List67from kern.agent import Agent8from kern.db.sqlite import AsyncSqliteDb9from kern.models.openai import OpenAIResponses10from kern.team import Team11from kern.tools.hackernews import HackerNewsTools12from kern.tools.hackernews import HackerNewsTools13from pydantic import BaseModel1415# Initialize AsyncSqliteDb with a database file16db = AsyncSqliteDb(db_file="team_storage.db")1718class Article(BaseModel):19 title: str20 summary: str21 reference_links: List[str]2223hn_researcher = Agent(24 name="HackerNews Researcher",25 model=OpenAIResponses(id="gpt-5.2"),26 role="Gets top stories from hackernews.",27 tools=[HackerNewsTools()],28)2930web_searcher = Agent(31 name="Web Searcher",32 model=OpenAIResponses(id="gpt-5.2"),33 role="Searches the web for information on a topic",34 tools=[HackerNewsTools()],35 add_datetime_to_context=True,36)3738hn_team = Team(39 name="HackerNews Team",40 model=OpenAIResponses(id="gpt-5.2"),41 members=[hn_researcher, web_searcher],42 db=db,43 instructions=[44 "First, search hackernews for what the user is asking about.",45 "Then, ask the web searcher to search for each story to get more information.",46 "Finally, provide a thoughtful and engaging summary.",47 ],48 output_schema=Article,49 markdown=True,50 show_members_responses=True,51)5253asyncio.run(54 hn_team.aprint_response("Write an article about the top 2 stories on hackernews")55)Params
| Parameter | Type | Default | Description |
|---|---|---|---|
db_engine | Optional[Engine] | - | The SQLAlchemy database engine to use. |
db_url | Optional[str] | - | The database URL to connect to. |
db_file | Optional[str] | - | The database file to connect to. |
session_table | Optional[str] | - | Name of the table to store Agent, Team and Workflow sessions. |
memory_table | Optional[str] | - | Name of the table to store user memories. |
metrics_table | Optional[str] | - | Name of the table to store metrics. |
eval_table | Optional[str] | - | Name of the table to store evaluation runs data. |
knowledge_table | Optional[str] | - | Name of the table to store knowledge documents data. |
traces_table | Optional[str] | - | Name of the table to store traces. |
spans_table | Optional[str] | - | Name of the table to store spans. |