PostgresDb class.
Usage
Install dependencies:uv pip install agno openai ddgs sqlalchemy psycopg
Run PgVector
Install docker desktop and run PgVector on port 5532 using:docker run -d \
-e POSTGRES_DB=ai \
-e POSTGRES_USER=ai \
-e POSTGRES_PASSWORD=ai \
-e PGDATA=/var/lib/postgresql \
-v pgvolume:/var/lib/postgresql \
-p 5532:5432 \
--name pgvector \
agnohq/pgvector:18
postgres_for_team.py
"""
Run: `uv pip install agno openai ddgs sqlalchemy psycopg` to install the dependencies
"""
from typing import List
from agno.agent import Agent
from agno.db.postgres import PostgresDb
from agno.models.openai import OpenAIResponses
from agno.team import Team
from agno.tools.hackernews import HackerNewsTools
from agno.tools.websearch import WebSearchTools
from pydantic import BaseModel
db_url = "postgresql+psycopg://ai:ai@localhost:5532/ai"
db = PostgresDb(db_url=db_url)
class Article(BaseModel):
title: str
summary: str
reference_links: List[str]
hn_researcher = Agent(
name="HackerNews Researcher",
model=OpenAIResponses(id="gpt-5.2"),
role="Gets top stories from hackernews.",
tools=[HackerNewsTools()],
)
web_searcher = Agent(
name="Web Searcher",
model=OpenAIResponses(id="gpt-5.2"),
role="Searches the web for information on a topic",
tools=[WebSearchTools()],
add_datetime_to_context=True,
)
hn_team = Team(
name="HackerNews Team",
model=OpenAIResponses(id="gpt-5.2"),
members=[hn_researcher, web_searcher],
db=db,
instructions=[
"First, search hackernews for what the user is asking about.",
"Then, ask the web searcher to search for each story to get more information.",
"Finally, provide a thoughtful and engaging summary.",
],
output_schema=Article,
markdown=True,
show_members_responses=True,
)
hn_team.print_response("Write an article about the top 2 stories on hackernews")
Params
| Parameter | Type | Default | Description |
|---|---|---|---|
id | Optional[str] | - | The ID of the database instance. UUID by default. |
db_url | Optional[str] | - | The database URL to connect to. |
db_engine | Optional[Engine] | - | The SQLAlchemy database engine to use. |
db_schema | Optional[str] | - | The database schema to use. |
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 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 content. |
culture_table | Optional[str] | - | Name of the table to store cultural knowledge. |
traces_table | Optional[str] | - | Name of the table to store traces. |
spans_table | Optional[str] | - | Name of the table to store spans. |
versions_table | Optional[str] | - | Name of the table to store schema versions. |
components_table | Optional[str] | - | Name of the table to store components. |
component_configs_table | Optional[str] | - | Name of the table to store component configurations. |
component_links_table | Optional[str] | - | Name of the table to store links between components. |
learnings_table | Optional[str] | - | Name of the table to store learnings. |
schedules_table | Optional[str] | - | Name of the table to store cron schedules. |
schedule_runs_table | Optional[str] | - | Name of the table to store schedule run history. |
approvals_table | Optional[str] | - | Name of the table to store human approval requests. |
auth_tokens_table | Optional[str] | - | Name of the table to store OAuth tokens for external services. |
service_accounts_table | Optional[str] | - | Name of the table to store service accounts. |
mcp_oauth_clients_table | Optional[str] | - | Name of the table to store MCP OAuth client registrations. |
mcp_oauth_transactions_table | Optional[str] | - | Name of the table to store MCP OAuth transactions. |
mcp_oauth_codes_table | Optional[str] | - | Name of the table to store MCP OAuth authorization codes. |
mcp_oauth_refresh_tokens_table | Optional[str] | - | Name of the table to store MCP OAuth refresh tokens. |
mcp_oauth_keys_table | Optional[str] | - | Name of the table to store MCP OAuth signing keys. |
create_schema | bool | True | Whether to create the database schema if it doesn't exist. Set to False when the schema is managed externally. |