External Data Sources

Databases

Connect to relational databases using a connection string. Cognee extracts table data and processes it into the knowledge graph.

import cognee

await cognee.serve()  # Connect to Cognee Cloud

# PostgreSQL
await cognee.add(
    "postgresql://user:pass@host:5432/mydb",
    dataset_name="postgres_data"
)
await cognee.cognify(datasets=["postgres_data"])

Supported databases:

Database	Connection string format
PostgreSQL	`postgresql://user:pass@host:5432/db`
MySQL	`mysql+pymysql://user:pass@host:3306/db`
SQLite	`sqlite:///path/to/database.db`
SQL Server	`mssql://user:pass@host:1433/db`

SaaS applications

Ingest data from SaaS tools using dlt source connectors. Install the relevant dlt extra and pass the source to cognee.add().

Slack

pip install "dlt[slack]"

from dlt.sources.slack import slack_source

source = slack_source(
    selected_channels=["general", "engineering"],
    start_date=datetime(2025, 1, 1),
)
await cognee.add(source, dataset_name="slack_data")

Extracts: channels, messages, users, threads.

Notion

pip install "dlt[notion]"

from dlt.sources.notion import notion_databases

source = notion_databases()
await cognee.add(source, dataset_name="notion_data")

Extracts: databases, pages, properties.

GitHub

pip install "dlt[github]"

from dlt.sources.github import github_reactions

source = github_reactions("your-org", "your-repo")
await cognee.add(source, dataset_name="github_data")

Extracts: issues, pull requests, comments, reactions.

HubSpot

pip install "dlt[hubspot]"

from dlt.sources.hubspot import hubspot

source = hubspot()
await cognee.add(source, dataset_name="hubspot_data")

Extracts: contacts, companies, deals, tickets.

Google Sheets

pip install "dlt[google_sheets]"

from dlt.sources.google_sheets import google_spreadsheet

source = google_spreadsheet(
    spreadsheet_url="https://docs.google.com/spreadsheets/d/...",
)
await cognee.add(source, dataset_name="sheets_data")

Extracts: rows and columns from specified sheets.

Getting Started

Local UI

Navigating the UI

Cloud Functionality

Connections

Reference

Databases

SaaS applications

File storage

​Databases

​SaaS applications

​File storage

Databases

SaaS applications

File storage