OpenAI Python API Docs | dltHub

Build a OpenAI-to-database pipeline in Python using dlt with AI harness support for Claude Code, Cursor, and Codex.

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OpenAI is an AI platform providing REST API endpoints for models, chat completions, assistants, audio processing, and other generative AI tasks. The REST API base URL is https://api.openai.com/v1 and all requests require an 'Authorization' header with a Bearer token.

dlt is an open-source Python library that handles authentication, pagination, and schema evolution automatically. dlthub provides AI context files that enable code assistants to generate production-ready pipelines. Install with uv add "dlt[hub]" and start loading OpenAI data in under 10 minutes.


What data can I load from OpenAI?

Here are some of the endpoints you can load from OpenAI:

ResourceEndpointMethodData selectorDescription
assistants/assistantsGETdataReturns a list of assistants.
fine_tuning_jobs/fine_tuning/jobsGETdataList your organization's fine-tuning jobs.
vector_store_files/vector_stores/{vector_store_id}/filesGETdataReturns a list of vector store files.
models/modelsGETdataLists the currently available models.
threads/threadsGETdataList threads.

How do I authenticate with the OpenAI API?

The API requires an 'Authorization' HTTP header containing a Bearer token, which corresponds to your OpenAI API key or access token. The format is 'Authorization: Bearer OPENAI_API_KEY_OR_ACCESS_TOKEN'.

1. Get your credentials

To obtain an OpenAI API key, navigate to the OpenAI Platform dashboard at https://platform.openai.com/settings/organization/api-keys. Sign in with your OpenAI account, click on 'Create new secret key', provide a name for the key if prompted, and ensure you copy the key immediately as it will not be displayed again. Store this key securely, such as in an environment variable or a secrets management system.

2. Add them to .dlt/secrets.toml

[sources.openai_source] api_key = "sk-..."

dlt reads this automatically at runtime — never hardcode tokens in your pipeline script. For production environments, see setting up credentials with dlt for environment variable and vault-based options.


How do I set up and run the pipeline?

Set up a virtual environment and install dlt:

uv init uv add "dlt[hub]"

1. Install the dlt AI harness:

uv run dlthub ai init --agent <your-agent> # <agent>: claude | cursor | codex

This installs project rules, a secrets management skill, appropriate ignore files, and configures the dlt MCP server for your agent. Learn more →

2. Install the rest-api-pipeline toolkit:

uv run dlthub ai toolkit install rest-api-pipeline

This loads the skills and context about dlt the agent uses to build the pipeline iteratively, efficiently, and safely. The agent uses MCP tools to inspect credentials — it never needs to read your secrets.toml directly. Learn more →

3. Start LLM-assisted coding:

Use /find-source to load data from the OpenAI API into DuckDB.

The rest-api-pipeline toolkit takes over from here — it reads relevant API documentation, presents you with options for which endpoints to load, and follows a structured workflow to scaffold, debug, and validate the pipeline step by step.

4. Run the pipeline:

uv run python openai_pipeline.py

If everything is configured correctly, you'll see output like this:

Pipeline openai_pipeline load step completed in 0.26 seconds 1 load package(s) were loaded to destination duckdb and into dataset openai_data The duckdb destination used duckdb:/openai.duckdb location to store data Load package 1749667187.541553 is LOADED and contains no failed jobs

Inspect your pipeline and data:

uv run dlthub show

This opens the Pipeline Dashboard where you can verify pipeline state, load metrics, schema (tables, columns, types), and query the loaded data directly.


Python pipeline example

This example loads /assistants and /models from the OpenAI API into DuckDB. It mirrors the endpoint and data selector configuration from the table above:

import dlt from dlt.sources.rest_api import RESTAPIConfig, rest_api_resources @dlt.source def openai_source(api_key=dlt.secrets.value): config: RESTAPIConfig = { "client": { "base_url": "https://api.openai.com/v1", "auth": {"type": "bearer", "token": api_key}, }, "resources": [ {"name": "assistants", "endpoint": {"path": "assistants", "data_selector": "data"}}, {"name": "fine_tuning_jobs", "endpoint": {"path": "fine_tuning/jobs", "data_selector": "data"}} ], } yield from rest_api_resources(config) def get_data() -> None: pipeline = dlt.pipeline( pipeline_name="openai_pipeline", destination="duckdb", dataset_name="openai_data", ) load_info = pipeline.run(openai_source()) print(load_info)

To add more endpoints, append entries from the resource table to the "resources" list using the same name, path, and data_selector pattern.


How do I query the loaded data?

Once the pipeline runs, dlt creates one table per resource. You can query with Python or SQL.

Python (pandas DataFrame):

import dlt data = dlt.pipeline("openai_pipeline").dataset() sessions_df = data.assistants.df() print(sessions_df.head())

SQL (DuckDB example):

SELECT * FROM openai_data.assistants LIMIT 10;

In a marimo or Jupyter notebook:

import dlt data = dlt.pipeline("openai_pipeline").dataset() data.assistants.df().head()

See how to explore your data in marimo Notebooks and how to query your data in Python with dataset.


What destinations can I load OpenAI data to?

dlt supports loading into any of these destinations — only the destination parameter changes:

DestinationExample value
DuckDB (local, default)"duckdb"
PostgreSQL"postgres"
BigQuery"bigquery"
Snowflake"snowflake"
Redshift"redshift"
Databricks"databricks"
Filesystem (S3, GCS, Azure)"filesystem"

Change the destination in dlt.pipeline(destination="snowflake") and add credentials in .dlt/secrets.toml. See the full destinations list.


Next steps

Continue your data engineering journey with the other toolkits of the dltHub AI harness:

  • data-exploration — Build custom notebooks, charts, and dashboards for deeper analysis with marimo notebooks.
  • dlthub-platform — Deploy, schedule, and monitor your pipeline in production.
uv run dlthub ai toolkit install data-exploration uv run dlthub ai toolkit install dlthub-platform

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