Confident AI (DeepEval) Python API Docs | dltHub

Confident AI is a platform that provides a REST API for automating evaluations, managing datasets, prompt versions, and ingesting LLM traces. The REST API base URL is https://api.confident-ai.com and all requests require a 'CONFIDENT_API_KEY' header.

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 Confident AI (DeepEval) data in under 10 minutes.

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What data can I load from Confident AI (DeepEval)?

Here are some of the endpoints you can load from Confident AI (DeepEval):

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How do I authenticate with the Confident AI (DeepEval) API?

Authentication is performed by passing your Confident AI project API key in the 'CONFIDENT_API_KEY' request header.

1. Get your credentials

1. Create a free Confident AI account at https://app.confident-ai.com and sign in. 2. Open the relevant project and go to its Settings page. 3. Copy the value in the Project API Key box; use the project key for normal REST API access and DeepEval integration, not the organization key. 4. Send it on every REST request in the CONFIDENT_API_KEY HTTP header. For DeepEval, either export CONFIDENT_API_KEY in the environment or run deepeval login and paste the key when prompted. Organization-level keys are available from the organization name menu in the top-left: Settings contains the Organization Name, Organization ID, and Organization API Key. Use that key only for organization-scoped operations such as teams, billing, or multiple projects. Keep keys secret and store them in your secret manager or environment variables.

2. Add them to .dlt/secrets.toml

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[sources.confident_ai_deepeval_source]
api_key = "confident_us_your_project_api_key_here"

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.

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How do I set up and run the pipeline?

Set up a virtual environment and install dlt:

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uv init
uv add "dlt[hub]"

1. Install the dlt AI harness:

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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:

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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 Confident AI (DeepEval) 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:

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uv run python confident_ai_deepeval_pipeline.py

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

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

Inspect your pipeline and data:

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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.

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Python pipeline example

This example loads metric-collections and evaluate from the Confident AI (DeepEval) API into DuckDB. It mirrors the endpoint and data selector configuration from the table above:

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import dlt
from dlt.sources.rest_api import RESTAPIConfig, rest_api_resources

@dlt.source
def confident_ai_deepeval_source(api_key=dlt.secrets.value):
    config: RESTAPIConfig = {
        "client": {
            "base_url": "https://api.confident-ai.com",
            "auth": {"type": "api_key", "api_key": api_key, "name": "CONFIDENT_API_KEY"},
        },
        "resources": [
            {"name": "datasets", "endpoint": {"path": "v1/datasets/:alias"}},
            {"name": "prompts", "endpoint": {"path": "v1/prompts/:alias/versions/:version"}}
        ],
    }
    yield from rest_api_resources(config)


def get_data() -> None:
    pipeline = dlt.pipeline(
        pipeline_name="confident_ai_deepeval_pipeline",
        destination="duckdb",
        dataset_name="confident_ai_deepeval_data",
    )
    load_info = pipeline.run(confident_ai_deepeval_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.

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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):

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import dlt

data = dlt.pipeline("confident_ai_deepeval_pipeline").dataset()
sessions_df = data.datasets.df()
print(sessions_df.head())

SQL (DuckDB example):

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SELECT * FROM confident_ai_deepeval_data.datasets LIMIT 10;

In a marimo or Jupyter notebook:

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import dlt

data = dlt.pipeline("confident_ai_deepeval_pipeline").dataset()
data.datasets.df().head()

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

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What destinations can I load Confident AI (DeepEval) data to?

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

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

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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.

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uv run dlthub ai toolkit install data-exploration
uv run dlthub ai toolkit install dlthub-platform

• How to deploy a pipeline
• How to explore your data in marimo Notebooks
• How to query your data in Python with dataset
• Join the dlt community on Slack