python

Quantiles Python SDK

The Quantiles Python SDK provides the components for building highly customized AI evaluations that run locally through the qt CLI and server.

Installation

uv add quantiles

Usage

Use the following code to build a custom evaluation with Python. To run it with qt run, configure it in a quantiles.toml file as described in the configuration guide.

from quantiles import JsonValue, WorkflowContext, emit, entrypoint, step, workflow


async def fetch_data() -> JsonValue:
  return {"status": 200}


async def handler(_input: JsonValue, ctx: WorkflowContext) -> JsonValue:
  result = await step(
    ctx,
    step_key="fetch-data",
    input_value={"url": "https://example.com"},
    execute=fetch_data,
  )
  await emit(ctx, "latency_ms", 50, "ms")
  return result


my_workflow = workflow("demo", handler)

if __name__ == "__main__":
  entrypoint(my_workflow)

Evaluation code executes locally. The qt server coordinates workflows, deduplicates steps, and manages durable state, stored outputs, observability records, and metrics.

Development

mise run test
mise run lint
mise run fmt-check
mise run typecheck