> ## Documentation Index
> Fetch the complete documentation index at: https://docs.galileo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Hands-on Luna Studio SDK guides for each supported metric input category.

Use these tutorials to match the Luna Studio SDK workflow to your dataset shape and metric type.

## Pick the tutorial that matches your inputs

<CardGroup cols={2}>
  <Card title="LLM spans without RAG" icon="message" href="/luna-studio/sdk/tutorials/llm-spans-without-rag">
    Build a metric for standard LLM spans without retrieved context.
  </Card>

  <Card title="LLM spans with RAG" icon="book" href="/luna-studio/sdk/tutorials/llm-spans-with-rag">
    Train against span inputs that include retrieved context.
  </Card>

  <Card title="LLM spans with tools" icon="hammer" href="/luna-studio/sdk/tutorials/llm-spans-with-tools-agentic">
    Cover agentic traces that invoke tools during execution.
  </Card>

  <Card title="Retriever spans" icon="magnifying-glass" href="/luna-studio/sdk/tutorials/retriever-spans">
    Work with retrieval-only span inputs.
  </Card>

  <Card title="Trace input / output only" icon="route" href="/luna-studio/sdk/tutorials/trace-input-output-only">
    Start from simple trace-level inputs and outputs.
  </Card>

  <Card title="Using a preset metric" icon="sparkles" href="/luna-studio/sdk/tutorials/preset-metric">
    Adapt a Galileo preset metric to your own data.
  </Card>

  <Card title="Full traces" icon="diagram-project" href="/luna-studio/sdk/tutorials/full-traces">
    Cover complete traces with richer structure.
  </Card>

  <Card title="List of trace inputs / outputs only" icon="list" href="/luna-studio/sdk/tutorials/list-of-trace-inputs-outputs-only">
    Train on lists of trace input/output pairs.
  </Card>

  <Card title="Full sessions" icon="messages" href="/luna-studio/sdk/tutorials/full-sessions">
    Work with session-level inputs spanning multiple turns.
  </Card>
</CardGroup>