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

# Developer Overview

> A technical overview of the Tuner platform for developers. It covers the architecture, integration methods, and key technical concepts you need to know to get started.

## How Tuner Works

Tuner is a lightweight analytics platform. It works by receiving call data from your voice AI platform via webhooks or our API. This data is then processed, analyzed, and made available in your Tuner dashboard.

### Data Flow

<Steps>
  <Step title="Call Occurs">
    A user interacts with your voice agent.
  </Step>

  <Step title="Data Sent to Tuner">
    After the call ends, your platform sends the call data (transcript, metadata, etc.) to Tuner.
  </Step>

  <Step title="Data Processed">
    Tuner processes the data, runs [**evaluations**](/docs/agent-configurations/creating-custom-evaluations-evaluation-criteria), and checks for red flags.
  </Step>

  <Step title="Data Visualized">
    The processed data is visualized in your dashboard.
  </Step>
</Steps>

## Integration Methods

Tuner offers two primary integration methods:

<CardGroup cols={2}>
  <Card title="No-Code Integration" icon="plug">
    **Best For:** Supported platforms like Retell and Vapi. (We are always adding more tools)\
    **Time to Integrate:** \~5 minutes
  </Card>

  <Card title="API Integration" icon="code">
    **Best For:** Custom voice AI stacks. **Time to Integrate:** \~30 minutes
  </Card>
</CardGroup>

## Key Technical Concepts

Before you dive in, it is helpful to understand a few of Tuner's core technical concepts. These are covered in detail in the [**Key Concepts Overview**](/docs/core-concepts/key-concepts-overview), but here is a brief summary:

| Concept             | Description                                                                                                                                                                                                                                                                               |
| ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Evaluations**     | The process of analyzing a call against a set of criteria to determine its quality.                                                                                                                                                                                                       |
| **Guardrails**      | Rules that define what "bad" looks like. When breached, they trigger red flags or alerts.                                                                                                                                                                                                 |
| **Metrics**         | Quantitative measurements for every call, like talk time, silence duration, and sentiment.                                                                                                                                                                                                |
| **Red Flags**       | Tags triggered when a critical issue is detected, like a hallucination or broken flow.                                                                                                                                                                                                    |
| **Call Simulation** | Real test calls with your agent, inbound (Tuner dials your agent over SIP) or outbound (Tuner triggers your call API), evaluated against your production criteria. See [**Inbound SIP setup**](/docs/simulation/setup) and [**Outbound Simulation**](/docs/simulation/outbound/overview). |

***

### Next Steps

Now that you have a high-level understanding of how Tuner works, dive into our integration guides to connect your agent.

<CardGroup cols={2}>
  <Card title="Key Concepts Overview" icon="book-open" href="/docs/core-concepts/key-concepts-overview">
    An overview of the core concepts that power the Tuner platform.
  </Card>

  <Card title="Connecting to LiveKit" icon="puzzle-piece" href="/docs/api-and-integrations/connecting-to-livekit">
    Two-line SDK integration for LiveKit Agents.
  </Card>

  <Card title="Connecting to Pipecat" icon="puzzle-piece" href="/docs/api-and-integrations/connecting-to-pipecat">
    SDK integration for Pipecat pipelines.
  </Card>

  <Card title="Connecting to Dograh" icon="puzzle-piece" href="/docs/api-and-integrations/connecting-to-dograh">
    Tuner integration node inside your Dograh voice workflow.
  </Card>

  <Card title="Custom Integration" icon="code" href="/docs/api-and-integrations/custom-integration-with-the-tuner-api">
    Integrate your custom voice AI stack with the Tuner API.
  </Card>
</CardGroup>