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

# Development

> Essential tools, SDKs, and resources for building with Telnyx APIs and services.

## Build with confidence

From authentication utilities to multi-platform SDKs, this section mirrors the
hands-on developer resources from our classic docs so you can build, test, and
ship with Telnyx even faster.

## What you’ll find here

<Columns cols={2}>
  <Card icon="book-open" title="API fundamentals" href="/development/api-fundamentals/create-api-keys/index" arrow={true}>
    Learn how to create and secure API keys, handle webhooks, and stay within
    rate limits across every Telnyx service.

    <br />

    <strong>Dig into API fundamentals →</strong>
  </Card>

  <Card title="Server-side SDKs" icon="code" href="/development/sdk/node/index" arrow={true}>
    Official SDKs for Node.js, Python, PHP, Java, Ruby, and Go to simplify
    backend integrations and speed up prototyping.

    <br />

    <strong>Browse SDKs →</strong>
  </Card>
</Columns>

<Columns cols={2}>
  <Card title="WebRTC SDKs" icon="radio" href="/development/webrtc/js-sdk/quickstart/index" arrow={true}>
    Build voice and video experiences with JavaScript, React, iOS, and Android
    SDKs plus detailed class references.

    <br />

    <strong>Explore WebRTC →</strong>
  </Card>

  <Card title="Development tools" icon="wrench" href="/development/development-tools/postman-setup/index" arrow={true}>
    Level up your workflow with Postman collections, ngrok tunneling, and
    Node-RED recipes for rapid testing.

    <br />

    <strong>Get the toolkit →</strong>
  </Card>
</Columns>

<Columns cols={2}>
  <Card title="Testing & debugging" icon="bug" href="/development/webrtc/troubleshooting/detail-records" arrow={true}>
    Troubleshoot with call detail records, WebRTC debugging steps, and logging
    best practices.

    <br />

    <strong>Start debugging →</strong>
  </Card>

  <Card title="Migration guides" icon="shuffle" href="/development/migration/call-control-migration-guide/index" arrow={true}>
    Step-by-step playbooks for migrating messaging, Call Control, and Twilio
    workloads onto Telnyx.

    <br />

    <strong>Plan your migration →</strong>
  </Card>
</Columns>

## Working on AI agents?

Spin up local or remote MCP servers so your AI assistants can query Telnyx APIs
securely—check out the [MCP quickstarts](/development/mcp/local-mcp/index).

## Need product-specific guides?

Looking for AI, Voice, or Messaging docs? Explore our product tabs above.