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

# Overview

> References used across every Modulus API

These resources apply across all Modulus APIs, grouped by where you reach for them.

## Before you build

<CardGroup cols={2}>
  <Card title="Base URLs" icon="link" href="/docs/base-urls">
    Every API's sandbox host in one place. Also in Get Started.
  </Card>

  <Card title="Glossary" icon="book" href="/docs/glossary">
    Terms, identifiers, and Philippine local context.
  </Card>
</CardGroup>

## During integration

<CardGroup cols={2}>
  <Card title="Testing" icon="vial" href="/docs/testing">
    Sandbox test data, cards, and scenarios for every API.
  </Card>

  <Card title="Errors" icon="triangle-exclamation" href="/docs/errors">
    Error formats and the code catalog per API.
  </Card>

  <Card title="Build with AI" icon="robot" href="/docs/build-with-ai">
    Scaffold an integration by pointing an AI agent at these docs.
  </Card>
</CardGroup>

## Before you launch

<Card title="Go-live" icon="rocket" href="/docs/production">
  The cross-product go-live checklist.
</Card>

## Keeping up

<Card title="Changelog" icon="clock-rotate-left" href="/changelog">
  What changed and whether action is required.
</Card>