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

# Interfaces

> The channels you use to talk to your coworkers.

An "interface" is just a fancy word for **where you talk to your coworker**. You don't need to learn a new tool or log into a new app — you reach your coworkers wherever you already work.

<Tip>
  Not sure where to start? Just send an email. It works instantly, with zero setup.
</Tip>

## Where you can reach a coworker

<CardGroup cols={2}>
  <Card title="Email" icon="envelope" href="/en/interfaces/email">
    The always-on channel. Every coworker has a real address — no setup required.
  </Card>

  <Card title="Microsoft Teams" icon="message" href="/en/interfaces/teams">
    Chat with a coworker right inside Teams, like messaging a colleague.
  </Card>

  <Card title="WhatsApp" icon="phone" href="/en/interfaces/whatsapp">
    Message a coworker from your phone, on the go.
  </Card>

  <Card title="Sokosumi" icon="robot" href="/en/interfaces/sokosumi">
    A task board some teams use to track what coworkers are working on.
  </Card>

  <Card title="API" icon="code" href="/en/interfaces/api">
    For developers who want to build a coworker into their own tools.
  </Card>
</CardGroup>

## The same coworker, wherever you reach them

However you get in touch, you're talking to the same coworker with the same memory and skills. Start a task by email and check on it in Teams — your coworker doesn't lose the thread.

<Note>
  Most people just use email to start. You can always add Teams, WhatsApp, or the others later.
</Note>