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

# Agents

> No-code agents on your line — optional when you use the Messages API.

Agents are the product path for teams that want Comms to own free-form conversation: instructions, knowledge, tools, and human handoff.

You **do not** need an agent to use the Messages API. Keys talk to the line directly.

## When to use an agent

| Use an agent                            | Use the API only                      |
| --------------------------------------- | ------------------------------------- |
| Customers text free-form questions      | System events (receipts, status, ops) |
| You want Creed / knowledge without code | Your product already owns the copy    |
| Human handoff rules matter              | Fully automated pipelines             |

## Create an agent

1. Open [Create](https://comms.osis.co/dashboard/create) in the dashboard.
2. Describe the job in plain English.
3. Confirm the line and test from the inbox.

## Combined pattern

Many production systems use both:

1. Your backend sends operational messages via [Send a message](/messages-api/send-message).
2. An agent answers open-ended replies on the same line.
3. Inbox handoff brings a human in when needed.

See [How Comms works](/concepts/how-comms-works) and [Architecture](/concepts/architecture).