---
title: "Comms Reference"
description: "Low-level comms reference: agent-facing tools, host-side comms/send surfaces, peer discovery, and ingress distinctions."
icon: "tower-broadcast"
---

Use this page when you need exact comms vocabulary and surface distinctions rather than the operational guide.

## Agent-facing comms tools

- `send_message`
- `send_request`
- `send_response`
- `peers`

## Host-side comms and ingress surfaces

- `comms/send`
- `comms/peers`
- `session/external_event`

## Core distinction

- agent-side comms tools are for the model inside a turn
- host-side comms/session ingress surfaces are for applications and operators

## See also

- [Comms guide](/guides/comms)
- [Examples: Comms](/examples/comms)
