---
title: "Reader"
description: "the durable work that moves units out of a place"
section: concepts
address: /concepts/reader
contract: 0476e35e6e275db5
---

# Reader

the durable work that moves units out of a place

[figure: Reader is a row at platform scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | row |
| scope | platform |
| key | the place it reads |
| store | postgres |
| family | kernel |



## Fields


| field | type | required | note |
|---|---|---|---|
| `place` | [Place](/concepts/place) | yes |  |
| `key_rule` | `text` | yes | its key comes from the unit |
| `deadline` | `duration` | yes |  |
| `capacity` | `count` | yes | it draws on a capacity |
| `beat` | [Beat](/concepts/beat) | no |  |



## Routes that use it
No route takes or returns Reader directly. The record holds it, and the objects that point at it reach it.