---
title: "Envelope"
description: "the shared envelope every event and every crossing carries"
section: concepts
address: /concepts/envelope
contract: 0476e35e6e275db5
---

# Envelope

the shared envelope every event and every crossing carries

[figure: Envelope is a value at none scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | value |
| scope | none |
| key | none |
| store | none |
| family | kernel |



## Fields


| field | type | required | note |
|---|---|---|---|
| `id` | `id` | yes |  |
| `kind` | `text` | yes |  |
| `version_of_shape` | `count` | yes |  |
| `at` | `time` | yes |  |
| `plane` | `one of tenant plane \| work plane \| shared \| tenant` | yes |  |
| `trace` | `id` | yes |  |
| `payload` | `json` | yes | the serialisation of the owning type the kind names |



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