---
title: "BuildFacetInput"
description: "a facet to build from a seed"
section: concepts
address: /concepts/buildfacetinput
contract: 0476e35e6e275db5
---

# BuildFacetInput

a facet to build from a seed

[figure: BuildFacetInput 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 | harness |



## Fields


| field | type | required | note |
|---|---|---|---|
| `facet_kind` | [FacetKind](/concepts/facetkind) | yes |  |
| `seed` | `text` | yes |  |
| `again` | `bool` | no | when true, the same seed is built again as new work, for a presence that changed since the last build; without it the same seed under the same measure is the same work and returns the run already made |
| `asked_again_at` | `time` | no | set by the tool from the ask, so the run's key differs; never typed by hand |
| `scope` | [Scope](/concepts/scope) | yes |  |



## Routes that use it
- [`/v1/work/build_facet`](/reference/work/build_facet) takes it as input