---
title: "act: raise need"
description: "a cell's key, the reason and the value to the cell, wanted"
section: reference
address: /reference/act/raise_need
contract: 0476e35e6e275db5
---
# act: raise need
a cell's key, the reason and the value to the cell, wanted
[figure: The caller sends RaiseNeedInput to /v1/act/raise_need. The platform returns a card whose body is DemandCell.]
POST/v1/act/raise_need
Raise a need. The call needs the brand rung under a token with the act grant, and it is served by the platform.
The route takes [RaiseNeedInput](/concepts/raiseneedinput) and returns a card whose body is [DemandCell](/concepts/demandcell).
## Request body
The request body is [RaiseNeedInput](/concepts/raiseneedinput).
| field | type | required | note |
|---|---|---|---|
| `source` | [Source](/concepts/source) | yes | |
| `entities` | [Predicate](/concepts/predicate) | yes | |
| `bucket` | [Window](/concepts/window) | yes | |
| `fields` | `[text]` | yes | |
| `value` | `share` | yes | |
## Response
The route returns a card whose body is [DemandCell](/concepts/demandcell). Every card ends with a foot that states the basis of each number, the scope of the call, and the time when the facts were true.
## Headers
| header | required | meaning |
|---|---|---|
| `Scale-Scope` | yes | the scope the call runs in: tenant/, then /brand/, then /strategy/ |
| `Scale-As-True-On` | no | the date the facts must have been true on; defaults to now |
| `Scale-As-Known-On` | no | the date the facts must have been known on; defaults to now |
| `Scale-Key` | no | for a change, the key made from the input; a repeat under the same key returns the unit held and writes nothing |
A caller needs the brand rung and a token with the act grant. The platform serves this route.
## Example
The example sends the smallest body that RaiseNeedInput allows. The build validates it against the schema of RaiseNeedInput.
Example
```sh
curl -X POST https://api.scaleintelligence.co/v1/act/raise_need \
-H "Scale-Key: $SCALE_KEY" -H "Scale-Scope: tenant/" \
-H "content-type: application/json" \
-d '{ "source": "…", "entities": { "tree": { "form": "group" }, "population": "…", "tree_hash": "…", "register_hash": "…", "compiler_version": "…", "comparator_versions": {} }, "bucket": { "from": "…", "to": "…" }, "fields": [], "value": 0 }'
```
```typescript
import { client } from "@scale/sdk";
const answer = await client.act.raise_need({
"source": "…",
"entities": {
"tree": {
"form": "group"
},
"population": "…",
"tree_hash": "…",
"register_hash": "…",
"compiler_version": "…",
"comparator_versions": {}
},
"bucket": {
"from": "…",
"to": "…"
},
"fields": [],
"value": 0
});
// answer.body is a DemandCell. answer.foot holds the basis, the scope and the time.
```
```python
import requests
answer = requests.post("https://api.scaleintelligence.co/v1/act/raise_need",
headers={"Scale-Key": KEY, "Scale-Scope": "tenant/"},
json={
"source": "…",
"entities": {
"tree": {
"form": "group"
},
"population": "…",
"tree_hash": "…",
"register_hash": "…",
"compiler_version": "…",
"comparator_versions": {}
},
"bucket": {
"from": "…",
"to": "…"
},
"fields": [],
"value": 0
}).json()
```
```rust
let answer: Card = client.post("https://api.scaleintelligence.co/v1/act/raise_need")
.header("Scale-Key", key).header("Scale-Scope", "tenant/")
.json(&RaiseNeedInput { /* the fields of the page */ }).send().await?.json().await?;
```