---
title: "act: watch site"
description: "a `WatchSiteInput` to the watch, ready or not ready; for a preview, the pages it would read and the changes it would have raised over the window"
section: reference
address: /reference/act/watch_site
contract: 0476e35e6e275db5
---
# act: watch site
a `WatchSiteInput` to the watch, ready or not ready; for a preview, the pages it would read and the changes it would have raised over the window
[figure: The caller sends WatchSiteInput to /v1/act/watch_site. The platform returns a card whose body is SiteWatch.]
POST/v1/act/watch_site
Watch a site. The call needs the brand rung under a token with the act grant, and it is served by the platform.
The route takes [WatchSiteInput](/concepts/watchsiteinput) and returns a card whose body is [SiteWatch](/concepts/sitewatch).
## Request body
The request body is [WatchSiteInput](/concepts/watchsiteinput).
| field | type | required | note |
|---|---|---|---|
| `watch` | [SiteWatch](/concepts/sitewatch) | yes | |
| `flow` | `one of write \| preview \| arm \| disarm` | yes | |
## Response
The route returns a card whose body is [SiteWatch](/concepts/sitewatch). 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 WatchSiteInput allows. The build validates it against the schema of WatchSiteInput.
Example
```sh
curl -X POST https://api.scaleintelligence.co/v1/act/watch_site \
-H "Scale-Key: $SCALE_KEY" -H "Scale-Scope: tenant/" \
-H "content-type: application/json" \
-d '{ "watch": { "site": "…", "page_patterns": [], "use_sitemap": false, "cadence": "…", "conditions": { "tree": { "form": "group" }, "population": "…", "tree_hash": "…", "register_hash": "…", "compiler_version": "…", "comparator_versions": {} }, "channels": [], "state": { "ready": false, "since": "…" } }, "flow": "write" }'
```
```typescript
import { client } from "@scale/sdk";
const answer = await client.act.watch_site({
"watch": {
"site": "…",
"page_patterns": [],
"use_sitemap": false,
"cadence": "…",
"conditions": {
"tree": {
"form": "group"
},
"population": "…",
"tree_hash": "…",
"register_hash": "…",
"compiler_version": "…",
"comparator_versions": {}
},
"channels": [],
"state": {
"ready": false,
"since": "…"
}
},
"flow": "write"
});
// answer.body is a SiteWatch. answer.foot holds the basis, the scope and the time.
```
```python
import requests
answer = requests.post("https://api.scaleintelligence.co/v1/act/watch_site",
headers={"Scale-Key": KEY, "Scale-Scope": "tenant/"},
json={
"watch": {
"site": "…",
"page_patterns": [],
"use_sitemap": false,
"cadence": "…",
"conditions": {
"tree": {
"form": "group"
},
"population": "…",
"tree_hash": "…",
"register_hash": "…",
"compiler_version": "…",
"comparator_versions": {}
},
"channels": [],
"state": {
"ready": false,
"since": "…"
}
},
"flow": "write"
}).json()
```
```rust
let answer: Card = client.post("https://api.scaleintelligence.co/v1/act/watch_site")
.header("Scale-Key", key).header("Scale-Scope", "tenant/")
.json(&WatchSiteInput { /* the fields of the page */ }).send().await?.json().await?;
```