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# Agents · Update an agent's configuration

PATCH https://kd-agents.simplified.com/api/v1/agents/{agent_id}
Content-Type: application/json

Partial update of an agent's own fields — title, model, temperature, prompt,
`extra`.

`extra` is replaced wholesale rather than merged, so a partial `extra`
silently drops the keys it omits. Read the current value before writing.

Attachments are not editable here; skills, toolkits and triggers each have
their own endpoints.


Reference: https://docs.simplified.com/api-reference/agents/management/update-agent

## Authentication

- `Authorization` header (required) (prefixed with ` Api-Key   `) — Header authentication of the form `Api-Key  <token>`
- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Path parameters

- `agent_id` (string, required) — Agent UUID or slug — both are accepted. From `agents_listAgents`.

### Body (application/json)

This endpoint expects an AgentWrite.

- `title` (string, optional) — Display name, e.g. "Weekly Report Writer".
- `description` (string, optional) — One line on what the agent is for. Shown in pickers.
- `model` (string, optional) — Provider-qualified model, e.g. `openai:gpt-4o-mini`. Omit to take the platform default rather than guessing a string.
- `system_prompt` (string, optional) — The agent's standing instructions. Durable behaviour belongs in skills instead — they are editable independently and do not require rewriting the prompt.
- `user_prompt` (string, optional) — Optional template applied to each incoming message.
- `temperature` (double, optional) — Sampling temperature. Defaults to 0.7.
- `status` (enum, optional) — `draft` until you are ready. Only `active` agents can be run, so a trigger on a draft agent fires and fails.
  - Allowed values: `draft`, `active`, `archived`
- `tools` (list of string, optional) — Built-in tool slugs. Write-only convenience — replaces the whole set, it does not append.
- `extra` (map from string to any, optional) — Agent-level flags. `allow_skill_override` is the one that matters: without it, built-in skills cannot be edited.

## Response

### 200

The updated agent.

## Errors

### 400 Bad Request Error

Validation error.

- `any`

### 404 Not Found Error

No such agent in this workspace.

- `any`

## Examples

**Request**

```json
{}
```

**Response**

```json
{}
```

**SDK Code**

```python
import requests

url = "https://kd-agents.simplified.com/api/v1/agents/agent_id"

payload = {}
headers = {
    "Authorization": "Api-Key  <apiKey>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://kd-agents.simplified.com/api/v1/agents/agent_id';
const options = {
  method: 'PATCH',
  headers: {Authorization: 'Api-Key  <apiKey>', 'Content-Type': 'application/json'},
  body: '{}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://kd-agents.simplified.com/api/v1/agents/agent_id"

	payload := strings.NewReader("{}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("Authorization", "Api-Key  <apiKey>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://kd-agents.simplified.com/api/v1/agents/agent_id")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Api-Key  <apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.patch("https://kd-agents.simplified.com/api/v1/agents/agent_id")
  .header("Authorization", "Api-Key  <apiKey>")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('PATCH', 'https://kd-agents.simplified.com/api/v1/agents/agent_id', [
  'body' => '{}',
  'headers' => [
    'Authorization' => 'Api-Key  <apiKey>',
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://kd-agents.simplified.com/api/v1/agents/agent_id");
var request = new RestRequest(Method.PATCH);
request.AddHeader("Authorization", "Api-Key  <apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Api-Key  <apiKey>",
  "Content-Type": "application/json"
]
let parameters = [] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://kd-agents.simplified.com/api/v1/agents/agent_id")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "PATCH"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```