> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://devin.ferndocs.com/api-reference/v-3/replace-session-tags/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://devin.ferndocs.com/_mcp/server.

# Replace session tags

PUT https://api.devin.ai/v3/organizations/{org_id}/sessions/{devin_id}/tags
Content-Type: application/json

Replace all tags on a session.

Reference: https://devin.ferndocs.com/api-reference/v-3/replace-account-session-tags

## Authentication

- `Authorization` header (bearer token, required) — Personal API Key (apk_user_*) or Service API Key (apk_*)

## Request

### Path parameters

- `devin_id` (string, required) — Devin session ID (prefix: devin-)
- `org_id` (string, required) — Organization ID (prefix: org-)

### Body (application/json)

This endpoint expects a SessionTagsUpdateRequest.

- `tags` (list of string, required)

## Response

### 200

Successful Response

- `tags` (list of string, required)

## Errors

### 422 Unprocessable Entity Error

Validation Error

- `detail` (list of ValidationError, optional)

## Types

### ValidationError

- `loc` (list of ValidationErrorLocItems, required)
- `msg` (string, required)
- `type` (string, required)

### ValidationErrorLocItems

## Examples

**Request**

```json
{
  "tags": [
    "urgent",
    "client-meeting",
    "Q2-review"
  ]
}
```

**Response**

```json
{
  "tags": [
    "urgent",
    "client-meeting",
    "Q2-review"
  ]
}
```

**SDK Code**

```python
import requests

url = "https://api.devin.ai/v3/organizations/org-abc123def456/sessions/devin-abc123def456/tags"

payload = { "tags": ["urgent", "client-meeting", "Q2-review"] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://api.devin.ai/v3/organizations/org-abc123def456/sessions/devin-abc123def456/tags';
const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{"tags":["urgent","client-meeting","Q2-review"]}'
};

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://api.devin.ai/v3/organizations/org-abc123def456/sessions/devin-abc123def456/tags"

	payload := strings.NewReader("{\n  \"tags\": [\n    \"urgent\",\n    \"client-meeting\",\n    \"Q2-review\"\n  ]\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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://api.devin.ai/v3/organizations/org-abc123def456/sessions/devin-abc123def456/tags")

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

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"tags\": [\n    \"urgent\",\n    \"client-meeting\",\n    \"Q2-review\"\n  ]\n}"

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.put("https://api.devin.ai/v3/organizations/org-abc123def456/sessions/devin-abc123def456/tags")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"tags\": [\n    \"urgent\",\n    \"client-meeting\",\n    \"Q2-review\"\n  ]\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('PUT', 'https://api.devin.ai/v3/organizations/org-abc123def456/sessions/devin-abc123def456/tags', [
  'body' => '{
  "tags": [
    "urgent",
    "client-meeting",
    "Q2-review"
  ]
}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.devin.ai/v3/organizations/org-abc123def456/sessions/devin-abc123def456/tags");
var request = new RestRequest(Method.PUT);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"tags\": [\n    \"urgent\",\n    \"client-meeting\",\n    \"Q2-review\"\n  ]\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = ["tags": ["urgent", "client-meeting", "Q2-review"]] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.devin.ai/v3/organizations/org-abc123def456/sessions/devin-abc123def456/tags")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "PUT"
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()
```