> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://documentation.sayari.com/api/api-reference/project-entity-attributes/update-project-entity-attribute/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://documentation.sayari.com/_mcp/server.

# Update Project Entity Attribute

PUT https://api.sayari.com/v1/projects/{project_id}/entities/{project_entity_id}/attributes/{attribute_id}
Content-Type: application/json

Updates a specific attribute for a project entity.

Reference: https://documentation.sayari.com/api/api-reference/project-entity-attributes/update-project-entity-attribute

## Authentication

- OAuth2 — send the obtained token as `Authorization: Bearer <token>`

## Servers

- `https://api.sayari.com` (Production, default)
- `https://api.internal.sayari.com` (Dev)
- `https://api.uk.sayari.com` (Production_UK)

## Request

### Path parameters

- `project_id` (string, required)
- `project_entity_id` (string, required)
- `attribute_id` (string, required)

### Body (application/json)

This endpoint expects an UpdateProjectEntityAttributeRequest.

- `field` (string, required)
- `value` (string, required)
- `match_resolution` (boolean, required)

## Response

### 200

- `data` (UpdateProjectEntityAttributeResponseData, required)

## Errors

### 400 Bad Request

- `any`

### 401 Unauthorized

- `any`

### 404 Not Found

- `status` (integer, required)
- `message` (list of string, required)
- `success` (boolean, required)

### 405 Method Not Allowed

- `status` (integer, required)
- `message` (list of string, required)
- `success` (boolean, required)

### 429 Rate Limit Exceeded

- `any`

### 500 Internal Server Error

- `any`

## Types

### UpdateProjectEntityAttributeResponseData

- `id` (string, required)
- `field` (string, required)
- `value` (string, required)
- `match_resolution` (boolean, required)

## Examples

**Request**

```json
{
  "field": "name",
  "value": "updated name",
  "match_resolution": true
}
```

**Response**

```json
{
  "data": {
    "id": "xG8wYP",
    "field": "name",
    "value": "updated name",
    "match_resolution": true
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.sayari.com/v1/projects/V03eYM/entities/BG72YW/attributes/xG8wYP"

payload = {
    "field": "name",
    "value": "updated name",
    "match_resolution": True
}
headers = {
    "Authorization": "<token>.",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://api.sayari.com/v1/projects/V03eYM/entities/BG72YW/attributes/xG8wYP';
const options = {
  method: 'PUT',
  headers: {Authorization: '<token>.', 'Content-Type': 'application/json'},
  body: '{"field":"name","value":"updated name","match_resolution":true}'
};

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.sayari.com/v1/projects/V03eYM/entities/BG72YW/attributes/xG8wYP"

	payload := strings.NewReader("{\n  \"field\": \"name\",\n  \"value\": \"updated name\",\n  \"match_resolution\": true\n}")

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

	req.Header.Add("Authorization", "<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.sayari.com/v1/projects/V03eYM/entities/BG72YW/attributes/xG8wYP")

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

request = Net::HTTP::Put.new(url)
request["Authorization"] = '<token>.'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"field\": \"name\",\n  \"value\": \"updated name\",\n  \"match_resolution\": true\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.sayari.com/v1/projects/V03eYM/entities/BG72YW/attributes/xG8wYP")
  .header("Authorization", "<token>.")
  .header("Content-Type", "application/json")
  .body("{\n  \"field\": \"name\",\n  \"value\": \"updated name\",\n  \"match_resolution\": true\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('PUT', 'https://api.sayari.com/v1/projects/V03eYM/entities/BG72YW/attributes/xG8wYP', [
  'body' => '{
  "field": "name",
  "value": "updated name",
  "match_resolution": true
}',
  'headers' => [
    'Authorization' => '<token>.',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.sayari.com/v1/projects/V03eYM/entities/BG72YW/attributes/xG8wYP");
var request = new RestRequest(Method.PUT);
request.AddHeader("Authorization", "<token>.");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"field\": \"name\",\n  \"value\": \"updated name\",\n  \"match_resolution\": true\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "<token>.",
  "Content-Type": "application/json"
]
let parameters = [
  "field": "name",
  "value": "updated name",
  "match_resolution": true
] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.sayari.com/v1/projects/V03eYM/entities/BG72YW/attributes/xG8wYP")! 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()
```