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> For a complete documentation index, see https://www.comet.com/docs/opik/llms.txt.
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# Batch update spans

PATCH http://localhost:5173/api/v1/private/spans/batch
Content-Type: application/json

Update multiple spans

Reference: https://www.comet.com/docs/opik/reference/rest-api/spans/batch-update-spans

## Servers

- `http://localhost:5173/api` (Local server, default)
- `https://www.comet.com/opik/api` (Opik Cloud)

## Request

### Body (application/json)

This endpoint expects an object.

- `ids` (list of string, required) — List of span IDs to update (max 1000)
- `update` (object, required)
  - `trace_id` (string, required)
  - `project_name` (string, optional) — If null and project_id not specified, Default Project is assumed
  - `project_id` (string, optional) — If null and project_name not specified, Default Project is assumed
  - `parent_span_id` (string, optional)
  - `name` (string, optional)
  - `type` (enum, optional)
    - Allowed values: `general`, `tool`, `llm`, `guardrail`
  - `end_time` (datetime, optional)
  - `input` (map from string to any or list of object or string, optional)
  - `output` (map from string to any or list of object or string, optional)
  - `metadata` (map from string to any or list of object or string, optional)
  - `model` (string, optional)
  - `provider` (string, optional)
  - `tags` (list of string, optional) — Tags
  - `tags_to_add` (list of string, optional) — Tags to add
  - `tags_to_remove` (list of string, optional) — Tags to remove
  - `usage` (map from string to integer, optional)
  - `total_estimated_cost` (double, optional)
  - `error_info` (object, optional)
    - `exception_type` (string, required)
    - `traceback` (string, required)
    - `message` (string, optional)
  - `ttft` (double, optional)
  - `source` (enum, optional)
    - Allowed values: `sdk`, `experiment`, `playground`, `optimization`, `evaluator`
  - `environment` (string, optional)
- `merge_tags` (boolean, optional) — If true, merge tags with existing tags instead of replacing them. Default: false

## Response

### 204

No Content

## Errors

### 400 Bad Request Error

Bad Request

- `code` (integer, optional)
- `message` (string, optional)
- `details` (string, optional)

## Examples

**Request**

```json
{
  "ids": [
    "string"
  ],
  "update": {
    "trace_id": "string"
  }
}
```

**SDK Code**

```python
import requests

url = "http://localhost:5173/api/v1/private/spans/batch"

payload = {
    "ids": ["string"],
    "update": { "trace_id": "string" }
}
headers = {"Content-Type": "application/json"}

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

print(response.json())
```

```javascript
const url = 'http://localhost:5173/api/v1/private/spans/batch';
const options = {
  method: 'PATCH',
  headers: {'Content-Type': 'application/json'},
  body: '{"ids":["string"],"update":{"trace_id":"string"}}'
};

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 := "http://localhost:5173/api/v1/private/spans/batch"

	payload := strings.NewReader("{\n  \"ids\": [\n    \"string\"\n  ],\n  \"update\": {\n    \"trace_id\": \"string\"\n  }\n}")

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

	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("http://localhost:5173/api/v1/private/spans/batch")

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

request = Net::HTTP::Patch.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"ids\": [\n    \"string\"\n  ],\n  \"update\": {\n    \"trace_id\": \"string\"\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.patch("http://localhost:5173/api/v1/private/spans/batch")
  .header("Content-Type", "application/json")
  .body("{\n  \"ids\": [\n    \"string\"\n  ],\n  \"update\": {\n    \"trace_id\": \"string\"\n  }\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('PATCH', 'http://localhost:5173/api/v1/private/spans/batch', [
  'body' => '{
  "ids": [
    "string"
  ],
  "update": {
    "trace_id": "string"
  }
}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("http://localhost:5173/api/v1/private/spans/batch");
var request = new RestRequest(Method.PATCH);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"ids\": [\n    \"string\"\n  ],\n  \"update\": {\n    \"trace_id\": \"string\"\n  }\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Content-Type": "application/json"]
let parameters = [
  "ids": ["string"],
  "update": ["trace_id": "string"]
] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "http://localhost:5173/api/v1/private/spans/batch")! 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()
```