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# Upload cohort

POST https://apps.sarvam.ai/api/scheduling/v1/orgs/{org_id}/workspaces/{workspace_id}/campaigns/{campaign_id}/cohorts/upload
Content-Type: multipart/form-data

Upload a cohort as multipart form-data with three fields:

- `name` — Cohort name (1–50 characters)
- `cohort_file` — CSV file with a header row and at least one data row
- `cohort_transformation_file` — JSON file that maps CSV columns to phone numbers and agent variables

Reference: https://docs.sarvam.ai/voice-agents/api/campaigns/cohorts/upload

## Request

### Path parameters

- `org_id` (string, required)
- `workspace_id` (string, required)
- `campaign_id` (string, required)

### Headers

- `X-API-Key` (string, required) — Your workspace API key.

### Body (multipart/form-data)

This endpoint expects a multipart form with multiple files.

- `name` (string, required) — Name of the resource
- `cohort_file` (file, required) — CSV file containing the cohort data
- `cohort_transformation_file` (file, required) — JSON file defining how CSV columns map to agent variables

## Response

### 200

Successful Response

- `name` (string, required) — Name of the resource
- `cohort_id` (string, required) — Unique identifier for the cohort
- `status` (enum, required) — Current status
  - Allowed values: `processing`, `completed`, `failed`
- `source_type` (enum, required) — How the cohort was uploaded
  - Allowed values: `pre_signed_url`, `file_upload`
- `created_by` (string, required) — User who created this resource
- `created_at` (datetime, required) — Timestamp when the resource was created (ISO 8601)
- `updated_at` (datetime, required) — Timestamp when the resource was last updated (ISO 8601)
- `result` (CohortResult, optional, nullable) — Processing result with record counts
- `updated_by` (string, optional, nullable) — User who last updated this resource

## Errors

### 422 Unprocessable Entity Error

Validation Error

- `error` (ErrorBody, required) — Details of the error that occurred.

## Types

### CohortResult

Processing result showing how many records were valid vs rejected.

- `total_records` (integer, required) — Total number of records in the uploaded file
- `valid_records` (integer, required) — Number of records that passed validation
- `rejected_records` (integer, required) — Number of records that failed validation

### ErrorBody

Details of the error that occurred.

- `code` (string, required) — A service-specific error code.
- `message` (string, required) — A human-readable description of the error.

## Examples

**Request**

```json
{
  "cohort_file": "<file: string>",
  "cohort_transformation_file": "<file: string>",
  "name": "April Batch 1"
}
```

**Response**

```json
{
  "name": "April Batch 1",
  "cohort_id": "coh-x1y2z3",
  "status": "completed",
  "source_type": "file_upload",
  "created_by": "user@company.com",
  "created_at": "2026-04-01T09:00:00Z",
  "updated_at": "2026-04-01T09:05:00Z",
  "result": {
    "total_records": 10000,
    "valid_records": 9750,
    "rejected_records": 250
  },
  "updated_by": null
}
```

**SDK Code**

```python
import requests

url = "https://apps.sarvam.ai/api/scheduling/v1/orgs/org_id/workspaces/workspace_id/campaigns/campaign_id/cohorts/upload"

files = {
    "cohort_file": "open('string', 'rb')",
    "cohort_transformation_file": "open('string', 'rb')"
}
payload = { "name": "April Batch 1" }
headers = {"X-API-Key": "<your-api-key>"}

response = requests.post(url, data=payload, files=files, headers=headers)

print(response.json())
```

```javascript
const url = 'https://apps.sarvam.ai/api/scheduling/v1/orgs/org_id/workspaces/workspace_id/campaigns/campaign_id/cohorts/upload';
const form = new FormData();
form.append('cohort_file', 'string');
form.append('cohort_transformation_file', 'string');
form.append('name', 'April Batch 1');

const options = {method: 'POST', headers: {'X-API-Key': '<your-api-key>'}};

options.body = form;

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://apps.sarvam.ai/api/scheduling/v1/orgs/org_id/workspaces/workspace_id/campaigns/campaign_id/cohorts/upload"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cohort_file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cohort_transformation_file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"name\"\r\n\r\nApril Batch 1\r\n-----011000010111000001101001--\r\n")

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

	req.Header.Add("X-API-Key", "<your-api-key>")

	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://apps.sarvam.ai/api/scheduling/v1/orgs/org_id/workspaces/workspace_id/campaigns/campaign_id/cohorts/upload")

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

request = Net::HTTP::Post.new(url)
request["X-API-Key"] = '<your-api-key>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cohort_file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cohort_transformation_file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"name\"\r\n\r\nApril Batch 1\r\n-----011000010111000001101001--\r\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.post("https://apps.sarvam.ai/api/scheduling/v1/orgs/org_id/workspaces/workspace_id/campaigns/campaign_id/cohorts/upload")
  .header("X-API-Key", "<your-api-key>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cohort_file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cohort_transformation_file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"name\"\r\n\r\nApril Batch 1\r\n-----011000010111000001101001--\r\n")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://apps.sarvam.ai/api/scheduling/v1/orgs/org_id/workspaces/workspace_id/campaigns/campaign_id/cohorts/upload', [
  'multipart' => [
    [
        'name' => 'cohort_file',
        'filename' => 'string',
        'contents' => null
    ],
    [
        'name' => 'cohort_transformation_file',
        'filename' => 'string',
        'contents' => null
    ],
    [
        'name' => 'name',
        'contents' => 'April Batch 1'
    ]
  ]
  'headers' => [
    'X-API-Key' => '<your-api-key>',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://apps.sarvam.ai/api/scheduling/v1/orgs/org_id/workspaces/workspace_id/campaigns/campaign_id/cohorts/upload");
var request = new RestRequest(Method.POST);
request.AddHeader("X-API-Key", "<your-api-key>");
request.AddParameter("undefined", "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cohort_file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cohort_transformation_file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"name\"\r\n\r\nApril Batch 1\r\n-----011000010111000001101001--\r\n", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["X-API-Key": "<your-api-key>"]
let parameters = [
  [
    "name": "cohort_file",
    "fileName": "string"
  ],
  [
    "name": "cohort_transformation_file",
    "fileName": "string"
  ],
  [
    "name": "name",
    "value": "April Batch 1"
  ]
]

let boundary = "---011000010111000001101001"

var body = ""
var error: NSError? = nil
for param in parameters {
  let paramName = param["name"]!
  body += "--\(boundary)\r\n"
  body += "Content-Disposition:form-data; name=\"\(paramName)\""
  if let filename = param["fileName"] {
    let contentType = param["content-type"]!
    let fileContent = String(contentsOfFile: filename, encoding: String.Encoding.utf8)
    if (error != nil) {
      print(error as Any)
    }
    body += "; filename=\"\(filename)\"\r\n"
    body += "Content-Type: \(contentType)\r\n\r\n"
    body += fileContent
  } else if let paramValue = param["value"] {
    body += "\r\n\r\n\(paramValue)"
  }
}

let request = NSMutableURLRequest(url: NSURL(string: "https://apps.sarvam.ai/api/scheduling/v1/orgs/org_id/workspaces/workspace_id/campaigns/campaign_id/cohorts/upload")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
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()
```