> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.mercoa.com/embedded-ap-ar/api-reference/entity/initiate-kyb/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.mercoa.com/_mcp/server.

# Initiate KYB

POST https://api.mercoa.com/entity/{entityId}/request-kyb

This endpoint is used to initiate KYB for an entity. 
Send a request to this endpoint only after the entity has accepted the Mercoa ToS,
all representatives have been added, and all required fields have been filled out.

Reference: https://docs.mercoa.com/embedded-ap-ar/api-reference/entity/initiate-kyb

## Authentication

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

## Request

### Path parameters

- `entityId` (string, required) — Entity ID or Entity ForeignID

## Errors

### 400 Bad Request

- `errorName` ("BadRequest", required)
- `content` (string, required)

### 401 Unauthorized

- `errorName` ("Unauthorized", required)
- `content` (string, required)

### 403 Forbidden

- `errorName` ("Forbidden", required)
- `content` (string, required)

### 404 Not Found

- `errorName` ("NotFound", required)
- `content` (string, required)

### 409 Conflict

- `errorName` ("Conflict", required)
- `content` (string, required)

### 500 Internal Server Error

- `errorName` ("InternalServerError", required)
- `content` (string, required)

### 501 Unimplemented

- `errorName` ("Unimplemented", required)
- `content` (string, required)

## Examples

**SDK Code**

```python Default
import requests

url = "https://api.mercoa.com/entity/ent_a0f6ea94-0761-4a5e-a416-3c453cb7eced/request-kyb"

headers = {"Authorization": "Bearer <token>"}

response = requests.post(url, headers=headers)

print(response.json())
```

```typescript Default
import { MercoaClient } from "@mercoa/javascript";

const client = new MercoaClient({ token: "YOUR_TOKEN" });
await client.entity.initiateKyb("ent_a0f6ea94-0761-4a5e-a416-3c453cb7eced");

```

```go Default
package main

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

func main() {

	url := "https://api.mercoa.com/entity/ent_a0f6ea94-0761-4a5e-a416-3c453cb7eced/request-kyb"

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

	req.Header.Add("Authorization", "Bearer <token>")

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

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

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

}
```

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

url = URI("https://api.mercoa.com/entity/ent_a0f6ea94-0761-4a5e-a416-3c453cb7eced/request-kyb")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'

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

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

HttpResponse<String> response = Unirest.post("https://api.mercoa.com/entity/ent_a0f6ea94-0761-4a5e-a416-3c453cb7eced/request-kyb")
  .header("Authorization", "Bearer <token>")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.mercoa.com/entity/ent_a0f6ea94-0761-4a5e-a416-3c453cb7eced/request-kyb', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

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

```csharp Default
using RestSharp;

var client = new RestClient("https://api.mercoa.com/entity/ent_a0f6ea94-0761-4a5e-a416-3c453cb7eced/request-kyb");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift Default
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.mercoa.com/entity/ent_a0f6ea94-0761-4a5e-a416-3c453cb7eced/request-kyb")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers

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()
```