> 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/guides/accounts-payable/accounting-sync/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.mercoa.com/_mcp/server.

Mercoa supports accounting sync with [Codat](https://www.codat.io/) and [Rutter](https://www.rutter.com/). These are referred to as "Accounting Sync Platforms."

## Add API Key

In the [developer portal](https://mercoa.com/dashboard/developers), choose the accounting sync platform and provide your API key.

## Sync Entity

You must tie the Mercoa [entity](/common-concepts/entities) with the business object created in the accounting sync platform. Mercoa can create a new object in the accounting sync platform, or tie the entity to an existing object.

### Request

POST [https://api.mercoa.com/entity/\{entityId}/external-accounting-system/create](https://api.mercoa.com/entity/\{entityId}/external-accounting-system/create)

**`Default`**

```curl Default
curl -X POST https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/create \
     -H "Authorization: Bearer <token>" \
     -H "Content-Type: application/json" \
     -d '{
  "type": "rutter",
  "accessToken": "123"
}'
```

**`Default`**

```python Default
import requests

url = "https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/create"

payload = {
    "type": "rutter",
    "accessToken": "123"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

**`Default`**

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

const client = new MercoaClient({ token: "YOUR_TOKEN" });
await client.entity.externalAccountingSystem.create("ent_8545a84e-a45f-41bf-bdf1-33b42a55812c", {
    type: "rutter",
    accessToken: "123"
});

```

**`Default`**

```go Default
package main

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

func main() {

	url := "https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/create"

	payload := strings.NewReader("{\n  \"type\": \"rutter\",\n  \"accessToken\": \"123\"\n}")

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

}
```

**`Default`**

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

url = URI("https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/create")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"type\": \"rutter\",\n  \"accessToken\": \"123\"\n}"

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

**`Default`**

```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_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/create")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"type\": \"rutter\",\n  \"accessToken\": \"123\"\n}")
  .asString();
```

**`Default`**

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/create', [
  'body' => '{
  "type": "rutter",
  "accessToken": "123"
}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

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

**`Default`**

```csharp Default
using RestSharp;

var client = new RestClient("https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/create");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"type\": \"rutter\",\n  \"accessToken\": \"123\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

**`Default`**

```swift Default
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = [
  "type": "rutter",
  "accessToken": "123"
] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/create")! 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()
```

## Link Accounting Platform

If your user hasn't configured their accounting software with the accounting sync platform, you can generate a link from the accounting sync platform to let them connect their accounting software to the platform.

### Request

GET [https://api.mercoa.com/entity/\{entityId}/external-accounting-system/connect](https://api.mercoa.com/entity/\{entityId}/external-accounting-system/connect)

**`Default`**

```curl Default
curl https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/connect \
     -H "Authorization: Bearer <token>"
```

**`Default`**

```python Default
import requests

url = "https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/connect"

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

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

print(response.json())
```

**`Default`**

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

const client = new MercoaClient({ token: "YOUR_TOKEN" });
await client.entity.externalAccountingSystem.connect("ent_8545a84e-a45f-41bf-bdf1-33b42a55812c");

```

**`Default`**

```go Default
package main

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

func main() {

	url := "https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/connect"

	req, _ := http.NewRequest("GET", 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))

}
```

**`Default`**

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

url = URI("https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/connect")

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

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

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

**`Default`**

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

HttpResponse<String> response = Unirest.get("https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/connect")
  .header("Authorization", "Bearer <token>")
  .asString();
```

**`Default`**

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

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/connect', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

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

**`Default`**

```csharp Default
using RestSharp;

var client = new RestClient("https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/connect");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

**`Default`**

```swift Default
import Foundation

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/connect")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
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()
```

## Sync Vendors and Bills

Vendors and bills are synced on demand. There is no automatic sync.

### Request

GET [https://api.mercoa.com/entity/\{entityId}/external-accounting-system/sync](https://api.mercoa.com/entity/\{entityId}/external-accounting-system/sync)

**`Default`**

```curl Default
curl -G https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/sync \
     -H "Authorization: Bearer <token>" \
     -d vendors=pull \
     -d bills=push \
     -d glAccounts=pull
```

**`Default`**

```python Default
import requests

url = "https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/sync"

querystring = {"vendors":"pull","bills":"push","glAccounts":"pull"}

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

response = requests.get(url, headers=headers, params=querystring)

print(response.json())
```

**`Default`**

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

const client = new MercoaClient({ token: "YOUR_TOKEN" });
await client.entity.externalAccountingSystem.sync("ent_8545a84e-a45f-41bf-bdf1-33b42a55812c", {
    vendors: "pull",
    bills: "push",
    glAccounts: "pull"
});

```

**`Default`**

```go Default
package main

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

func main() {

	url := "https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/sync?vendors=pull&bills=push&glAccounts=pull"

	req, _ := http.NewRequest("GET", 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))

}
```

**`Default`**

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

url = URI("https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/sync?vendors=pull&bills=push&glAccounts=pull")

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

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

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

**`Default`**

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

HttpResponse<String> response = Unirest.get("https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/sync?vendors=pull&bills=push&glAccounts=pull")
  .header("Authorization", "Bearer <token>")
  .asString();
```

**`Default`**

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

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/sync?vendors=pull&bills=push&glAccounts=pull', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

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

**`Default`**

```csharp Default
using RestSharp;

var client = new RestClient("https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/sync?vendors=pull&bills=push&glAccounts=pull");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

**`Default`**

```swift Default
import Foundation

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.mercoa.com/entity/ent_8545a84e-a45f-41bf-bdf1-33b42a55812c/external-accounting-system/sync?vendors=pull&bills=push&glAccounts=pull")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
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()
```