> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developer.vitablehealth.com/api/organization-user-invitations/invite-organization-user/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developer.vitablehealth.com/_mcp/server.

# Invite a user to the organization

POST https://api.vitablehealth.com/v1/organization-user-invitations
Content-Type: application/json

Invites an email address to join the authenticated organization. The identity provider sends the email and hosts acceptance; the membership is written on the invitee's first sign-in. Any email domain is accepted, which is the only way to add a teammate whose domain the organization does not claim.

Reference: https://developer.vitablehealth.com/api/organization-user-invitations/invite-organization-user

## Authentication

- `Authorization` header (bearer token, required) — API Key or Access Token authentication using Bearer token in Authorization header. API keys use the vit_apk_ prefix, access tokens use the vit_at_ prefix.

## Servers

- `https://api.vitablehealth.com` (Production, default)
- `https://api.uat.vitablehealth.com` (UAT)

## Request

### Headers

- `X-Vitable-Organization` (string, optional) — Organization to act as for this request (e.g. `org_SGVsbG8gV29ybGQ`). Optional when your credentials reach a single organization. Required when they reach several — omitting it then returns 400 `organization_required`. A malformed value returns 400 `invalid_organization_header`, and naming an organization you do not have access to returns 403 `organization_access_denied`.

### Body (application/json)

This endpoint expects an InviteOrganizationUserRequest.

- `email` (string, required) — Address to invite. Any domain is accepted — this is the only way to add a teammate whose email domain the organization does not claim. For consumer domains the recipient must sign up with exactly this address.

## Response

### 201

- `data` (OrganizationUserInvitation, required)

## Errors

### 400 Bad Request Error

Bad Request - Invalid input or validation error

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 401 Unauthorized Error

Unauthorized - Invalid or missing API key

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 403 Forbidden Error

Forbidden - Insufficient permissions for this resource

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 404 Not Found Error

Not Found - The requested resource does not exist

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 409 Conflict Error

`organization_user_already_invited` — a pending invitation for this address already exists; or `organization_not_federated` — see above.

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 429 Too Many Requests Error

Too Many Requests - Rate limit exceeded

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 500 Internal Server Error

Internal Server Error - An unexpected error occurred

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 502 Bad Gateway Error

Bad Gateway - External service error

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

## Types

### OrganizationUserInvitation

- `id` (string, required) — Identity-provider invitation id.
- `email` (string, required) — Address the invitation was sent to.
- `state` (string, required) — Invitation state (pending / accepted / expired / revoked).
- `expires_at` (datetime, required) — When the invitation stops being redeemable.

## Examples

### Sent Invitation

**Response**

```json
{
  "data": {
    "id": "invitation_01H8ZQK",
    "email": "contractor@gmail.com",
    "state": "pending",
    "expires_at": "2026-09-17T00:00:00Z"
  }
}
```

**SDK Code**

```python Sent Invitation
import requests

url = "https://api.vitablehealth.com/v1/organization-user-invitations"

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

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

print(response.json())
```

```javascript Sent Invitation
const url = 'https://api.vitablehealth.com/v1/organization-user-invitations';
const options = {method: 'POST', headers: {Authorization: 'Bearer <apiKey>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go Sent Invitation
package main

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

func main() {

	url := "https://api.vitablehealth.com/v1/organization-user-invitations"

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

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

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

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

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

}
```

```ruby Sent Invitation
require 'uri'
require 'net/http'

url = URI("https://api.vitablehealth.com/v1/organization-user-invitations")

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

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

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

```java Sent Invitation
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.vitablehealth.com/v1/organization-user-invitations")
  .header("Authorization", "Bearer <apiKey>")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.vitablehealth.com/v1/organization-user-invitations', [
  'headers' => [
    'Authorization' => 'Bearer <apiKey>',
  ],
]);

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

```csharp Sent Invitation
using RestSharp;

var client = new RestClient("https://api.vitablehealth.com/v1/organization-user-invitations");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <apiKey>");
IRestResponse response = client.Execute(request);
```

```swift Sent Invitation
import Foundation

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.vitablehealth.com/v1/organization-user-invitations")! 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()
```

### Invite Request

**Request**

```json
{
  "email": "contractor@gmail.com"
}
```

**Response**

```json
{
  "data": {
    "id": "invitation_01H8ZQK",
    "email": "contractor@gmail.com",
    "state": "pending",
    "expires_at": "2026-09-17T00:00:00Z"
  }
}
```

**SDK Code**

```python Invite Request
import requests

url = "https://api.vitablehealth.com/v1/organization-user-invitations"

payload = { "email": "contractor@gmail.com" }
headers = {
    "Authorization": "Bearer <apiKey>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript Invite Request
const url = 'https://api.vitablehealth.com/v1/organization-user-invitations';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <apiKey>', 'Content-Type': 'application/json'},
  body: '{"email":"contractor@gmail.com"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go Invite Request
package main

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

func main() {

	url := "https://api.vitablehealth.com/v1/organization-user-invitations"

	payload := strings.NewReader("{\n  \"email\": \"contractor@gmail.com\"\n}")

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

	req.Header.Add("Authorization", "Bearer <apiKey>")
	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 Invite Request
require 'uri'
require 'net/http'

url = URI("https://api.vitablehealth.com/v1/organization-user-invitations")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"email\": \"contractor@gmail.com\"\n}"

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

```java Invite Request
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.vitablehealth.com/v1/organization-user-invitations")
  .header("Authorization", "Bearer <apiKey>")
  .header("Content-Type", "application/json")
  .body("{\n  \"email\": \"contractor@gmail.com\"\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.vitablehealth.com/v1/organization-user-invitations', [
  'body' => '{
  "email": "contractor@gmail.com"
}',
  'headers' => [
    'Authorization' => 'Bearer <apiKey>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp Invite Request
using RestSharp;

var client = new RestClient("https://api.vitablehealth.com/v1/organization-user-invitations");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"email\": \"contractor@gmail.com\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift Invite Request
import Foundation

let headers = [
  "Authorization": "Bearer <apiKey>",
  "Content-Type": "application/json"
]
let parameters = ["email": "contractor@gmail.com"] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.vitablehealth.com/v1/organization-user-invitations")! 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()
```