Managing Group Membership

In this guide you will learn how to update a user's membership to a group by adding and removing them from it.

When to use

Suppose:

• An employee is hired at a company and thus gains access to all of the company's resources.
• An employee quits and thus loses access to all of the company's resources.
• A user joins a GitHub organization and gains access to the organizations private repositories.
• A student graduates from school and loses access to the school's facilities.

These are cases where using group membership can be helpful as you do not need to iterate over all of the group's resources to add or revoke access to particular objects. You can add a relationship tuple indicating that a user belongs to a group, or delete a tuple to indicate that a user is no longer part of the group.

Before you start

In order to understand this guide correctly you must be familiar with some OpenFGA Concepts and know how to develop the things that we will list below.

Assume that you have the following authorization model.
You have two types:

• org that can have a member relation
• document that can have a reader relation.

DSL

model
  schema 1.1

type user

type org
  relations
    define member: [user]

type document
  relations
    define reader: [org#member]

JSON

{
  "schema_version": "1.1",
  "type_definitions": [
    {
      "type": "user"
    },
    {
      "type": "org",
      "relations": {
        "member": {
          "this": {}
        }
      },
      "metadata": {
        "relations": {
          "member": {
            "directly_related_user_types": [
              {
                "type": "user"
              }
            ]
          }
        }
      }
    },
    {
      "type": "document",
      "relations": {
        "reader": {
          "this": {}
        }
      },
      "metadata": {
        "relations": {
          "reader": {
            "directly_related_user_types": [
              {
                "type": "org",
                "relation": "member"
              }
            ]
          }
        }
      }
    }
  ]
}

Let us also assume that we have an org called "contoso" and a document called planning, and every member of that org can read the document. That is represented by having the following relationship tuple in the store:

[// Members of the contoso org can read the planning document
  {
  "_description": "Members of the contoso org can read the planning document",
  "user": "org:contoso#member",
  "relation": "reader",
  "object": "document:planning"
}]

With the above authorization model and relationship tuples, OpenFGA will respond with {"allowed":false} when check is called to see if Anne can read document:planning.

Node.js

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
const { OpenFgaClient } = require('@openfga/sdk');

// Initialize the SDK with no auth - see "How to setup SDK client" for more options
const fgaClient = new OpenFgaClient({
  apiUrl: process.env.FGA_API_URL, // required, e.g. https://api.fga.example
  storeId: process.env.FGA_STORE_ID,
  authorizationModelId: process.env.FGA_MODEL_ID, // Optional, can be overridden per request
});

// Run a check
const { allowed } = await fgaClient.check({
    user: 'anne',
    relation: 'reader',
    object: 'document:planning',
  }, {
  authorization_model_id: '01HVMMBCMGZNT3SED4Z17ECXCA',
});

// allowed = false

Go

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
import (
    "os"

    . "github.com/openfga/go-sdk"
    . "github.com/openfga/go-sdk/client"
)

func main() {
    // Initialize the SDK with no auth - see "How to setup SDK client" for more options
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiUrl:               os.Getenv("FGA_API_URL"), // required, e.g. https://api.fga.example
        StoreId:              os.Getenv("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        AuthorizationModelId: os.Getenv("FGA_MODEL_ID"),  // Optional, can be overridden per request
    })

    if err != nil {
    // .. Handle error
    }
}

options := ClientCheckOptions{
    AuthorizationModelId: PtrString("01HVMMBCMGZNT3SED4Z17ECXCA"),
}

body := ClientCheckRequest{
    User:     "anne",
    Relation: "reader",
    Object:   "document:planning",
}

data, err := fgaClient.Check(context.Background()).
    Body(body).
    Options(options).
    Execute()

// data = { allowed: false }

.NET

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace Example;

class Example {
    public static async Task Main() {
        // Initialize the SDK with no auth - see "How to setup SDK client" for more options
        var configuration = new ClientConfiguration() {
          ApiUrl = Environment.GetEnvironmentVariable("FGA_API_URL"), ?? "http://localhost:8080", // required, e.g. https://api.fga.example
          StoreId = Environment.GetEnvironmentVariable("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
          AuthorizationModelId = Environment.GetEnvironmentVariable("FGA_MODEL_ID"), // Optional, can be overridden per request
        };
        var fgaClient = new OpenFgaClient(configuration);
    }
}

var options = new ClientCheckOptions {
    AuthorizationModelId = "01HVMMBCMGZNT3SED4Z17ECXCA",
};
var body = new ClientCheckRequest {
    User = "anne",
    Relation = "reader",
    Object = "document:planning",
    
};
var response = await fgaClient.Check(body, options);

// response.Allowed = false

Python

Initialize the SDK

# ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import asyncio
import os
import json
from openfga_sdk.client import ClientConfiguration, OpenFgaClient

async def main():
    configuration = ClientConfiguration(
        api_url = os.environ.get('FGA_API_URL'), # required, e.g. https://api.fga.example
        store_id = os.environ.get('FGA_STORE_ID'), # optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        authorization_model_id = os.environ.get('FGA_MODEL_ID'), # Optional, can be overridden per request
    )

    # Enter a context with an instance of the OpenFgaClient
    async with OpenFgaClient(configuration) as fga_client:
        api_response = await fga_client.read_authorization_models()
        await fga_client.close()

asyncio.run(main())

options = {
    "authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA"
}
body = ClientCheckRequest(
    user="anne",
    relation="reader",
    object="document:planning",
)

response = await fga_client.check(body, options)

# response.allowed = false

Java

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import dev.openfga.sdk.api.client.OpenFgaClient;
import dev.openfga.sdk.api.configuration.ClientConfiguration;

public class Example {
  public static void main(String[] args) throws Exception {
      var config = new ClientConfiguration()
              .apiUrl(System.getenv("FGA_API_URL")) // If not specified, will default to "https://localhost:8080"
              .storeId(System.getenv("FGA_STORE_ID")) // Not required when calling createStore() or listStores()
              .authorizationModelId(System.getenv("FGA_AUTHORIZATION_MODEL_ID")); // Optional, can be overridden per request

      var fgaClient = new OpenFgaClient(config);
  }
}

var options = new ClientCheckOptions()
        .authorizationModelId("01HVMMBCMGZNT3SED4Z17ECXCA");

var body = new ClientCheckRequest()
        .user("anne")
        .relation("reader")
        ._object("document:planning");

var response = fgaClient.check(body, options).get();

// response.getAllowed() = true 

CLI

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

fga query check --store-id=$FGA_STORE_ID --model-id=01HVMMBCMGZNT3SED4Z17ECXCA anne reader document:planning

# Response: {"allowed":false}

curl

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

curl -X POST $FGA_API_URL/stores/$FGA_STORE_ID/check \
  -H "Authorization: Bearer $FGA_API_TOKEN" \ # Not needed if service does not require authorization
  -H "content-type: application/json" \
  -d '{"authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA", "tuple_key":{"user":"anne","relation":"reader","object":"document:planning"}}'

# Response: {"allowed":false}

Pseudocode

check(
  user = "anne", // check if the user `anne`
  relation = "reader", // has an `reader` relation
  object = "document:planning", // with the object `document:planning`
   authorization_id = "01HVMMBCMGZNT3SED4Z17ECXCA"
);

Reply: false

Now let's make Anne a member of org:contoso by adding another tuple:

Node.js

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
const { OpenFgaClient } = require('@openfga/sdk');

// Initialize the SDK with no auth - see "How to setup SDK client" for more options
const fgaClient = new OpenFgaClient({
  apiUrl: process.env.FGA_API_URL, // required, e.g. https://api.fga.example
  storeId: process.env.FGA_STORE_ID,
  authorizationModelId: process.env.FGA_MODEL_ID, // Optional, can be overridden per request
});

await fgaClient.write({
  writes: [
      // Anne is a member of the contoso org
      {"_description":"Anne is a member of the contoso org","user":"user:anne","relation":"member","object":"org:contoso"}
  ],
}, {
  authorization_model_id: "01HVMMBCMGZNT3SED4Z17ECXCA" 
});

Go

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
import (
    "os"

    . "github.com/openfga/go-sdk"
    . "github.com/openfga/go-sdk/client"
)

func main() {
    // Initialize the SDK with no auth - see "How to setup SDK client" for more options
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiUrl:               os.Getenv("FGA_API_URL"), // required, e.g. https://api.fga.example
        StoreId:              os.Getenv("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        AuthorizationModelId: os.Getenv("FGA_MODEL_ID"),  // Optional, can be overridden per request
    })

    if err != nil {
    // .. Handle error
    }
}

options := ClientWriteOptions{
    AuthorizationModelId: PtrString("01HVMMBCMGZNT3SED4Z17ECXCA"),
}

body := ClientWriteRequest{
    Writes: []ClientTupleKey{
        {
             // Anne is a member of the contoso org
             User: "user:anne",
             Relation: "member",
             Object: "org:contoso",
        }, 
    }, 
}

data, err := fgaClient.Write(context.Background()).
    Body(body).
    Options(options).
    Execute()

if err != nil {
    // .. Handle error
}

_ = data // use the response

.NET

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace Example;

class Example {
    public static async Task Main() {
        // Initialize the SDK with no auth - see "How to setup SDK client" for more options
        var configuration = new ClientConfiguration() {
          ApiUrl = Environment.GetEnvironmentVariable("FGA_API_URL"), ?? "http://localhost:8080", // required, e.g. https://api.fga.example
          StoreId = Environment.GetEnvironmentVariable("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
          AuthorizationModelId = Environment.GetEnvironmentVariable("FGA_MODEL_ID"), // Optional, can be overridden per request
        };
        var fgaClient = new OpenFgaClient(configuration);
    }
}

var options = new ClientWriteOptions {
    AuthorizationModelId = "01HVMMBCMGZNT3SED4Z17ECXCA",
};
var body = new ClientWriteRequest() {
    Writes = new List<ClientTupleKey>() {
    // Anne is a member of the contoso org
       new() {
                  User = "user:anne",
                  Relation = "member",
                  Object = "org:contoso"
              }
  },
};
var response = await fgaClient.Write(body, options);

Python

Initialize the SDK

# ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import asyncio
import os
import json
from openfga_sdk.client import ClientConfiguration, OpenFgaClient

async def main():
    configuration = ClientConfiguration(
        api_url = os.environ.get('FGA_API_URL'), # required, e.g. https://api.fga.example
        store_id = os.environ.get('FGA_STORE_ID'), # optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        authorization_model_id = os.environ.get('FGA_MODEL_ID'), # Optional, can be overridden per request
    )

    # Enter a context with an instance of the OpenFgaClient
    async with OpenFgaClient(configuration) as fga_client:
        api_response = await fga_client.read_authorization_models()
        await fga_client.close()

asyncio.run(main())

options = {
    "authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA"
}
body = ClientWriteRequest(
        writes=[
                ClientTuple(
                    # Anne is a member of the contoso org
                    user="user:anne",
                    relation="member",
                    object="org:contoso",
                ),
        ],
)

response = await fga_client.write(body, options)

Java

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import dev.openfga.sdk.api.client.OpenFgaClient;
import dev.openfga.sdk.api.configuration.ClientConfiguration;

public class Example {
  public static void main(String[] args) throws Exception {
      var config = new ClientConfiguration()
              .apiUrl(System.getenv("FGA_API_URL")) // If not specified, will default to "https://localhost:8080"
              .storeId(System.getenv("FGA_STORE_ID")) // Not required when calling createStore() or listStores()
              .authorizationModelId(System.getenv("FGA_AUTHORIZATION_MODEL_ID")); // Optional, can be overridden per request

      var fgaClient = new OpenFgaClient(config);
  }
}

var options = new ClientWriteOptions()
        .authorizationModelId("01HVMMBCMGZNT3SED4Z17ECXCA");

var body = new ClientWriteRequest()
        .writes(List.of(
                // Anne is a member of the contoso org
                new ClientTupleKey()
                        .user("user:anne")
                        .relation("member")
                        ._object("org:contoso")
        ));

var response = fgaClient.write(body, options).get();

curl

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

curl -X POST $FGA_API_URL/stores/$FGA_STORE_ID/write \
  -H "Authorization: Bearer $FGA_API_TOKEN" \ # Not needed if service does not require authorization
  -H "content-type: application/json" \
  -d '{"writes": { "tuple_keys" : [{"_description":"Anne is a member of the contoso org","user":"user:anne","relation":"member","object":"org:contoso"}] }, "authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA"}'

CLI

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

fga tuple write --store-id=${FGA_STORE_ID} --model-id=01HVMMBCMGZNT3SED4Z17ECXCA user:anne member org:contoso 

Pseudocode

write([
    // Anne is a member of the contoso org
    {
      "user":"user:anne",
      "relation":"member",
      "object":"org:contoso"
    }
], authorization_model_id="01HVMMBCMGZNT3SED4Z17ECXCA")

The OpenFGA service will now correctly respond with {"allowed":true} when check is called to see if Anne can read document:planning, but it will still respond with {"allowed":false} if we ask the same question for another user called Becky, who is not a member of the group org:contoso.

Node.js

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
const { OpenFgaClient } = require('@openfga/sdk');

// Initialize the SDK with no auth - see "How to setup SDK client" for more options
const fgaClient = new OpenFgaClient({
  apiUrl: process.env.FGA_API_URL, // required, e.g. https://api.fga.example
  storeId: process.env.FGA_STORE_ID,
  authorizationModelId: process.env.FGA_MODEL_ID, // Optional, can be overridden per request
});

// Run a check
const { allowed } = await fgaClient.check({
    user: 'user:anne',
    relation: 'reader',
    object: 'document:planning',
  }, {
  authorization_model_id: '01HVMMBCMGZNT3SED4Z17ECXCA',
});

// allowed = true

Go

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
import (
    "os"

    . "github.com/openfga/go-sdk"
    . "github.com/openfga/go-sdk/client"
)

func main() {
    // Initialize the SDK with no auth - see "How to setup SDK client" for more options
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiUrl:               os.Getenv("FGA_API_URL"), // required, e.g. https://api.fga.example
        StoreId:              os.Getenv("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        AuthorizationModelId: os.Getenv("FGA_MODEL_ID"),  // Optional, can be overridden per request
    })

    if err != nil {
    // .. Handle error
    }
}

options := ClientCheckOptions{
    AuthorizationModelId: PtrString("01HVMMBCMGZNT3SED4Z17ECXCA"),
}

body := ClientCheckRequest{
    User:     "user:anne",
    Relation: "reader",
    Object:   "document:planning",
}

data, err := fgaClient.Check(context.Background()).
    Body(body).
    Options(options).
    Execute()

// data = { allowed: true }

.NET

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace Example;

class Example {
    public static async Task Main() {
        // Initialize the SDK with no auth - see "How to setup SDK client" for more options
        var configuration = new ClientConfiguration() {
          ApiUrl = Environment.GetEnvironmentVariable("FGA_API_URL"), ?? "http://localhost:8080", // required, e.g. https://api.fga.example
          StoreId = Environment.GetEnvironmentVariable("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
          AuthorizationModelId = Environment.GetEnvironmentVariable("FGA_MODEL_ID"), // Optional, can be overridden per request
        };
        var fgaClient = new OpenFgaClient(configuration);
    }
}

var options = new ClientCheckOptions {
    AuthorizationModelId = "01HVMMBCMGZNT3SED4Z17ECXCA",
};
var body = new ClientCheckRequest {
    User = "user:anne",
    Relation = "reader",
    Object = "document:planning",
    
};
var response = await fgaClient.Check(body, options);

// response.Allowed = true

Python

Initialize the SDK

# ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import asyncio
import os
import json
from openfga_sdk.client import ClientConfiguration, OpenFgaClient

async def main():
    configuration = ClientConfiguration(
        api_url = os.environ.get('FGA_API_URL'), # required, e.g. https://api.fga.example
        store_id = os.environ.get('FGA_STORE_ID'), # optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        authorization_model_id = os.environ.get('FGA_MODEL_ID'), # Optional, can be overridden per request
    )

    # Enter a context with an instance of the OpenFgaClient
    async with OpenFgaClient(configuration) as fga_client:
        api_response = await fga_client.read_authorization_models()
        await fga_client.close()

asyncio.run(main())

options = {
    "authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA"
}
body = ClientCheckRequest(
    user="user:anne",
    relation="reader",
    object="document:planning",
)

response = await fga_client.check(body, options)

# response.allowed = true

Java

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import dev.openfga.sdk.api.client.OpenFgaClient;
import dev.openfga.sdk.api.configuration.ClientConfiguration;

public class Example {
  public static void main(String[] args) throws Exception {
      var config = new ClientConfiguration()
              .apiUrl(System.getenv("FGA_API_URL")) // If not specified, will default to "https://localhost:8080"
              .storeId(System.getenv("FGA_STORE_ID")) // Not required when calling createStore() or listStores()
              .authorizationModelId(System.getenv("FGA_AUTHORIZATION_MODEL_ID")); // Optional, can be overridden per request

      var fgaClient = new OpenFgaClient(config);
  }
}

var options = new ClientCheckOptions()
        .authorizationModelId("01HVMMBCMGZNT3SED4Z17ECXCA");

var body = new ClientCheckRequest()
        .user("user:anne")
        .relation("reader")
        ._object("document:planning");

var response = fgaClient.check(body, options).get();

// response.getAllowed() = true 

CLI

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

fga query check --store-id=$FGA_STORE_ID --model-id=01HVMMBCMGZNT3SED4Z17ECXCA user:anne reader document:planning

# Response: {"allowed":true}

curl

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

curl -X POST $FGA_API_URL/stores/$FGA_STORE_ID/check \
  -H "Authorization: Bearer $FGA_API_TOKEN" \ # Not needed if service does not require authorization
  -H "content-type: application/json" \
  -d '{"authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA", "tuple_key":{"user":"user:anne","relation":"reader","object":"document:planning"}}'

# Response: {"allowed":true}

Pseudocode

check(
  user = "user:anne", // check if the user `user:anne`
  relation = "reader", // has an `reader` relation
  object = "document:planning", // with the object `document:planning`
   authorization_id = "01HVMMBCMGZNT3SED4Z17ECXCA"
);

Reply: true

Node.js

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
const { OpenFgaClient } = require('@openfga/sdk');

// Initialize the SDK with no auth - see "How to setup SDK client" for more options
const fgaClient = new OpenFgaClient({
  apiUrl: process.env.FGA_API_URL, // required, e.g. https://api.fga.example
  storeId: process.env.FGA_STORE_ID,
  authorizationModelId: process.env.FGA_MODEL_ID, // Optional, can be overridden per request
});

// Run a check
const { allowed } = await fgaClient.check({
    user: 'user:becky',
    relation: 'reader',
    object: 'document:planning',
  }, {
  authorization_model_id: '01HVMMBCMGZNT3SED4Z17ECXCA',
});

// allowed = false

Go

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
import (
    "os"

    . "github.com/openfga/go-sdk"
    . "github.com/openfga/go-sdk/client"
)

func main() {
    // Initialize the SDK with no auth - see "How to setup SDK client" for more options
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiUrl:               os.Getenv("FGA_API_URL"), // required, e.g. https://api.fga.example
        StoreId:              os.Getenv("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        AuthorizationModelId: os.Getenv("FGA_MODEL_ID"),  // Optional, can be overridden per request
    })

    if err != nil {
    // .. Handle error
    }
}

options := ClientCheckOptions{
    AuthorizationModelId: PtrString("01HVMMBCMGZNT3SED4Z17ECXCA"),
}

body := ClientCheckRequest{
    User:     "user:becky",
    Relation: "reader",
    Object:   "document:planning",
}

data, err := fgaClient.Check(context.Background()).
    Body(body).
    Options(options).
    Execute()

// data = { allowed: false }

.NET

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace Example;

class Example {
    public static async Task Main() {
        // Initialize the SDK with no auth - see "How to setup SDK client" for more options
        var configuration = new ClientConfiguration() {
          ApiUrl = Environment.GetEnvironmentVariable("FGA_API_URL"), ?? "http://localhost:8080", // required, e.g. https://api.fga.example
          StoreId = Environment.GetEnvironmentVariable("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
          AuthorizationModelId = Environment.GetEnvironmentVariable("FGA_MODEL_ID"), // Optional, can be overridden per request
        };
        var fgaClient = new OpenFgaClient(configuration);
    }
}

var options = new ClientCheckOptions {
    AuthorizationModelId = "01HVMMBCMGZNT3SED4Z17ECXCA",
};
var body = new ClientCheckRequest {
    User = "user:becky",
    Relation = "reader",
    Object = "document:planning",
    
};
var response = await fgaClient.Check(body, options);

// response.Allowed = false

Python

Initialize the SDK

# ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import asyncio
import os
import json
from openfga_sdk.client import ClientConfiguration, OpenFgaClient

async def main():
    configuration = ClientConfiguration(
        api_url = os.environ.get('FGA_API_URL'), # required, e.g. https://api.fga.example
        store_id = os.environ.get('FGA_STORE_ID'), # optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        authorization_model_id = os.environ.get('FGA_MODEL_ID'), # Optional, can be overridden per request
    )

    # Enter a context with an instance of the OpenFgaClient
    async with OpenFgaClient(configuration) as fga_client:
        api_response = await fga_client.read_authorization_models()
        await fga_client.close()

asyncio.run(main())

options = {
    "authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA"
}
body = ClientCheckRequest(
    user="user:becky",
    relation="reader",
    object="document:planning",
)

response = await fga_client.check(body, options)

# response.allowed = false

Java

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import dev.openfga.sdk.api.client.OpenFgaClient;
import dev.openfga.sdk.api.configuration.ClientConfiguration;

public class Example {
  public static void main(String[] args) throws Exception {
      var config = new ClientConfiguration()
              .apiUrl(System.getenv("FGA_API_URL")) // If not specified, will default to "https://localhost:8080"
              .storeId(System.getenv("FGA_STORE_ID")) // Not required when calling createStore() or listStores()
              .authorizationModelId(System.getenv("FGA_AUTHORIZATION_MODEL_ID")); // Optional, can be overridden per request

      var fgaClient = new OpenFgaClient(config);
  }
}

var options = new ClientCheckOptions()
        .authorizationModelId("01HVMMBCMGZNT3SED4Z17ECXCA");

var body = new ClientCheckRequest()
        .user("user:becky")
        .relation("reader")
        ._object("document:planning");

var response = fgaClient.check(body, options).get();

// response.getAllowed() = true 

CLI

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

fga query check --store-id=$FGA_STORE_ID --model-id=01HVMMBCMGZNT3SED4Z17ECXCA user:becky reader document:planning

# Response: {"allowed":false}

curl

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

curl -X POST $FGA_API_URL/stores/$FGA_STORE_ID/check \
  -H "Authorization: Bearer $FGA_API_TOKEN" \ # Not needed if service does not require authorization
  -H "content-type: application/json" \
  -d '{"authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA", "tuple_key":{"user":"user:becky","relation":"reader","object":"document:planning"}}'

# Response: {"allowed":false}

Pseudocode

check(
  user = "user:becky", // check if the user `user:becky`
  relation = "reader", // has an `reader` relation
  object = "document:planning", // with the object `document:planning`
   authorization_id = "01HVMMBCMGZNT3SED4Z17ECXCA"
);

Reply: false

Modeling user groups

You need to know how to add users to groups and grant groups access to an object. Learn more →

Managing group access

You need to know how to manage group access to an object. Learn more →

OpenFGA concepts

• A Type: a class of objects that have similar characteristics
• A User: an entity in the system that can be related to an object
• A Relation: is a string defined in the type definition of an authorization model that defines the possibility of a relationship between an object of the same type as the type definition and a user in the system
• An Object: represents an entity in the system. Users' relationships to it can be define through relationship tuples and the authorization model
• A Relationship Tuple: a grouping consisting of a user, a relation and an object stored in OpenFGA

Step by step

01. Revoking group membership

Imagine that every member of org:contoso has a reader relationship to 1000 documents. Now imagine that anne is no longer a member of org:contoso, so we want to revoke her access to all those documents, including document:planning. To accomplish this, we can simply delete the tuple in OpenFGA that specifies that Anne is a member of org:contoso.

Node.js

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
const { OpenFgaClient } = require('@openfga/sdk');

// Initialize the SDK with no auth - see "How to setup SDK client" for more options
const fgaClient = new OpenFgaClient({
  apiUrl: process.env.FGA_API_URL, // required, e.g. https://api.fga.example
  storeId: process.env.FGA_STORE_ID,
  authorizationModelId: process.env.FGA_MODEL_ID, // Optional, can be overridden per request
});

await fgaClient.write({
  deletes: [
      { user: 'user:anne', relation: 'member', object: 'org:contoso'}
  ],
}, {
  authorization_model_id: "01HVMMBCMGZNT3SED4Z17ECXCA" 
});

Go

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
import (
    "os"

    . "github.com/openfga/go-sdk"
    . "github.com/openfga/go-sdk/client"
)

func main() {
    // Initialize the SDK with no auth - see "How to setup SDK client" for more options
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiUrl:               os.Getenv("FGA_API_URL"), // required, e.g. https://api.fga.example
        StoreId:              os.Getenv("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        AuthorizationModelId: os.Getenv("FGA_MODEL_ID"),  // Optional, can be overridden per request
    })

    if err != nil {
    // .. Handle error
    }
}

options := ClientWriteOptions{
    AuthorizationModelId: PtrString("01HVMMBCMGZNT3SED4Z17ECXCA"),
}

body := ClientWriteRequest{
    Deletes: []ClientTupleKeyWithoutCondition{
        {
             User: "user:anne",
             Relation: "member",
             Object: "org:contoso",
        }, 
    }, 
}

data, err := fgaClient.Write(context.Background()).
    Body(body).
    Options(options).
    Execute()

if err != nil {
    // .. Handle error
}

_ = data // use the response

.NET

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace Example;

class Example {
    public static async Task Main() {
        // Initialize the SDK with no auth - see "How to setup SDK client" for more options
        var configuration = new ClientConfiguration() {
          ApiUrl = Environment.GetEnvironmentVariable("FGA_API_URL"), ?? "http://localhost:8080", // required, e.g. https://api.fga.example
          StoreId = Environment.GetEnvironmentVariable("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
          AuthorizationModelId = Environment.GetEnvironmentVariable("FGA_MODEL_ID"), // Optional, can be overridden per request
        };
        var fgaClient = new OpenFgaClient(configuration);
    }
}

var options = new ClientWriteOptions {
    AuthorizationModelId = "01HVMMBCMGZNT3SED4Z17ECXCA",
};
var body = new ClientWriteRequest() {
    Deletes = new List<ClientTupleKeyWithoutCondition>() {
    new() { User = "user:anne", Relation = "member", Object = "org:contoso" }
  },
};
var response = await fgaClient.Write(body, options);

Python

Initialize the SDK

# ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import asyncio
import os
import json
from openfga_sdk.client import ClientConfiguration, OpenFgaClient

async def main():
    configuration = ClientConfiguration(
        api_url = os.environ.get('FGA_API_URL'), # required, e.g. https://api.fga.example
        store_id = os.environ.get('FGA_STORE_ID'), # optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        authorization_model_id = os.environ.get('FGA_MODEL_ID'), # Optional, can be overridden per request
    )

    # Enter a context with an instance of the OpenFgaClient
    async with OpenFgaClient(configuration) as fga_client:
        api_response = await fga_client.read_authorization_models()
        await fga_client.close()

asyncio.run(main())

options = {
    "authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA"
}
body = ClientWriteRequest(
        deletes=[
                ClientTuple(
                    user="user:anne",
                    relation="member",
                    object="org:contoso",
                ),
        ],
)

response = await fga_client.write(body, options)

Java

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import dev.openfga.sdk.api.client.OpenFgaClient;
import dev.openfga.sdk.api.configuration.ClientConfiguration;

public class Example {
  public static void main(String[] args) throws Exception {
      var config = new ClientConfiguration()
              .apiUrl(System.getenv("FGA_API_URL")) // If not specified, will default to "https://localhost:8080"
              .storeId(System.getenv("FGA_STORE_ID")) // Not required when calling createStore() or listStores()
              .authorizationModelId(System.getenv("FGA_AUTHORIZATION_MODEL_ID")); // Optional, can be overridden per request

      var fgaClient = new OpenFgaClient(config);
  }
}

var options = new ClientWriteOptions()
        .authorizationModelId("01HVMMBCMGZNT3SED4Z17ECXCA");

var body = new ClientWriteRequest() 
        .deletes(List.of(
                new ClientTupleKey()
                        .user("user:anne")
                        .relation("member")
                        ._object("org:contoso")
        ));

var response = fgaClient.write(body, options).get();

curl

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

curl -X POST $FGA_API_URL/stores/$FGA_STORE_ID/write \
  -H "Authorization: Bearer $FGA_API_TOKEN" \ # Not needed if service does not require authorization
  -H "content-type: application/json" \
  -d '{"deletes": { "tuple_keys" : [{"user":"user:anne","relation":"member","object":"org:contoso"}] }, "authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA"}'

CLI

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

fga tuple delete --store-id=${FGA_STORE_ID} user:anne member org:contoso

Pseudocode

delete([
    {
      "user":"user:anne",
      "relation":"member",
      "object":"org:contoso"
    }
], authorization_model_id="01HVMMBCMGZNT3SED4Z17ECXCA")

02. Validating revoked member no longer has access

Once the above relationship tuple is deleted, we can check if Anne can read document:planning. OpenFGA will return { "allowed": false }.

Node.js

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
const { OpenFgaClient } = require('@openfga/sdk');

// Initialize the SDK with no auth - see "How to setup SDK client" for more options
const fgaClient = new OpenFgaClient({
  apiUrl: process.env.FGA_API_URL, // required, e.g. https://api.fga.example
  storeId: process.env.FGA_STORE_ID,
  authorizationModelId: process.env.FGA_MODEL_ID, // Optional, can be overridden per request
});

// Run a check
const { allowed } = await fgaClient.check({
    user: 'user:anne',
    relation: 'reader',
    object: 'document:planning',
  }, {
  authorization_model_id: '01HVMMBCMGZNT3SED4Z17ECXCA',
});

// allowed = false

Go

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
import (
    "os"

    . "github.com/openfga/go-sdk"
    . "github.com/openfga/go-sdk/client"
)

func main() {
    // Initialize the SDK with no auth - see "How to setup SDK client" for more options
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiUrl:               os.Getenv("FGA_API_URL"), // required, e.g. https://api.fga.example
        StoreId:              os.Getenv("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        AuthorizationModelId: os.Getenv("FGA_MODEL_ID"),  // Optional, can be overridden per request
    })

    if err != nil {
    // .. Handle error
    }
}

options := ClientCheckOptions{
    AuthorizationModelId: PtrString("01HVMMBCMGZNT3SED4Z17ECXCA"),
}

body := ClientCheckRequest{
    User:     "user:anne",
    Relation: "reader",
    Object:   "document:planning",
}

data, err := fgaClient.Check(context.Background()).
    Body(body).
    Options(options).
    Execute()

// data = { allowed: false }

.NET

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.
// import the SDK
using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace Example;

class Example {
    public static async Task Main() {
        // Initialize the SDK with no auth - see "How to setup SDK client" for more options
        var configuration = new ClientConfiguration() {
          ApiUrl = Environment.GetEnvironmentVariable("FGA_API_URL"), ?? "http://localhost:8080", // required, e.g. https://api.fga.example
          StoreId = Environment.GetEnvironmentVariable("FGA_STORE_ID"), // optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
          AuthorizationModelId = Environment.GetEnvironmentVariable("FGA_MODEL_ID"), // Optional, can be overridden per request
        };
        var fgaClient = new OpenFgaClient(configuration);
    }
}

var options = new ClientCheckOptions {
    AuthorizationModelId = "01HVMMBCMGZNT3SED4Z17ECXCA",
};
var body = new ClientCheckRequest {
    User = "user:anne",
    Relation = "reader",
    Object = "document:planning",
    
};
var response = await fgaClient.Check(body, options);

// response.Allowed = false

Python

Initialize the SDK

# ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import asyncio
import os
import json
from openfga_sdk.client import ClientConfiguration, OpenFgaClient

async def main():
    configuration = ClientConfiguration(
        api_url = os.environ.get('FGA_API_URL'), # required, e.g. https://api.fga.example
        store_id = os.environ.get('FGA_STORE_ID'), # optional, not needed for `CreateStore` and `ListStores`, required before calling for all other methods
        authorization_model_id = os.environ.get('FGA_MODEL_ID'), # Optional, can be overridden per request
    )

    # Enter a context with an instance of the OpenFgaClient
    async with OpenFgaClient(configuration) as fga_client:
        api_response = await fga_client.read_authorization_models()
        await fga_client.close()

asyncio.run(main())

options = {
    "authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA"
}
body = ClientCheckRequest(
    user="user:anne",
    relation="reader",
    object="document:planning",
)

response = await fga_client.check(body, options)

# response.allowed = false

Java

Initialize the SDK

// ApiTokenIssuer, ApiAudience, ClientId and ClientSecret are optional.

import dev.openfga.sdk.api.client.OpenFgaClient;
import dev.openfga.sdk.api.configuration.ClientConfiguration;

public class Example {
  public static void main(String[] args) throws Exception {
      var config = new ClientConfiguration()
              .apiUrl(System.getenv("FGA_API_URL")) // If not specified, will default to "https://localhost:8080"
              .storeId(System.getenv("FGA_STORE_ID")) // Not required when calling createStore() or listStores()
              .authorizationModelId(System.getenv("FGA_AUTHORIZATION_MODEL_ID")); // Optional, can be overridden per request

      var fgaClient = new OpenFgaClient(config);
  }
}

var options = new ClientCheckOptions()
        .authorizationModelId("01HVMMBCMGZNT3SED4Z17ECXCA");

var body = new ClientCheckRequest()
        .user("user:anne")
        .relation("reader")
        ._object("document:planning");

var response = fgaClient.check(body, options).get();

// response.getAllowed() = true 

CLI

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

fga query check --store-id=$FGA_STORE_ID --model-id=01HVMMBCMGZNT3SED4Z17ECXCA user:anne reader document:planning

# Response: {"allowed":false}

curl

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

Set FGA_API_URL according to the service you are using (e.g. https://api.fga.example)

curl -X POST $FGA_API_URL/stores/$FGA_STORE_ID/check \
  -H "Authorization: Bearer $FGA_API_TOKEN" \ # Not needed if service does not require authorization
  -H "content-type: application/json" \
  -d '{"authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA", "tuple_key":{"user":"user:anne","relation":"reader","object":"document:planning"}}'

# Response: {"allowed":false}

Pseudocode

check(
  user = "user:anne", // check if the user `user:anne`
  relation = "reader", // has an `reader` relation
  object = "document:planning", // with the object `document:planning`
   authorization_id = "01HVMMBCMGZNT3SED4Z17ECXCA"
);

Reply: false

Related Sections

Check the following sections for more on how to model group.

Modeling User Groups

Learn about how to model users and groups.

• More

Managing Group Access

Learn about managing group access.

• More