Auth0 FGA Consistency Modes

Background

The Auth0 FGA service has been optimized for lower latency and high availability rather than strong consistency on all read requests and evaluation queries. That means that results from the Read and Check, ListObjects, ListUsers and Expand requests may not reflect the latest state and what was just written in the database, and might take a few seconds to converge.

Some of the choices that Auth0 FGA has made include:

• Query Consistency Modes
• Eventually consistent, multi-region active-active databases

Query Consistency Modes

To reduce latency, Auth0 FGA implements a multi-layer cache. It uses a database-level cache, which caches database reads, and a sub-problem cache, which caches partial query evaluations that can be reused across requests. Each cache has a TTL of 10 seconds. That means if a certain tuple is read from the DB, is then deleted and then subsequently read - the result of the first read might be returned for up to 20 seconds after the first call.

When querying Auth0 FGA using Read or any of the query APIs like Check, Expand, ListObjects and ListUsers, you can specify a query consistency parameter that can have one of the following values:

Name	Description
MINIMIZE_LATENCY (default)	Auth0 FGA will serve queries from the cache when possible
HIGHER_CONSISTENCY	Auth0 FGA will skip the cache and query the database directly

If you write a tuple and you immediately make a Check on a relation affected by that tuple using MINIMIZE_LATENCY, the tuple change might not be taken in consideration if Auth0 FGA serves the result from the cache.

When to use higher consistency

When specifying HIGHER_CONSISTENCY you are trading off consistency for latency and system performance. Always specifying HIGHER_CONSISTENCY will have a significant impact in performance.

If you have a use case where higher consistency is needed, it's recommended that whenever possible, you decide in runtime the consistency level you need. If you are storing a timestamp indicating when a resource was last modified in your database, you can use that to decide the kind of request you do.

For example, if you share document:readme with a user:anne and you update a modified_date field in the document table when that happens, you can write code like the below when calling check("user:anne", "can_view", "document:readme") to avoid paying the price of additional latency when calling the API.

if (date_modified + cache_time_to_live_period > Date.now()) {
    const { allowed } = await fgaClient.check(
      { user: "user:anne", relation: "can_view", object: "document:roadmap"}
    );
} else {
    const { allowed } = await fgaClient.check(
        {  user: "user:anne", relation: "can_view", object: "document:roadmap"},
        {  consistency: ConsistencyPreference.HigherConsistency }
    );
}

Eventually consistent, multi-region active-active database

The Auth0 FGA service uses an eventually consistent database in its implementation. This means that if a read request is performed on a region different than the region where the original write request was made, the data returned by the read might not reflect the data written by the write.

When you specify the HIGHER_CONSISTENCY parameter in queries, Auth0 FGA will not use the cache, but it might still be affected by replication lag.

If your application services are hosted in a single cloud region, all the API requests will be always routed to the same Auth0 FGA region, and the replication lag will be negligible. However, if you have servers in multiple regions, Auth0 FGA might route requests to different regions, and the replication lag can still impact how consistent the API response is.

For example, assuming the following authorization model

DSL

model
  schema 1.1

type user

type document
  relations
    define viewer: [user]
    define can_view: viewer

JSON

{
  "schema_version": "1.1",
  "type_definitions": [
    {
      "type": "user",
      "relations": {}
    },
    {
      "type": "document",
      "relations": {
        "viewer": {
          "this": {}
        },
        "can_view": {
          "computedUserset": {
            "object": "",
            "relation": "viewer"
          }
        }
      },
      "metadata": {
        "relations": {
          "viewer": {
            "directly_related_user_types": [
              {
                "type": "user"
              }
            ]
          },
          "can_view": {
            "directly_related_user_types": []
          }
        }
      }
    }
  ]
}

Immediately after writing a tuple saying that Bob is a viewer of document:meeting_notes.doc, calling Check to see whether Bob can view document:meeting_notes.doc may return false.

Node.js

Initialize the SDK

// Checkout the "How to Setup the SDK Client" page for more details.
const { CredentialsMethod, OpenFgaClient } = require('@openfga/sdk'); // OR import { CredentialsMethod, OpenFgaClient } from '@openfga/sdk';

// Ensure the environment variables are set
// FGA_API_URL = 'https://api.us1.fga.dev' // 'https://api.eu1.fga.dev' for EU and 'https://api.au1.fga.dev' for AU
// FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
// FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
// FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
// FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

const fgaClient = new OpenFgaClient({
    apiUrl: process.env.FGA_API_URL,
    storeId: process.env.FGA_STORE_ID,
    authorizationModelId: process.env.FGA_MODEL_ID,
    credentials: { // Credentials are not needed if connecting to the Playground API
      method: CredentialsMethod.ClientCredentials,
      config: {
        apiTokenIssuer: process.env.FGA_API_TOKEN_ISSUER,
        apiAudience: process.env.FGA_API_AUDIENCE,
        clientId: process.env.FGA_CLIENT_ID,
        clientSecret: process.env.FGA_CLIENT_SECRET,
      },
    },
});

await fgaClient.write({
  writes: [
      {"user":"user:bob","relation":"viewer","object":"document:meeting_notes.doc"}
  ],
}, {
  authorizationModelId: "01HVMMBCMGZNT3SED4Z17ECXCA" 
});

Go

Initialize the SDK

// Checkout the "How to Setup the SDK Client" page for more details.
import (
    "os"

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

// Ensure the environment variables are set
// FGA_API_URL = 'https://api.us1.fga.dev' // 'https://api.eu1.fga.dev' for EU and 'https://api.au1.fga.dev' for AU
// FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
// FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
// FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
// FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

func main() {
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiUrl:               os.Getenv("FGA_API_URL"), 
        StoreId:              os.Getenv("FGA_STORE_ID"),
        AuthorizationModelId: os.Getenv("FGA_MODEL_ID"),
        Credentials: &credentials.Credentials{ // Credentials are not needed if connecting to the Playground API
            Method: credentials.CredentialsMethodClientCredentials,
            Config: &credentials.Config{
                ClientCredentialsClientId:       os.Getenv("FGA_CLIENT_ID"),
                ClientCredentialsClientSecret:   os.Getenv("FGA_CLIENT_SECRET"),
                ClientCredentialsApiAudience:    os.Getenv("FGA_API_AUDIENCE"),
                ClientCredentialsApiTokenIssuer: os.Getenv("FGA_API_TOKEN_ISSUER"),
            },
        },
    })

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

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

body := ClientWriteRequest{
    Writes: []ClientTupleKey{
        {
             User: "user:bob",
             Relation: "viewer",
             Object: "document:meeting_notes.doc",
        }, 
    }, 
}

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

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

_ = data // use the response

.NET

Initialize the SDK

// Checkout the "How to Setup the SDK Client" page for more details.
using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace Example;

// Ensure the environment variables are set
// FGA_API_URL = 'https://api.us1.fga.dev' // 'https://api.eu1.fga.dev' for EU and 'https://api.au1.fga.dev' for AU
// FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
// FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
// FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
// FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

class MyProgram {
    static async Task Main() {
        var configuration = new ClientConfiguration() {
            ApiUrl = Environment.GetEnvironmentVariable("FGA_API_URL"),
            StoreId = Environment.GetEnvironmentVariable("FGA_STORE_ID"),
            AuthorizationModelId = Environment.GetEnvironmentVariable("FGA_MODEL_ID"),
            Credentials = new Credentials() { // Credentials are not needed if connecting to the Playground API
                Method = CredentialsMethod.ClientCredentials,
                Config = new CredentialsConfig() {
                    ApiTokenIssuer = Environment.GetEnvironmentVariable("FGA_API_TOKEN_ISSUER"),
                    ApiAudience = Environment.GetEnvironmentVariable("FGA_API_AUDIENCE"),
                    ClientId = Environment.GetEnvironmentVariable("FGA_CLIENT_ID"),
                    ClientSecret = Environment.GetEnvironmentVariable("FGA_CLIENT_SECRET"),
                }
            }
        };
        var fgaClient = new OpenFgaClient(configuration);
    }
}

var options = new ClientWriteOptions {
    AuthorizationModelId = "01HVMMBCMGZNT3SED4Z17ECXCA",
};
var body = new ClientWriteRequest() {
    Writes = new List<ClientTupleKey>() {
       new() {
                  User = "user:bob",
                  Relation = "viewer",
                  Object = "document:meeting_notes.doc"
              }
  },
};
var response = await fgaClient.Write(body, options);

Python

Initialize the SDK

# Checkout the "How to Setup the SDK Client" page for more details.

import os
import openfga_sdk
from openfga_sdk.client import OpenFgaClient, ClientConfiguration
from openfga_sdk.credentials import Credentials, CredentialConfiguration

# FGA_API_URL = 'https://api.us1.fga.dev' // 'https://api.eu1.fga.dev' for EU and 'https://api.au1.fga.dev' for AU
# FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
# FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
# FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
# FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
# FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
# FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

async def main():
    credentials = Credentials(
      method='client_credentials',
      configuration=CredentialConfiguration(
          api_issuer= os.environ.get('FGA_API_TOKEN_ISSUER'),
          api_audience= os.environ.get('FGA_API_AUDIENCE'),
          client_id= os.environ.get('FGA_CLIENT_ID'),
          client_secret= os.environ.get('FGA_CLIENT_SECRET'),
      )
    )

    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(
                    user="user:bob",
                    relation="viewer",
                    object="document:meeting_notes.doc",
                ),
        ],
)

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;
import dev.openfga.sdk.api.configuration.ClientCredentials;
import dev.openfga.sdk.api.configuration.Credentials;

// FGA_API_URL = 'https://api.us1.fga.dev' for Dev Preview and Early Access / 'https://api.playground.fga.dev' for the FGA Playground
// FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
// FGA_API_TOKEN_ISSUER = 'auth.fga.dev' for Dev Preview and Early Access / not needed for the FGA Playground
// FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' for Dev Preview and Early Access / not needed for the FGA Playground
// FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page / not needed for the FGA Playground
// FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page / not needed for the FGA Playground

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_MODEL_ID")) // Optional, can be overridden per request
              .credentials(new Credentials(
                  new ClientCredentials()
                          .apiTokenIssuer(System.getenv("FGA_API_TOKEN_ISSUER"))
                          .apiAudience(System.getenv("FGA_API_AUDIENCE"))
                          .clientId(System.getenv("FGA_CLIENT_ID"))
                          .clientSecret(System.getenv("FGA_CLIENT_SECRET"))
              ));

      var fgaClient = new OpenFgaClient(config);
  }
}

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

var body = new ClientWriteRequest()
        .writes(List.of(
                new ClientTupleKey()
                        .user("user:bob")
                        .relation("viewer")
                        ._object("document:meeting_notes.doc")
        ));

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

curl

Set the environment variables according to the "How to get your API keys"

Set the required environment variables
# For all environments
export FGA_STORE_ID = 'YOUR_STORE_ID' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
export FGA_MODEL_ID = 'YOUR_MODEL_ID' # optional, can be overridden per request, helps reduce latency

export FGA_API_URL = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
export FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
export FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
export FGA_CLIENT_ID = 'YOUR_CLIENT_ID' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
export FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

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" : [{"user":"user:bob","relation":"viewer","object":"document:meeting_notes.doc"}] }, "authorization_model_id": "01HVMMBCMGZNT3SED4Z17ECXCA"}'

CLI

Set the environment variables according to the "How to get your API keys"

Set the required environment variables
# For all environments
export FGA_STORE_ID = 'YOUR_STORE_ID' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
export FGA_MODEL_ID = 'YOUR_MODEL_ID' # optional, can be overridden per request, helps reduce latency

export FGA_API_URL = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
export FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
export FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
export FGA_CLIENT_ID = 'YOUR_CLIENT_ID' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
export FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

fga tuple write --store-id=${FGA_STORE_ID} --model-id=01HVMMBCMGZNT3SED4Z17ECXCA user:bob viewer document:meeting_notes.doc 

Pseudocode

write([
    {
      "user":"user:bob",
      "relation":"viewer",
      "object":"document:meeting_notes.doc"
    }
], authorization_model_id="01HVMMBCMGZNT3SED4Z17ECXCA")

Node.js

Initialize the SDK

// Checkout the "How to Setup the SDK Client" page for more details.
const { CredentialsMethod, OpenFgaClient } = require('@openfga/sdk'); // OR import { CredentialsMethod, OpenFgaClient } from '@openfga/sdk';

// Ensure the environment variables are set
// FGA_API_URL = 'https://api.us1.fga.dev' // 'https://api.eu1.fga.dev' for EU and 'https://api.au1.fga.dev' for AU
// FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
// FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
// FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
// FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

const fgaClient = new OpenFgaClient({
    apiUrl: process.env.FGA_API_URL,
    storeId: process.env.FGA_STORE_ID,
    authorizationModelId: process.env.FGA_MODEL_ID,
    credentials: { // Credentials are not needed if connecting to the Playground API
      method: CredentialsMethod.ClientCredentials,
      config: {
        apiTokenIssuer: process.env.FGA_API_TOKEN_ISSUER,
        apiAudience: process.env.FGA_API_AUDIENCE,
        clientId: process.env.FGA_CLIENT_ID,
        clientSecret: process.env.FGA_CLIENT_SECRET,
      },
    },
});

// Run a check
const { allowed } = await fgaClient.check({
    user: 'user:bob',
    relation: 'can_view',
    object: 'document:meeting_notes.doc',
  }, {
  authorizationModelId: '01HVMMBCMGZNT3SED4Z17ECXCA',
});

// allowed = false

Go

Initialize the SDK

// Checkout the "How to Setup the SDK Client" page for more details.
import (
    "os"

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

// Ensure the environment variables are set
// FGA_API_URL = 'https://api.us1.fga.dev' // 'https://api.eu1.fga.dev' for EU and 'https://api.au1.fga.dev' for AU
// FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
// FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
// FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
// FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

func main() {
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiUrl:               os.Getenv("FGA_API_URL"), 
        StoreId:              os.Getenv("FGA_STORE_ID"),
        AuthorizationModelId: os.Getenv("FGA_MODEL_ID"),
        Credentials: &credentials.Credentials{ // Credentials are not needed if connecting to the Playground API
            Method: credentials.CredentialsMethodClientCredentials,
            Config: &credentials.Config{
                ClientCredentialsClientId:       os.Getenv("FGA_CLIENT_ID"),
                ClientCredentialsClientSecret:   os.Getenv("FGA_CLIENT_SECRET"),
                ClientCredentialsApiAudience:    os.Getenv("FGA_API_AUDIENCE"),
                ClientCredentialsApiTokenIssuer: os.Getenv("FGA_API_TOKEN_ISSUER"),
            },
        },
    })

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

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

body := ClientCheckRequest{
    User:     "user:bob",
    Relation: "can_view",
    Object:   "document:meeting_notes.doc",
}

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

// data = { allowed: false }

.NET

Initialize the SDK

// Checkout the "How to Setup the SDK Client" page for more details.
using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace Example;

// Ensure the environment variables are set
// FGA_API_URL = 'https://api.us1.fga.dev' // 'https://api.eu1.fga.dev' for EU and 'https://api.au1.fga.dev' for AU
// FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
// FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
// FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
// FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

class MyProgram {
    static async Task Main() {
        var configuration = new ClientConfiguration() {
            ApiUrl = Environment.GetEnvironmentVariable("FGA_API_URL"),
            StoreId = Environment.GetEnvironmentVariable("FGA_STORE_ID"),
            AuthorizationModelId = Environment.GetEnvironmentVariable("FGA_MODEL_ID"),
            Credentials = new Credentials() { // Credentials are not needed if connecting to the Playground API
                Method = CredentialsMethod.ClientCredentials,
                Config = new CredentialsConfig() {
                    ApiTokenIssuer = Environment.GetEnvironmentVariable("FGA_API_TOKEN_ISSUER"),
                    ApiAudience = Environment.GetEnvironmentVariable("FGA_API_AUDIENCE"),
                    ClientId = Environment.GetEnvironmentVariable("FGA_CLIENT_ID"),
                    ClientSecret = Environment.GetEnvironmentVariable("FGA_CLIENT_SECRET"),
                }
            }
        };
        var fgaClient = new OpenFgaClient(configuration);
    }
}

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

// response.Allowed = false

Python

Initialize the SDK

# Checkout the "How to Setup the SDK Client" page for more details.

import os
import openfga_sdk
from openfga_sdk.client import OpenFgaClient, ClientConfiguration
from openfga_sdk.credentials import Credentials, CredentialConfiguration

# FGA_API_URL = 'https://api.us1.fga.dev' // 'https://api.eu1.fga.dev' for EU and 'https://api.au1.fga.dev' for AU
# FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
# FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
# FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
# FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
# FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
# FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

async def main():
    credentials = Credentials(
      method='client_credentials',
      configuration=CredentialConfiguration(
          api_issuer= os.environ.get('FGA_API_TOKEN_ISSUER'),
          api_audience= os.environ.get('FGA_API_AUDIENCE'),
          client_id= os.environ.get('FGA_CLIENT_ID'),
          client_secret= os.environ.get('FGA_CLIENT_SECRET'),
      )
    )

    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:bob",
    relation="can_view",
    object="document:meeting_notes.doc",
)

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;
import dev.openfga.sdk.api.configuration.ClientCredentials;
import dev.openfga.sdk.api.configuration.Credentials;

// FGA_API_URL = 'https://api.us1.fga.dev' for Dev Preview and Early Access / 'https://api.playground.fga.dev' for the FGA Playground
// FGA_STORE_ID = 'YOUR_STORE_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
// FGA_MODEL_ID = 'YOUR_MODEL_ID' - optional, can be overridden per request, helps reduce latency
// FGA_API_TOKEN_ISSUER = 'auth.fga.dev' for Dev Preview and Early Access / not needed for the FGA Playground
// FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' for Dev Preview and Early Access / not needed for the FGA Playground
// FGA_CLIENT_ID = 'YOUR_CLIENT_ID' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page / not needed for the FGA Playground
// FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' - Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page / not needed for the FGA Playground

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_MODEL_ID")) // Optional, can be overridden per request
              .credentials(new Credentials(
                  new ClientCredentials()
                          .apiTokenIssuer(System.getenv("FGA_API_TOKEN_ISSUER"))
                          .apiAudience(System.getenv("FGA_API_AUDIENCE"))
                          .clientId(System.getenv("FGA_CLIENT_ID"))
                          .clientSecret(System.getenv("FGA_CLIENT_SECRET"))
              ));

      var fgaClient = new OpenFgaClient(config);
  }
}

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

var body = new ClientCheckRequest()
        .user("user:bob")
        .relation("can_view")
        ._object("document:meeting_notes.doc");

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

// response.getAllowed() = false 

CLI

Set the environment variables according to the "How to get your API keys"

Set the required environment variables
# For all environments
export FGA_STORE_ID = 'YOUR_STORE_ID' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
export FGA_MODEL_ID = 'YOUR_MODEL_ID' # optional, can be overridden per request, helps reduce latency

export FGA_API_URL = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
export FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
export FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
export FGA_CLIENT_ID = 'YOUR_CLIENT_ID' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
export FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

fga query check --store-id=$FGA_STORE_ID --model-id=01HVMMBCMGZNT3SED4Z17ECXCA user:bob can_view document:meeting_notes.doc

# Response: {"allowed":false}

curl

Set the environment variables according to the "How to get your API keys"

Set the required environment variables
# For all environments
export FGA_STORE_ID = 'YOUR_STORE_ID' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
export FGA_MODEL_ID = 'YOUR_MODEL_ID' # optional, can be overridden per request, helps reduce latency

export FGA_API_URL = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
export FGA_API_TOKEN_ISSUER = 'auth.fga.dev'
export FGA_API_AUDIENCE = 'https://api.us1.fga.dev/' // 'https://api.eu1.fga.dev/' for EU and 'https://api.au1.fga.dev/' for AU
export FGA_CLIENT_ID = 'YOUR_CLIENT_ID' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page
export FGA_CLIENT_SECRET = 'YOUR_CLIENT_SECRET' # Get this from your store settings in the dashboard, refer to the "How to get your API Keys" page

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:bob","relation":"can_view","object":"document:meeting_notes.doc"}}'

# Response: {"allowed":false}

Pseudocode

check(
  user = "user:bob", // check if the user `user:bob`
  relation = "can_view", // has an `can_view` relation
  object = "document:meeting_notes.doc", // with the object `document:meeting_notes.doc`
   authorization_id = "01HVMMBCMGZNT3SED4Z17ECXCA"
);

Reply: false

Playground

is user:bob related to document:meeting_notes.doc as can_view?


# Response: A red object indicating that the response from the API is `{"allowed":false}`

Call flow for check and write. Notice that before cross-region replication happens, check will return false even though the tuple has already been written.

Related Sections

Check the following sections for more on how to check, read and expand.

Check, Read and Expand

Comparison Between Check, Read And Expand API Calls.

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