Setup SDK Client for Store

This article explains how to build an OpenFGA client by using the SDKs.

The first step is to ensure that you have created a store by following these steps.

Next, depending on the authentication scheme you want to use, there are different ways to build the client.

Using No Authentication

This is a simple setup but it is not recommended for production use.

Node.js

const { OpenFgaClient } = require('@openfga/sdk'); // OR import { OpenFgaClient } from '@openfga/sdk';

const openFga = new OpenFgaClient({
    apiScheme: process.env.FGA_API_SCHEME, // optional. Can be "http" or "https". Defaults to "https"
    apiHost: process.env.FGA_API_HOST, // required, define without the scheme (e.g. api.fga.example instead of https://api.fga.example)
    storeId: process.env.FGA_STORE_ID, // optional, not needed for \`CreateStore\` and \`ListStores\`, required before calling for all other methods
    authorizationModelId: process.env.FGA_MODEL_ID, // optional, can be overridden per request
});

Go

import (
    "os"

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

func main() {
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiScheme:      os.Getenv("FGA_API_SCHEME"), // optional. Can be "http" or "https". Defaults to "https"
        ApiHost:        os.Getenv("FGA_API_HOST"), // required, define without the scheme (e.g. api.fga.example instead of 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: openfga.PtrString(os.Getenv("FGA_MODEL_ID")),  // optional, can be overridden per request
    })

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

.NET

using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace ExampleApp;

class MyProgram {
    static async Task Main() {
        var configuration = new ClientConfiguration() {
            ApiScheme = Environment.GetEnvironmentVariable("FGA_API_SCHEME"), // optional. Can be "http" or "https". Defaults to "https"
            ApiHost = Environment.GetEnvironmentVariable("FGA_API_HOST"), // required, define without the scheme (e.g. api.fga.example instead of 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);
    }
}

Python

import os
import openfga_sdk
from openfga_sdk.client import OpenFgaClient

configuration = openfga_sdk.Configuration(
    api_scheme = os.environ.get('FGA_API_SCHEME'), # optional. Can be "http" or "https". Defaults to "https"
    api_host = os.environ.get('FGA_API_HOST'), # required, define without the scheme (e.g. api.fga.example instead of 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
    model_id = os.environ.get('FGA_MODEL_ID'), # optional, can be overridden per request
)

async with OpenFgaClient(configuration) as fga_client:
    api_response = await fga_client.read_authorization_models() // call requests
    await fga_client.close() // close when done

CLI

export FGA_SERVER_URL=https://api.fga.example # optional. Defaults to http://localhost:8080
export FGA_STORE_ID=YOUR_STORE_ID # required for all calls except \`store create\`, \`store list\` and \`model validate\`
export FGA_MODEL_ID=YOUR_MODEL_ID # optional, can be overridden per request, latest is used if this is empty

Using Shared Key Authentication

If you want to use shared key authentication, you need to generate a random string that will work as secret and set that key when building your OpenFGA server. Then, when building the client, set it as environment variable FGA_API_TOKEN.

Warning

If you are going to use this setup in production, you should enable TLS in your OpenFGA server. Please see the Production Checklist.

Node.js

const { CredentialsMethod, OpenFgaClient } = require('@openfga/sdk'); // OR import { CredentialsMethod, OpenFgaClient } from '@openfga/sdk';

const openFga = new OpenFgaClient({
    apiScheme: process.env.FGA_API_SCHEME, // optional. Can be "http" or "https". Defaults to "https"
    apiHost: process.env.FGA_API_HOST, // required, define without the scheme (e.g. api.fga.example instead of https://api.fga.example)
    storeId: process.env.FGA_STORE_ID, // optional, not needed for \`CreateStore\` and \`ListStores\`, required before calling for all other methods
    authorizationModelId: process.env.FGA_MODEL_ID, // optional, can be overridden per request
    credentials: {
        method: CredentialsMethod.ApiToken,
        config: {
            token: process.env.$FGA_API_TOKEN,
        },
    }
});

Go

import (
    "os"

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

func main() {
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiScheme:      os.Getenv("FGA_API_SCHEME"), // optional. Can be "http" or "https". Defaults to "https"
        ApiHost:        os.Getenv("FGA_API_HOST"), // required, define without the scheme (e.g. api.fga.example instead of 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: openfga.PtrString(os.Getenv("FGA_MODEL_ID")),  // optional, can be overridden per request
        Credentials: &credentials.Credentials{
            Method: credentials.CredentialsMethodApiToken,
            Config: &credentials.Config{
                ApiToken: os.Getenv("OPENFGA_API_TOKEN"), // will be passed as the "Authorization: Bearer ${ApiToken}" request header
            },
        },
    })

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

.NET

using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace ExampleApp;

class MyProgram {
    static async Task Main() {
        var configuration = new ClientConfiguration() {
            ApiScheme = Environment.GetEnvironmentVariable("FGA_API_SCHEME"), // optional. Can be "http" or "https". Defaults to "https"
            ApiHost = Environment.GetEnvironmentVariable("FGA_API_HOST"), // required, define without the scheme (e.g. api.fga.example instead of 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
            Credentials = new Credentials() {
                Method = CredentialsMethod.ApiToken,
                Config = new CredentialsConfig() {
                    ApiToken = Environment.GetEnvironmentVariable("FGA_API_TOKEN")
                },
            },
        };
        var fgaClient = new OpenFgaClient(configuration);
    }
}

Python

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

credentials = Credentials(method='api_token',
    configuration=CredentialConfiguration(api_token=os.environ.get(FGA_API_TOKEN)))
configuration = openfga_sdk.Configuration(
    api_scheme = os.environ.get('FGA_API_SCHEME'), # optional. Can be "http" or "https". Defaults to "https"
    api_host = os.environ.get('FGA_API_HOST'), # required, define without the scheme (e.g. api.fga.example instead of 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
    model_id = os.environ.get('FGA_MODEL_ID'), # optional, can be overridden per request
    credentials = credentials,
)

async with OpenFgaClient(configuration) as fga_client:
    api_response = await fga_client.read_authorization_models() // call requests
    await fga_client.close() // close when done

CLI

export FGA_SERVER_URL=https://api.fga.example # optional. Defaults to http://localhost:8080
export FGA_STORE_ID=YOUR_STORE_ID # required for all calls except \`store create\`, \`store list\` and \`model validate\`
export FGA_MODEL_ID=YOUR_MODEL_ID # optional, can be overridden per request, latest is used if this is empty
export FGA_API_TOKEN=YOUR_API_TOKEN

Using Client Credentials Flow

Note

The OpenFGA server does not support the client credentials flow, however if you or your OpenFGA provider have implemented a client credentials wrapper on top, follow the instructions here to have the OpenFGA client handle the token exchange for you.

Node.js

const { CredentialsMethod, OpenFgaClient } = require('@openfga/sdk'); // OR import { CredentialsMethod, OpenFgaClient } from '@openfga/sdk';

const openFga = new OpenFgaClient({
    apiScheme: process.env.FGA_API_SCHEME, // optional. Can be "http" or "https". Defaults to "https"
    apiHost: process.env.FGA_API_HOST, // required, define without the scheme (e.g. api.fga.example instead of https://api.fga.example)
    storeId: process.env.FGA_STORE_ID, // optional, not needed for \`CreateStore\` and \`ListStores\`, required before calling for all other methods
    authorizationModelId: process.env.FGA_MODEL_ID, // optional, can be overridden per request
    credentials: {
        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,
        },
    }
});

Go

import (
    "os"

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

func main() {
    fgaClient, err := NewSdkClient(&ClientConfiguration{
        ApiScheme:      os.Getenv("FGA_API_SCHEME"), // optional. Can be "http" or "https". Defaults to "https"
        ApiHost:        os.Getenv("FGA_API_HOST"), // required, define without the scheme (e.g. api.fga.example instead of 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: openfga.PtrString(os.Getenv("FGA_MODEL_ID")),  // optional, can be overridden per request
        Credentials: &credentials.Credentials{
            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
    }
}

.NET

using OpenFga.Sdk.Client;
using OpenFga.Sdk.Client.Model;
using OpenFga.Sdk.Model;
using Environment = System.Environment;

namespace ExampleApp;

class MyProgram {
    static async Task Main() {
        var configuration = new ClientConfiguration() {
            ApiScheme = Environment.GetEnvironmentVariable("FGA_API_SCHEME"), // optional. Can be "http" or "https". Defaults to "https"
            ApiHost = Environment.GetEnvironmentVariable("FGA_API_HOST"), // required, define without the scheme (e.g. api.fga.example instead of 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
                   Credentials = new Credentials() {
                        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);
    }
}

Python

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

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 = openfga_sdk.Configuration(
    api_scheme = os.environ.get('FGA_API_SCHEME'), # optional. Can be "http" or "https". Defaults to "https"
    api_host = os.environ.get('FGA_API_HOST'), # required, define without the scheme (e.g. api.fga.example instead of 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
    model_id = os.environ.get('FGA_MODEL_ID'), # optional, can be overridden per request
    credentials = credentials,
)

async with OpenFgaClient(configuration) as fga_client:
    api_response = await fga_client.read_authorization_models() // call requests
    await fga_client.close() // close when done

CLI

export FGA_SERVER_URL=https://api.fga.example # optional. Defaults to http://localhost:8080
export FGA_STORE_ID=YOUR_STORE_ID # required for all calls except \`store create\`, \`store list\` and \`model validate\`
export FGA_MODEL_ID=YOUR_MODEL_ID # optional, can be overridden per request, latest is used if this is empty
export FGA_API_TOKEN_ISSUER=YOUR_API_TOKEN_ISSUER
export FGA_API_AUDIENCE=YOUR_API_AUDIENCE
export FGA_CLIENT_ID=YOUR_CLIENT_ID
export FGA_CLIENT_SECRET=YOUR_CLIENT_SECRET