API Authentication

Learn about authentication methods with Visier APIs.

Overview

To use Visier's public APIs, you must first authenticate yourself as a Visier user who is allowed to use Visier APIs. You can authenticate yourself in several ways, including OAuth 2.0 with Open ID Connect (OIDC) or basic authentication (username and password).

Caution: When passing your credentials to authenticate yourself, always put credentials in the request body. Do not pass sensitive data like authentication credentials in API URLs.

The following sample request shows the correct way to pass authentication credentials. In this basic authentication example, the username and password credentials are passed in the request body.

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Sample request: Request a security token

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curl -X POST --url https://jupiter.api.visier.io/v1/admin/visierSecureToken -d "username=john@jupiter.com" -d "password=Password123"

The following diagram describes the decisions to make to choose the right authentication method for you. Before using the diagram, familiarize yourself with these terms:

Application: The method through which you're accessing Visier APIs.
Spreadsheet-like: Access to Visier APIs through a spreadsheet; for example, the Data Export API. For more information, see Data Exports.
Interactive: Access to Visier APIs through a third-party application; for example, the Power BI and Tableau connectors. For more information, see Data Out Connectors.
Batch: Access to Visier APIs through HTTP; for example, calling Visier APIs through Postman. For more information, see Visier APIs.

After you receive authentication tokens, such as a security token or JSON Web Token (JWT), you can pass the tokens in the headers of your API call to authenticate the call. For more information about headers, see Headers.

In addition to the authentication token, every API call requires an API key. API keys are unique to your Visier tenant; every API user in your Visier tenant uses the same API key to authorize API calls. For more information, see Generate an API Key.

Authentication methods

You can use OAuth 2.0 or basic authentication to access Visier's public APIs.

OAuth 2.0 with OIDC

You can use OAuth 2.0 to authenticate with Visier APIs. Visier supports authorization_code, password, or saml2-bearer grant types. To use OAuth 2.0 with Visier, you must first register a client application. For more information, see Register a Client Application. After you register a client application, you will have the required OAuth 2.0 credentials, like callback URI, client ID, and client secret.

To use OAuth 2.0 with OIDC authentication, see "OAuth2" in API Reference.

Authorization code

The following diagram shows the OAuth 2.0 authorization code grant sequence.

Enables three-legged OAuth. We recommend this authentication method as the most secure because it delegates authentication to a designated IdP, meaning the client application doesn't access the password.

The authorization_code grant type requires a registered callback URI that the authorizing server will call with an authorization code. That authorization code is then used to request the JWT. You can then pass the JWT as a bearer token in your API calls.

Tip: For an example of this authorization method, see OAuth 2.0 Authorization Code Grant Type.

The following sample request shows how to request an authorization code.

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Sample request: Request authorization code

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import { NextResponse } from 'next/server';
const clientId = process.env.VISIER_CLIENT_ID
const host = process.env.VISIER_HOST
const apiKey = process.env.VISIER_APIKEY

export async function GET() {
    const isDefined = id => id !== undefined && id !== ""

    if (isDefined(clientId) && isDefined(host) && isDefined(apiKey)) {
        const url = `${host}/v1/auth/oauth2/authorize?client_id=${clientId}&response_type=code&apikey=${apiKey}`
        return NextResponse.json({ url });
    }
    console.error("Missing either Client ID, host or API Key");
    return new Response({ message: "Missing OAuth 2.0 credentials" }, { status: 401 })
}

The following sample request shows calling the callback URI with an authorization code to request the JWT.

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Sample request: Server calls callback URI with authorization code to retrieve JWT

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"use client"
import { useRouter, useSearchParams } from "next/navigation";
import React, { useEffect, useState } from "react";
import useCredsStore from '@/store/credsStore';

export default function Callback() {
    // router for query args navigation back to the main page
    const router = useRouter();
    const searchParams = useSearchParams();

    // code state to prevent multiple token calls
    const code = searchParams.get("code");
    const [isAuthenticated, setIsAuthenticated] = useState(false);

    const [setJWT, setConfig] = useCredsStore(s => [s.setJWT, s.setConfig]);
    
    const callToken = async () => {
        const response = await fetch("/oauth2/token?code=" + code);
        if (response.ok) {
            const responseBody = await response.json();

            setJWT(responseBody.jwt);
            setConfig(responseBody.config)
            
            setIsAuthenticated(true);
        }
    }
    useEffect(() => {
        if (!isAuthenticated) {
            callToken();
        }
    }, [isAuthenticated]);

    useEffect(() => {
        if (isAuthenticated) {
            router.replace("/")
        }
    }, [isAuthenticated]);


    return (<p>Redirecting...</p>)
}

The following sample request shows how to pass the JWT as a bearer token to authorize your Visier API call.

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Sample request: Use JWT as a bearer token in API call

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import axios from 'axios';

/**
 * General wrapper for making Visier Public API calls.
 * 
 * @param {*} req Request definition containing the Visier API request details
 * @returns The response payload from the Visier API
 */
export async function POST(req) {
    const delegateRequestBody = await req.json();
    const instance = makeInstance(delegateRequestBody);
    let responsePromise;

    switch (delegateRequestBody.method) {
        case 'POST':
            responsePromise = instance.post(delegateRequestBody.url, delegateRequestBody.body).then(makeSuccesResponse).catch(makeErrorResponse)
            break;

        case 'GET':
        default:
            responsePromise = instance.get(delegateRequestBody.url).then(makeSuccesResponse).catch(makeErrorResponse)
            break;
    }

    return responsePromise;
}

/**
 * Make an axios instance from the provided request details.
 * 
 * @param {*} req 
 */
const makeInstance = req => {
    const config = req.config;
    const configWithAuth = {
        ...config,
        headers: {
            ...config.headers,
            Authorization: req.auth
        }
    }
    return axios.create(configWithAuth);
}

const makeSuccesResponse = response => {
    return new Response(JSON.stringify(response.data), { status: response.status})
};

const makeErrorResponse = error => {
    return new Response(error, { status: error.status })
}

Password

The following diagram shows the OAuth 2.0 password grant sequence.

Enables two-legged OAuth. We provide the password grant type for backwards compatibility and only recommend using password where it is not possible to use authorization_code.

The password grant type requires a client ID, client secret, username, and password to log in with. It returns a JWT that you can then pass as a bearer token in your API calls.

Tip: For an example of this authorization method, see OAuth 2.0 Password Grant Type.

The following sample request shows how to use the password grant type to request a JWT.

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Sample request: Use password grant type to request JWT

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# Assign local variables
apikey=$VISIER_APIKEY
vhost=$VISIER_HOST
client_id=$VISIER_CLIENT_ID
client_secret=$VISIER_CLIENT_SECRET
vuser=$VISIER_USERNAME
vpassword=$VISIER_PASSWORD
grant_type="password"

# Compose request body and request token from password grant
body="grant_type=$grant_type&client_id=$client_id&scope=read&username=$vuser&password=$vpassword"
JWT=$(curl -s -X POST \
        "$vhost/v1/auth/oauth2/token" \
        -H "apikey: $apikey" \
        -H "Content-Type: application/x-www-form-urlencoded" \
        -d $body \
        -u "$client_id:$client_secret")
export JWT

SAML2 bearer

The following diagram shows the OAuth 2.0 SAML2 bearer grant sequence.

Enables SAML OAuth. We recommend this method if you enabled single sign-on (SSO) with Visier.

The saml2-bearer grant type requires a client ID, client secret, and Identity Provider (IdP). To set up your IdP with Visier, see Set Up Single Sign-On. It returns a JWT that you can pass as a bearer token in your API calls.

Tip: For an example of this authorization method, see Visier OAuth Sample.

The following sample request shows how to use the saml2-bearer grant type to request a JWT.

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Sample request: Use saml2-bearer grant type to request JWT

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const express = require('express');
const bodyParser = require('body-parser');
const axios = require('axios');

const app = express();
const port = process.env.PORT || 3000;

if (!(process.env.VISIER_HOST && process.env.VISIER_APIKEY && process.env.VISIER_CLIENT_ID && process.env.VISIER_CLIENT_SECRET)) {
    console.error("Define VISIER_HOST, VISIER_APIKEY, VISIER_CLIENT_ID, and VISIER_CLIENT_SECRET environment variables.");
    process.exit(1);
}

app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());

// Endpoint called by the client Identity Provider (IdP) to exchange the SAMLResponse for a JWT
app.post('/visier-jwt', async (req, res) => {
    try {
        const { SAMLResponse } = req.body;

        // Construct OAuth token request
        const tokenEndpoint = `${process.env.VISIER_HOST}/v1/auth/oauth2/token`;
        const grantType = 'urn:ietf:params:oauth:grant-type:saml2-bearer';

        const options = {
            method: 'post',
            url: tokenEndpoint,
            data: {
                grant_type: grantType,
                assertion: SAMLResponse,
                client_id: process.env.VISIER_CLIENT_ID,
                client_secret: process.env.VISIER_CLIENT_SECRET,
            },
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
                apikey: process.env.VISIER_APIKEY,
            },
        }
        // Issue the OAuth token request
        const response = await axios(options);

        // Extract JWT from the response
        const access_token = response.data.access_token;

        // Call an API using the JWT for authentication to provde that the JWT is valid
        const endpointUrl = `${process.env.VISIER_HOST}/v1/data/model/metrics/employeeCount`
        const headers = {
          apikey: process.env.VISIER_APIKEY,
          Authorization: 'Bearer ' + access_token
        }
        const metricResponse = await axios.get(endpointUrl, { headers });
        const metric = metricResponse.data

        res.status(200).json({ metric });
      } catch (error) {
        console.error('Error requesting JWT:', error.message);
        res.status(500).json({ error: 'Internal server error', message: error.message });
      }
});

app.listen(port, () => {
    console.log(`Server running at http://localhost:${port}`);
});

Basic authentication

Basic authentication requires your Visier username and password to authenticate you. It returns an ASID token that you can use in your API calls.

To authenticate with basic authentication, see "Basic Authentication" in API Reference.

The following sample request shows how to use basic authentication to request a secure ASID token.

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Sample request: Request a security token

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curl -X POST --url https://jupiter.api.visier.io/v1/admin/visierSecureToken -d "username=john@jupiter.com" -d "password=Password123"

If successful, you'll get the following sample response that returns a security token.

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200 OK

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fb87a8...KLwoABUvFosc

After you retrieve your security token, subsequent calls to the API use the ASID token in a cookie to indicate an authenticated session, as shown in the following sample request.

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Sample request: Call the Data Query API with an authenticated session

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curl -X POST --url https://jupiter.api.visier.io/v1/data/query/aggregate  -H "apikey:12345" -H "Cookie:VisierASIDToken=abc123" --data '{
      "query": {
            "source": {
                  "metric": "employeeCount"
          },
             "timeIntervals": {
                  "fromInstant": "1593561600000",
                  "intervalPeriodType": "MONTH",
                  "intervalCount": 12
          }
  },
      "options": {
            "calendarType": "GREGORIAN_CALENDAR"
  }
}'

Tip: The security token has a 60 minute expiration window. Ensure that you systematically request a new security token when one expires. If your call uses an expired token, the response returns HTTP error code 401 (Unauthorized).

Headers

In an API call, a header specifies your authorization to access the endpoint and sometimes specifies information about the API response.

Visier's public APIs support the following headers.

apikey: Your Visier API key. Required in all API calls. For more information, see Generate an API Key.
Authorization: The JWT for OAuth 2.0. Required in API calls using OAuth 2.0 authentication. For more information, see OAuth 2.0 with OIDC.
Cookie:VisierASIDToken: A security token. Required in API calls using basic authentication. For more information, see Basic authentication.
Content-Type: The content type that you're sending in the API request body. Default is application/json.
Accept: The content type that you want the API response returned in. Supported in all Data Query API endpoints. Valid values are application/json, application/jsonlines, or text/csv. Default is application/json.
ProjectID: The project UUID in which to make your changes. Supported in the Projects API, Users API v1, User Groups API v2, and Permissions API. For more information, see Projects API.

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