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    0.6.0 • Public • Published

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    Passport is Express-compatible authentication middleware for Node.js.

    Passport's sole purpose is to authenticate requests, which it does through an extensible set of plugins known as strategies. Passport does not mount routes or assume any particular database schema, which maximizes flexibility and allows application-level decisions to be made by the developer. The API is simple: you provide Passport a request to authenticate, and Passport provides hooks for controlling what occurs when authentication succeeds or fails.


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    Status: Build Coverage Dependencies


    $ npm install passport



    Passport uses the concept of strategies to authenticate requests. Strategies can range from verifying username and password credentials, delegated authentication using OAuth (for example, via Facebook or Twitter), or federated authentication using OpenID.

    Before authenticating requests, the strategy (or strategies) used by an application must be configured.

    passport.use(new LocalStrategy(
      function(username, password, done) {
        User.findOne({ username: username }, function (err, user) {
          if (err) { return done(err); }
          if (!user) { return done(null, false); }
          if (!user.verifyPassword(password)) { return done(null, false); }
          return done(null, user);

    There are 480+ strategies. Find the ones you want at:


    Passport will maintain persistent login sessions. In order for persistent sessions to work, the authenticated user must be serialized to the session, and deserialized when subsequent requests are made.

    Passport does not impose any restrictions on how your user records are stored. Instead, you provide functions to Passport which implements the necessary serialization and deserialization logic. In a typical application, this will be as simple as serializing the user ID, and finding the user by ID when deserializing.

    passport.serializeUser(function(user, done) {
    passport.deserializeUser(function(id, done) {
      User.findById(id, function (err, user) {
        done(err, user);


    To use Passport in an Express or Connect-based application, configure it with the required passport.initialize() middleware. If your application uses persistent login sessions (recommended, but not required), passport.session() middleware must also be used.

    var app = express();
    app.use(require('serve-static')(__dirname + '/../../public'));
    app.use(require('body-parser').urlencoded({ extended: true }));
    app.use(require('express-session')({ secret: 'keyboard cat', resave: true, saveUninitialized: true }));

    Authenticate Requests

    Passport provides an authenticate() function, which is used as route middleware to authenticate requests.'/login', 
      passport.authenticate('local', { failureRedirect: '/login' }),
      function(req, res) {


    Passport has a comprehensive set of over 480 authentication strategies covering social networking, enterprise integration, API services, and more.

    Search all strategies

    There is a Strategy Search at

    The following table lists commonly used strategies:

    Strategy Protocol Developer
    Local HTML form Jared Hanson
    OpenID OpenID Jared Hanson
    BrowserID BrowserID Jared Hanson
    Facebook OAuth 2.0 Jared Hanson
    Google OpenID Jared Hanson
    Google OAuth / OAuth 2.0 Jared Hanson
    Twitter OAuth Jared Hanson
    Azure Active Directory OAuth 2.0 / OpenID / SAML Azure


    Related Modules

    The modules page on the wiki lists other useful modules that build upon or integrate with Passport.


    The MIT License

    Copyright (c) 2011-2021 Jared Hanson <>


    npm i passport

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    • jaredhanson