Complete a WebAuthn Passkey Authentication
This API is used to complete a WebAuthn authentication ceremony by providing the values returned from the WebAuthn JavaScript API call. The API will validate the request against configured passkey requirements for the workflow and the one-time challenge generated and returned by Start a WebAuthn Passkey Assertion or Authentication.
Request#
OpenAPI Spec
Request Headers#
X-FusionAuth-TenantId String optional The unique Id of the tenant used to scope this API request.
The tenant Id is not required on this request even when more than one tenant has been configured because the tenant can be identified based upon the request parameters or it is otherwise not required.
Specify a tenant Id on this request when you want to ensure the request is scoped to a specific tenant. The tenant Id may be provided through this header or by using a tenant locked API key to achieve the same result.
See Making an API request using a Tenant Id for additional information.
Request Cookies#
fusionauth.trust String optional The Multi-Factor Trust identifier returned by the Multi-Factor Login API response. This value may be provided to bypass the Multi-Factor challenge when a User has Multi-Factor enabled. When this cookie exists on the request it will take precedence over the twoFactorTrustId if provided in the request body.
Request Body#
The credential in the request body contains data returned by the WebAuthn JavaScript API call. The credential.response.authenticatorData, credential.response.clientDataJSON, credential.response.signature, and credential.response.userHandle fields must be converted to base64url-encoded strings for the FusionAuth API request. See WebAuthn JavaScript API Binary Format for details.
credential.clientExtensionResults Object optional The results for WebAuthn extensions requested during authentication. FusionAuth does not currently support any WebAuthn authentication extensions.
credential.id String required A base64url-encoded version of the credential Id used by the authenticator for this ceremony.
credential.rpId String optional If the tenant configuration overrides the Relying Party Id, this parameter should match tenant.webAuthnConfiguration.relyingPartyId, otherwise the value should be omitted from the request object.
credential.response.authenticatorData String required The base64url-encoded authenticator data from the WebAuthn JavaScript API response, which includes information on the passkey used to complete the ceremony and other data important for validation. See Converting ArrayBuffer to base64url-encoded String for details on converting this value for the FusionAuth API request.
credential.response.clientDataJSON String required The base64url-encoded client data from the WebAuthn JavaScript API response. This contains important information for the WebAuthn authentication validation process, including the one-time challenge generated when the registration ceremony began. See Converting ArrayBuffer to base64url-encoded String for details on converting this value for the FusionAuth API request.
credential.response.signature String required The base64url-encoded signature from the WebAuthn JavaScript API response. The authenticator generates the signature using the selected passkey's private key by signing over the binary concatenation of credential.response.authenticatorData and the SHA-256 hash of credential.response.clientDataJSON before they are converted to base64url-encoded strings. See Converting ArrayBuffer to base64url-encoded String for details on converting this value for the FusionAuth API request.
credential.response.userHandle String optional The base64url-encoded user handle from the WebAuthn JavaScript API response. This field is only required when the user was not identified prior to the authentication ceremony through the use of a client-side discoverable passkey. See Converting ArrayBuffer to base64url-encoded String for details on converting this value for the FusionAuth API request.
credential.type String required The credential type of the passkey. The only value supported by WebAuthn is public-key.
origin String optional Ignored since 1.69.0. Instead, FusionAuth validates the origin from the signed WebAuthn client data.
This field is required prior to version 1.69.0. The browser request origin during the authentication ceremony. For example, example.com.
rpId String optional Ignored since 1.69.0. Instead, FusionAuth resolves the Relying Party Id from the tenant configuration and validates the Id against the signed authenticator data.
This field is required prior to version 1.69.0. If the tenant configuration overrides the Relying Party Id, this parameter should match tenant.webAuthnConfiguration.relyingPartyId, otherwise the value should be the browser request origin's effective domain during the ceremony.
twoFactorTrustId String optional The Multi-Factor Trust identifier returned by the Multi-Factor Login API response. This value may be provided to bypass the Multi-Factor challenge when a User has Multi-Factor enabled.
Example Request JSON
{
"credential": {
"id": "HdN9wqP9mqOonacmiM2gIjASFYg",
"response": {
"authenticatorData": "mPsv4VW-wth0V9gzsxWRFn-1SyC9gM4-QC4ptMFDNhUFAAAAKQ==",
"clientDataJSON": "eyJjaGFsbGVuZ2UiOiJTeTYzQldla285blFsYzVOQmVWcE1BWjFtQ0hvdzBXUXVFeDRJU2xuQzR3IiwiY3Jvc3NPcmlnaW4iOmZhbHNlLCJvcmlnaW4iOiJodHRwczovL2Z1c2lvbmF1dGguaW8iLCJ0eXBlIjoid2ViYXV0aG4uZ2V0In0=",
"signature": "MEUCIQDUwlDp9aNcYQmvpVGLJ35H8lRWjWsfjVsfPf_5HhY3GwIgahBhISBxv82ZS4ll8TZiJp5bIN2CGx_-VjUymfzKqGA=",
"userHandle": "NzAzZmUyZDItMmQzOS00Y2I3LWI3NmQtMGI5OTE4ZWQyNDU3"
},
"type": "public-key"
},
"origin": "https://auth.piedpiper.com",
"rpId": "piedpiper.com"
}
Response#
The response for this API contains the User object.
Response Codes
| Code | Description |
|---|---|
| 200 | The authentication was successful. The response will contain the User object that was authenticated. |
| 202 | The user was authenticated successfully. The user is not registered for the application specified by the applicationId on the request. The response will contain the User object that was authenticated. |
| 203 | The user was authenticated successfully. The user is required to change their password, the response will contain the changePasswordId to be used on the Change Password API. Since version 1.15.0, the response will also contain a changePasswordReason field which can have one of the following values:
Example Response JSON |
| 212 | The user was authenticated successfully. The user's email address (if an email address or username was used to authenticate) or phone number has not yet been verified. The response will contain the User object that was authenticated. If the tenant verification strategy has been set to FormField, the response will contain the verification Id that was generated for the user. |
| 213 | The user was authenticated successfully. The user's registration has not yet been verified. The response will contain the User object that was authenticated. If the application's emailConfiguration.verificationStrategy has been set to FormField, the response will contain the registrationVerificationId that was generated for the user. Prior to version 1.27.0, this status code was not returned, and you will see a 200 instead. |
| 242 | The user was authenticated successfully. The user has two-factor authentication enabled. Since version 1.42.0, this status code is also returned when two-factor authentication is required. The response will contain the twoFactorId to be used on the Complete Two-Factor Authentication API.Example Response JSON |
| 400 | The request was invalid and/or malformed. The response will contain an Errors JSON Object with the specific errors. |
| 404 | The user was not found or the password was incorrect. The response will be empty. |
| 409 | The user is currently in an action that has prevented login. The response will contain the actions that prevented login. Example Response JSON |
| 410 | The user has expired. The response will be empty. |
| 423 | The user is locked and cannot login. The response will be empty. Prior to version 1.9.0 a 404 status code will be returned instead. |
| 500 | There was an internal error. A stack trace is provided and logged in the FusionAuth log files. The response will be empty. |
| 503 | The search index is not available or encountered an exception so the request cannot be completed. The response will contain a JSON body. |
| 504 | One or more Webhook endpoints returned an invalid response or were unreachable. Based on the transaction configuration for this event your action cannot be completed. A stack trace is provided and logged in the FusionAuth log files. |
Response Body#
emailVerificationId String An email verification Id, which is needed when performing your own email verification using the /api/user/verify-email API.
This field is only returned when the tenant.emailConfiguration.verificationStrategy is set to FormField.
identityVerificationId String Available since 1.59.0An identity verification Id, which is needed when performing your own identity verification using the /api/identity/verify API.
This field is only returned under the following conditions, based on the identity that was used to log in:
- An email address - the tenant.emailConfiguration.verificationStrategy is set to
FormField. - A phone number - the tenant.phoneConfiguration.verificationStrategy is set to
FormField.
refreshToken String The refresh token that can be used to obtain a new access token once the provided one has expired.
Because a refresh token is per user and per application, this value will only be returned when an applicationId was provided on the login request and the user is registered to the application.
You must explicitly allow generation of refresh tokens when using the Login API.
Configure the application.loginConfiguration.generateRefreshTokens setting via the API or enable the setting by navigating to the Application -> My Application -> Security tab.
refreshTokenId String Available since 1.37.0When the refreshToken is returned in the response, this field will also be returned. This unique Id is the persistent identifier for this refresh token, and will not change even when using one-time use refresh tokens. This value may optionally be used to revoke the token using the Refresh Token API.
state Object If authenticated using a One Time Password and state was provided during the Change Password request this value will be returned exactly as it was provided.
token String Available since 1.16.0The access token, this string is an encoded JSON Web Token (JWT).
When the user will be sent a setup password email or sms message, this token will not be returned.
tokenExpirationInstant Long Available since 1.33.0The instant the token will expire. If the response does not contain a token, this field will also be omitted from the response.
user.active Boolean True if the User is active. False if the User has been deactivated. Deactivated Users will not be able to log in.
user.birthDate String The User's birthdate formatted as YYYY-MM-DD
user.breachedPasswordLastCheckedInstant Long The instant this user's password was last checked to determine if it is compromised.
user.connectorId UUID Available since 1.18.0The unique Id of the Connector associated with the System of Record being used to authenticate the user.
user.cleanSpeakId UUID This Id is used by FusionAuth when the User's username is sent to CleanSpeak to be moderated (filtered and potentially sent to the approval queue). It is the content Id of the username inside CleanSpeak.
user.data Object An object that can hold any information about the User that should be persisted.
user.data.email String This field will be used as the email address if no user.email field is found.
This feature was removed in version 1.26.0 and added back in 1.27.2.
user.email String The User's email address.
user.expiry Long The expiration instant of the User's account. An expired user is not permitted to log in.
user.firstName String The first name of the User.
user.fullName String The User's full name as a separate field that is not calculated from firstName and lastName.
user.id UUID The User's unique Id.
user.identities Array Available since 1.59.0The list of identities that exist for a User.
user.identities[x].displayValue String Available since 1.59.0The display value for the identity. Only used for username type identities. If the unique username feature is not enabled, this value
will be the same as user.identities[x].value. Otherwise, it will be the username the User has chosen. For
primary username identities, this will be the same value as user.username.
user.identities[x].insertInstant Long Available since 1.59.0The instant when the identity was created.
user.identities[x].lastLoginInstant Long Available since 1.59.0The instant when the identity was last used to log in. If a User has multiple identity types (username, email, and phoneNumber), then this value will represent the specific identity they last used to log in. This contrasts with user.lastLoginInstant, which represents the last time any of the User's identities was used to log in.
Identity provider logins will not be reflected here (see user.lastLoginInstant for a field that includes identity provider logins).
user.identities[x].lastUpdateInstant Long Available since 1.59.0The instant when the identity was last updated.
user.identities[x].moderationStatus String Available since 1.59.0The current status of the username. This is used if you are moderating usernames via CleanSpeak. The possible values are:
ACTIVE- the username is activePENDING- the username is pending approval/moderationREJECTED- the username was rejected during moderation
If a username has been rejected, it is still possible to allow the User to update it and have the new one moderated again.
Only used for username type identities. For primary username identities, this will be the same value as user.usernameStatus.
user.identities[x].type String Available since 1.59.0The identity type. The possible values are:
email- identities defined by an email addressphoneNumber- identities defined by a phone numberusername- identities defined by a username
user.identities[x].value String Available since 1.59.0The value represented by the identity. The contents of this field depend on user.identities[x].typeand will be one of the following:
- Email address - The User's email address, always lower cased. For primary email identities, this will be the same value as user.email
- Phone number - The User's phone number, in E.164 canonical format. For primary phone number identities, this will be the same value as user.phoneNumber
- Username - User's username - this will be the same as user.identities[x].displayValue. For primary username identities, this will be the same value as user.username
This value is unique within a tenant for a particular user.identities[x].type.
If the unique usernames feature is enabled, value will be the unique username (within the tenant). For primary username identities, this will also be the same value as user.uniqueUsername.
user.identities[x].verified Boolean Available since 1.59.0Whether verification was actually performed on the identity by FusionAuth. This is used in combination with the user.identities[x].verifiedReason to decide whether an identity needs verification.
user.identities[x].verifiedInstant Long Available since 1.59.0The instant when verification was performed on the identity. This field is only populated when verification was actually performed on the identity by FusionAuth.
user.identities[x].verifiedReason String Available since 1.59.0The reason the User's identity was verified or not verified. The possible values are:
Skipped- Verification was skipped due to theskipVerificationparameter on the requestTrusted- Identity was created via an identity provider or a connectorUnverifiable- FusionAuth doesn't know how to verify this identity type. Usernames are an exampleImplicit- Verification was implicitly performed by sending a set password or passwordless messagePending- Tenant policy requires verification but no verification has been performed yetCompleted- Verification was performed by FusionAuthDisabled- Tenant policy did not require verificationImport- User was imported so verification was not performed by FusionAuth
If this field is Disabled, Import, Skipped, Trusted, or Unverifiable, then verification will not be required, regardless of the user.identities[x].verified value.
For Implicit, Pending, or Completed, the identity will require verification if user.identities[x].verified is false.
user.imageUrl String The URL that points to an image file that is the User's profile image.
user.insertInstant Long The instant when the user was created.
user.lastLoginInstant Long The instant when the User logged in last. See user.identities[x].lastLoginInstant for more granular information based on identity.
user.lastName String The User's last name.
user.lastUpdateInstant Long The instant when the User was last updated.
user.legacyIdentifier String Available since 1.67Used to override the sub claim in tokens issued by the Legacy Identity Provider Adapter.
This value is immutable after the user is created and is unique within the tenant when non-null.
user.memberships Array The list of memberships for the User.
user.memberships[x].data Object An object that can hold any information about the User for this membership that should be persisted.
user.memberships[x].groupId UUID The Id of the Group of this membership.
user.memberships[x].id UUID The unique Id of this membership.
user.memberships[x].insertInstant Long The instant that the membership was created.
user.middleName String The User's middle name.
user.mobilePhone String The User's mobile phone number. This is useful if you will be sending push notifications or SMS messages to the User.
This differs from user.phoneNumber and cannot be used to log in.
user.parentEmail String Available since 1.7.0The email address of the user's parent or guardian. If this value was provided during a create or update operation, this value will only remain until the child is claimed by a parent.
user.passwordChangeRequired Boolean Indicates that the User's password needs to be changed during their next login attempt.
user.passwordLastUpdateInstant Long The instant that the User last changed their password.
Since version 1.59.0, if a user does not currently have a password, this field will not be returned in the response.
user.phoneNumber String Available since 1.59.0The User's primary phone number. The phone number is stored and returned in E.164 canonical format, however a phone number is considered unique regardless of the format. 303-555-1212 is considered equal to +13035551212 so either version of this phone number can be used whenever providing it as input to an API.
This differs from user.mobilePhone in that user.phoneNumber can be used to log in, just like an email address or a username.
user.preferredLanguages Array<String> An array of locale strings that give, in order, the User's preferred languages. These are important for email templates and other localizable text. See Locales.
user.registrations Array The list of registrations for the User. This will include registrations for inactive applications.
user.registrations[x].applicationId UUID The Id of the Application that this registration is for.
user.registrations[x].authenticationToken String The Authentication Token for this registration (if one exists).
user.registrations[x].cleanSpeakId UUID This Id is used by FusionAuth when the User's username for this registration is sent to CleanSpeak to be moderated (filtered and potentially sent to the approval queue). It is the content Id of the username inside CleanSpeak.
user.registrations[x].data Object An object that can hold any information about the User for this registration that should be persisted.
user.registrations[x].id UUID The Id of this registration.
user.registrations[x].insertInstant Long The instant that this registration was created.
user.registrations[x].lastLoginInstant Long The instant that the User last logged into the Application for this registration.
user.registrations[x].preferredLanguages Array<String> An array of locale strings that give, in order, the User's preferred languages for this registration. These are important for email templates and other localizable text.
user.registrations[x].roles Array<String> The list of roles that the User has for this registration. The string is the role's Name not the role's Id, e.g. admin or user-role.
user.registrations[x].timezone String The User's preferred timezone for this registration. The string will be in an IANA time zone format.
user.registrations[x].tokens Map<String,String DEPRECATED A map that contains tokens returned from identity providers.
For example, if this user has authenticated using the Facebook Identity Provider, the Facebook access token will be available in this map, keyed by name Facebook. For an OpenID Connect Identity provider, or other generic providers, if a token is stored it will be keyed by the Identity Provider unique Id.
The token returned and stored from the Identity Provider is now stored in the IdP link and is retrievable using the Identity Provider Link API.
user.registrations[x].username String The username of the User for this registration only. This is for display purposes and cannot be used to log in.
user.registrations[x].usernameStatus String The current status of the username. This is used if you are moderating usernames via CleanSpeak. The possible values are:
ACTIVE- the username is activePENDING- the username is pending approval/moderationREJECTED- the username was rejected during moderation
If a username has been rejected, it is still possible to allow the User to update it and have the new one moderated again.
user.registrations[x].verified Boolean This value indicates if this User's registration has been verified.
For additional information, see these tutorials:
user.registrations[x].verifiedInstant Long Available since 1.48.0The instant that this registration was verified.
user.tenantId UUID The Id of the Tenant that this User belongs to.
user.timezone String The User's preferred timezone. This can be used as a default to display instants, and it is recommended that you allow Users to change this per-session. The string will be in an IANA time zone format.
user.twoFactor.methods[x].authenticator.algorithm String The algorithm used by the TOTP authenticator. With the current implementation, this will always be HmacSHA1.
user.twoFactor.methods[x].authenticator.codeLength Integer The length of code generated by the TOTP. With the current implementation, this will always be 6.
user.twoFactor.methods[x].authenticator.timeStep Integer The time-step size in seconds. With the current implementation, this will always be 30.
user.twoFactor.methods[x].email String The value of the email address for this method. Only present if user.twoFactor.methods[x].method is email.
user.twoFactor.methods[x].id String The unique Id of the method.
user.twoFactor.methods[x].lastUsed Boolean true if this method was used most recently.
user.twoFactor.methods[x].method String The type of this method. There will also be an object with the same value containing additional information about this method. The possible values are:
authenticatoremailsms
user.twoFactor.methods[x].mobilePhone String The value of the mobile phone for this method. Only present if user.twoFactor.methods[x].method is sms.
user.twoFactorDelivery String DEPRECATED The User's preferred delivery for verification codes during a two-factor login request.
The possible values are:
NoneTextMessage
user.twoFactorEnabled Boolean DEPRECATED Determines if the User has two-factor authentication enabled for their account or not.
Removed in 1.26.0user.username String The username of the User.
user.usernameStatus String The current status of the username. This is used if you are moderating usernames via CleanSpeak. The possible values are:
ACTIVE- the username is activePENDING- the username is pending approval/moderationREJECTED- the username was rejected during moderation
If a username has been rejected, it is still possible to allow the User to update it and have the new one moderated again.
user.verified Boolean DEPRECATED Whether or not the User's primary email identity has been verified. This does NOT indicate whether phone number identity types are verified.
For additional information, see these tutorials:
Deprecated since 1.59.0See user.identities[x].verified and user.identities[x].verifiedReason.
user.verifiedInstant Long Available since 1.48.0The first instant that the User's primary email address or phone number was verified. This value is immutable and cannot change for a user once set.
Example Response JSON
{
"token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE0ODUxNDA5ODQsImlhdCI6MTQ4NTEzNzM4NCwiaXNzIjoiYWNtZS5jb20iLCJzdWIiOiIyOWFjMGMxOC0wYjRhLTQyY2YtODJmYy0wM2Q1NzAzMThhMWQiLCJhcHBsaWNhdGlvbklkIjoiNzkxMDM3MzQtOTdhYi00ZDFhLWFmMzctZTAwNmQwNWQyOTUyIiwicm9sZXMiOltdfQ.Mp0Pcwsz5VECK11Kf2ZZNF_SMKu5CgBeLN9ZOP04kZo",
"user": {
"active": true,
"birthDate": "1976-05-30",
"breachedPasswordLastCheckedInstant": 1471786483322,
"breachedPasswordStatus": "None",
"connectorId": "e3306678-a53a-4964-9040-1c96f36dda72",
"data": {
"displayName": "Johnny Boy",
"favoriteColors": [
"Red",
"Blue"
]
},
"email": "example@fusionauth.io",
"expiry": 1571786483322,
"firstName": "John",
"fullName": "John Doe",
"id": "00000000-0000-0001-0000-000000000000",
"identities": [
{
"insertInstant": 1742936980069,
"lastLoginInstant": 1742936980069,
"lastUpdateInstant": 1742936980069,
"primary": true,
"type": "email",
"value": "example@fusionauth.io",
"verified": false,
"verifiedReason": "Disabled"
},
{
"insertInstant": 1742936980069,
"lastLoginInstant": 1742936980069,
"lastUpdateInstant": 1742936980069,
"primary": true,
"type": "phoneNumber",
"value": "+13035551212",
"verified": false,
"verifiedReason": "Disabled"
},
{
"displayValue": "johnny123",
"insertInstant": 1742936980069,
"lastLoginInstant": 1742936980069,
"lastUpdateInstant": 1742936980069,
"moderationStatus": "ACTIVE",
"primary": true,
"type": "username",
"value": "johnny123",
"verified": false,
"verifiedReason": "Unverifiable"
}
],
"imageUrl": "http://65.media.tumblr.com/tumblr_l7dbl0MHbU1qz50x3o1_500.png",
"insertInstant": 1742936980069,
"lastLoginInstant": 1742936980069,
"lastName": "Doe",
"middleName": "William",
"mobilePhone": "303-555-1234",
"passwordChangeRequired": false,
"passwordLastUpdateInstant": 1742936980069,
"phoneNumber": "+13035551212",
"preferredLanguages": [
"en",
"fr"
],
"registrations": [
{
"applicationId": "10000000-0000-0002-0000-000000000001",
"data": {
"displayName": "Johnny",
"favoriteSports": [
"Football",
"Basketball"
]
},
"id": "00000000-0000-0002-0000-000000000000",
"insertInstant": 1742936980069,
"lastLoginInstant": 1742936980069,
"preferredLanguages": [
"en",
"fr"
],
"roles": [
"user",
"community_helper"
],
"username": "johnny123",
"usernameStatus": "ACTIVE",
"verified": true,
"verifiedInstant": 1742936980069
}
],
"timezone": "America/Denver",
"tenantId": "f24aca2b-ce4a-4dad-951a-c9d690e71415",
"twoFactor": {
"methods": [
{
"authenticator": {
"algorithm": "HmacSHA1",
"codeLength": 6,
"timeStep": 30
},
"id": "35VW",
"method": "authenticator"
},
{
"id": "V7SH",
"method": "sms",
"mobilePhone": "555-555-5555"
},
{
"email": "example@fusionauth.io",
"id": "7K2G",
"method": "email"
}
]
},
"usernameStatus": "ACTIVE",
"username": "johnny123",
"verified": true,
"verifiedInstant": 1742936980069
}
}