---
title: "Finish passkey registration"
method: POST
path: "/auth/passkeys/register/finish"
tags: ["Authentication"]
---

# Finish passkey registration

`POST /auth/passkeys/register/finish`

## Request

- Base URL: `https://sylve.lan:8181/api`
- URL: `https://sylve.lan:8181/api/auth/passkeys/register/finish`
- Auth: API key in header `Authorization`

Verify a WebAuthn attestation and save the credential bound to its registration challenge

## Request body

- InternalHandlersAuthFinishPasskeyRegistrationRequest
  - `credential` integer[], required
  - `label` string
  - `requestId` string, required

## Response `200`

Success

- GithubComAlchemillahqSylveInternalAPIResponseGithubComAlchemillahqSylveInternalServicesAuthPasskeyCredentialInfo
  - `data` GithubComAlchemillahqSylveInternalServicesAuthPasskeyCredentialInfo
    - `createdAt` string
    - `credentialId` string
    - `id` integer
    - `label` string
    - `updatedAt` string
    - `userId` integer
  - `error` string
  - `message` string
  - `status` string

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `403`: Forbidden
- `404`: Not Found
- `409`: Conflict
- `413`: Request Entity Too Large
- `500`: Internal Server Error
- `503`: Service Unavailable

## Changes

- **2026-08-12** `9a5026bf9057`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/alchemillahq/apis/sylve-api/changes/auth/passkeys/register/finish/post.md)

---

[API](https://skmtc.dev/alchemillahq/apis/sylve-api.md) - [All operations](https://skmtc.dev/alchemillahq/apis/sylve-api/llms.txt) - [OpenAPI document](https://skmtc.dev/alchemillahq/apis/sylve-api/revisions/9565cdd0abf5?raw)