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

# Finish passkey registration

`POST /auth/passkeys/register/finish`

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

[Change 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/6d4b8bb77d9a?raw)