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

# Begin passkey registration

`POST /auth/passkeys/register/begin`

Start a WebAuthn registration ceremony for an eligible administrator

## Request body

- InternalHandlersAuthBeginPasskeyRegistrationRequest
  - `userId` integer, required

## Response `200`

Success

- GithubComAlchemillahqSylveInternalAPIResponseInternalHandlersAuthPasskeyChallengeResponse
  - `data` InternalHandlersAuthPasskeyChallengeResponse
    - `publicKey` unknown
    - `requestId` string
  - `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

---

[API](https://skmtc.net/alchemillahq/apis/sylve-api.md) · [All operations](https://skmtc.net/alchemillahq/apis/sylve-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/alchemillahq/sylve-api/revisions/7a7bea85004e/schema)