---
title: "Passkey registration start"
method: POST
path: "/account/link/passkey/start"
tags: ["account"]
---

# Passkey registration start

`POST /account/link/passkey/start`

Start passkey registration, returns options for startRegistration

## Response `200`

Default Response

- object
  - `options` object, required
    - `rp` object, required
      - `name` string, required
      - `id` string
    - `user` object, required
      - `id` string, required
      - `name` string, required
      - `displayName` string, required
    - `challenge` string, required
    - `pubKeyCredParams` object[], required
      - `alg` number, required
      - `type` 'public-key', required
    - `timeout` number
    - `excludeCredentials` object[]
      - `id` string, required
      - `type` 'public-key', required
      - `transports` union[]
        - union
          - 'ble'
          - 'cable'
          - 'hybrid'
          - 'internal'
          - 'nfc'
          - 'smart-card'
          - 'usb'
    - `authenticatorSelection` object
      - `authenticatorAttachment` union
        - 'platform'
        - 'cross-platform'
      - `requireResidentKey` boolean
      - `residentKey` union
        - 'discouraged'
        - 'preferred'
        - 'required'
      - `userVerification` union
        - 'discouraged'
        - 'preferred'
        - 'required'
    - `attestation` union
      - 'direct'
      - 'enterprise'
      - 'indirect'
      - 'none'
    - `extensions` unknown

## Other responses

- `400` — Default Response
- `401` — Default Response
- `500` — Default Response

---

[API](https://skmtc.net/blockmatic/apis/basilic-api.md) · [All operations](https://skmtc.net/blockmatic/apis/basilic-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/blockmatic/basilic-api/versions/b2c23a2d8170/schema)