---
title: "Get passkey bridge options"
method: POST
path: "/auth/passkey-bridge/{ceremony_id}/options"
tags: ["Auth"]
---

# Get passkey bridge options

`POST /auth/passkey-bridge/{ceremony_id}/options`

Issue WebAuthn authentication options for a pending passkey bridge ceremony. The request must come from the origin that runs the ceremony.

## Path parameters

- `ceremony_id` string, required — Identifier of the passkey ceremony

## Response `200`

Success

- PasskeyBridgeOptionsResponse
  - `options` WebAuthnAuthenticationOptionsResponse, required
    - `challenge` string, required
    - `timeout` number
    - `rpId` string
    - `allowCredentials` object[]
      - `id` string, required
      - `type` 'public-key', required
      - `transports` string[]
    - `userVerification` 'discouraged' | 'preferred' | 'required'

## Other responses

- `400` — Bad Request - The request was malformed or contained invalid data
- `429` — Too Many Requests - You are being rate limited
- `500` — Internal Server Error - An unexpected error occurred

## Changes

> 21 revisions in range; 2 not diffed.

- **2026-09-26** `3d3fd6ec1785` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/fluxer/apis/fluxer-api/changes/auth/passkey-bridge/:ceremony_id/options/post.md)

---

[API](https://skmtc.dev/fluxer/apis/fluxer-api.md) · [All operations](https://skmtc.dev/fluxer/apis/fluxer-api/llms.txt) · [OpenAPI document](https://skmtc.dev/fluxer/apis/fluxer-api/revisions/3d3fd6ec1785?raw)