---
title: "Passkey resolve user"
method: POST
path: "/auth/passkey/resolve-user"
tags: ["auth"]
---

# Passkey resolve user

`POST /auth/passkey/resolve-user`

Resolve user email from passkey assertion userHandle (for discovery UX)

## Request body

- object
  - `userHandle` string, required

## Response `200`

Default Response

- object
  - `maskedIdentifier` string, required

## Other responses

- `400` — Default Response
- `429` — 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)