---
title: "Finish passkey assertion ceremony"
method: POST
path: "/passkeys/assertion/finish"
tags: ["WalletUnitActivation"]
---

# Finish passkey assertion ceremony

`POST /passkeys/assertion/finish`

Verifies the WebAuthn assertion cryptographically, enforces RP/origin,
user verification, backup, transport, replay, ownership, and sign-count
policy, and returns operation-bound assertion evidence.

## Request body

- FinishPasskeyAssertionRequest — unresolved $ref

## Response `200`

Verified passkey assertion evidence.

- PasskeyAssertionEvidence — unresolved $ref

## Other responses

- `400` — unresolved $ref
- `401` — unresolved $ref
- `403` — unresolved $ref

## Changes

- **2026-07-17** `be46f4806163` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/sphereon-opensource/apis/wallet-unit-api/changes/passkeys/assertion/finish/post.md)

---

[API](https://skmtc.dev/sphereon-opensource/apis/wallet-unit-api.md) · [All operations](https://skmtc.dev/sphereon-opensource/apis/wallet-unit-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/sphereon-opensource/wallet-unit-api/revisions/be46f4806163/schema)