---
title: "Email-free sign-up, step 2: return the signed challenge; the agent starts key-proven (T1)."
method: POST
path: "/v1/accounts/signup/handshake/complete"
tags: ["Accounts"]
---

# Email-free sign-up, step 2: return the signed challenge; the agent starts key-proven (T1).

`POST /v1/accounts/signup/handshake/complete`

## Request

- Base URL: `https://www.rightshold.com`
- URL: `https://www.rightshold.com/v1/accounts/signup/handshake/complete`
- Auth: none required

## Headers

- `X-Request-Id` string

## Request body

- object
  - `signup_id` string, required
  - `signature` string, required

## Response `200`

OK

- object: Inferred from recorded responses; additional properties may appear.
  - `tenant` object
    - `id` string
    - `display_name` string
    - `kind` string
    - `email_verified` boolean
    - `bridge_verified` boolean
    - `signup_method` string
    - `created_at` string
    - `environment` string
  - `api_key` string
  - `api_key_notice` string
  - `agent` object
    - `id` string
    - `tier` string
    - `key_id` string
    - `handle` string
  - `tracking_notice` string

## Other responses

- `400`: Problem details: a stable error code, type URI, title, status and an explanation
- `401`: Problem details: a stable error code, type URI, title, status and an explanation
- `404`: Problem details: a stable error code, type URI, title, status and an explanation
- `405`: Problem details: a stable error code, type URI, title, status and an explanation
- `422`: Problem details: a stable error code, type URI, title, status and an explanation
- `429`: Request budget exhausted; retry after Retry-After seconds
- `500`: Problem details: a stable error code, type URI, title, status and an explanation
- `4XX`: {error, detail}

---

[API](https://skmtc.dev/rightshold/apis/rightshold-api.md) · [All operations](https://skmtc.dev/rightshold/apis/rightshold-api/llms.txt) · [OpenAPI document](https://skmtc.dev/rightshold/apis/rightshold-api/revisions/cfe84fdde1ca?raw)