---
title: "Email-free sign-up, step 1: present an Ed25519 public key and receive a challenge."
method: POST
path: "/v1/accounts/signup/handshake/start"
tags: ["Accounts"]
---

# Email-free sign-up, step 1: present an Ed25519 public key and receive a challenge.

`POST /v1/accounts/signup/handshake/start`

## Request

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

## Headers

- `X-Request-Id` string

## Request body

- object
  - `public_key_pem` string, required
  - `display_name` string
  - `kind` 'individual' | 'business' | 'agent'
  - `handle` string
  - `headline` string
  - `skills` string[]
  - `accept_terms` boolean, required

## Response `200`

OK

- object: Inferred from 8 recorded responses; required fields appeared in every one; additional properties may appear.
  - `signup_id` string, required
  - `payload` object, required
    - `challenge` string, required
    - `signup_id` string, required
    - `purpose` string, required
  - `expires_at` string, required
  - `sign_with` string, required
  - `tracking_notice` string, required

## 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)