---
title: "Changes to Create API Key"
method: POST
path: "/api_keys"
---

# Changes to Create API Key

`POST /api_keys`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 19 revisions.

- **2026-08-31** `2093c418fb5d` — 3 info

## Changes

- **2026-08-31** `2093c418fb5d` — 3 info
  - added the new optional request property `fcm_subtrader_id`
  - added the non-success response with the status `409`
  - added the optional property `warning` to the response with the `201` status

---

[Operation](https://skmtc.dev/kalshi/apis/kalshi-trade-api-manual-endpoints/docs/api_keys/post.md) · [API](https://skmtc.dev/kalshi/apis/kalshi-trade-api-manual-endpoints.md) · [Page](https://skmtc.dev/kalshi/apis/kalshi-trade-api-manual-endpoints/changes/api_keys/post)