---
title: "Set linked X username"
method: PUT
path: "/account/x-identity"
tags: ["Account"]
---

# Set linked X username

`PUT /account/x-identity`

Links an X username to the authenticated Xquik account.

## Request body

- object
  - `username` string, required — X username without @

## Response `200`

X identity linked

- object
  - `success` true, required
  - `xUsername` string, required

## Other responses

- `400` — Invalid input
- `401` — Unauthenticated
- `429` — Xquik tier rate limit exceeded. The response includes a `Retry-After` header with the number of seconds to wait before retrying.

## Changes

- **2026-08-19** `73cd0a1d989c` — 54 warning
  - added the new `closed` enum value to the `allOf[#/components/schemas/Error]/error/oneOf[subschema #1: LegacyErrorCode]/` response property for the response status `429`
  - added the new `closed` enum value to the `allOf[#/components/schemas/Error]/error/oneOf[subschema #2: StructuredError]/code` response property for the response status `429`
  - added the new `closed` enum value to the `error/oneOf[subschema #1: LegacyErrorCode]/` response property for the response status `400`
  - added the new `closed` enum value to the `error/oneOf[subschema #1: LegacyErrorCode]/` response property for the response status `401`
  - …50 more
- **2026-08-12** `d5855df0e349` — 18 warning
  - added the new `coverage_cursor_gone` enum value to the `allOf[#/components/schemas/Error]/error/oneOf[subschema #1: LegacyErrorCode]/` response property for the response status `429`
  - added the new `coverage_cursor_gone` enum value to the `allOf[#/components/schemas/Error]/error/oneOf[subschema #2: StructuredError]/code` response property for the response status `429`
  - added the new `coverage_cursor_gone` enum value to the `error/oneOf[subschema #1: LegacyErrorCode]/` response property for the response status `400`
  - added the new `coverage_cursor_gone` enum value to the `error/oneOf[subschema #1: LegacyErrorCode]/` response property for the response status `401`
  - …14 more

[Change history](https://skmtc.dev/xquik-dev/apis/xquik-api-3/changes/account/x-identity/put.md)

---

[API](https://skmtc.dev/xquik-dev/apis/xquik-api-3.md) · [All operations](https://skmtc.dev/xquik-dev/apis/xquik-api-3/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/xquik-dev/xquik-api-3/revisions/d56604d33047/schema)