---
title: "GET /api/v1/x/followers/check"
method: GET
path: "/api/v1/x/followers/check"
tags: ["Users"]
---

# GET /api/v1/x/followers/check

`GET /api/v1/x/followers/check`

## Request

- Base URL: `https://xquik.com`
- URL: `https://xquik.com/api/v1/x/followers/check`
- Auth: one of:
  - API key in header `x-api-key`
  - HTTP bearer
  - none

Returns whether 1 public account follows another, & the reverse, with each account's username & user ID as X names them.

## Query parameters

- `source` string, required
- `target` string, required
- `fields` string
- `omit` string

## Response `200`

Follow check result

- object
  - `isFollowing` boolean, required
  - `isFollowedBy` boolean, required
  - `sourceId` string: The source account's user ID, as X gives it.
  - `sourceUsername` string, required
  - `targetId` string: The target account's user ID, as X gives it.
  - `targetUsername` string, required: The target account's username, in lower case.

## Other responses

- `400`: Missing or invalid params, or a value past its maxLength
- `401`: Unauthenticated
- `402`: Payment required. MPP reads include `WWW-Authenticate`. Authenticated reads include balances, plus checkout when the key can open it. A key that reads only gets the account page instead. A failed request never creates checkout. A caller on a plan gets top-up only, plus `credits_renew_at` when the plan renews. Guest keys offer top-up.
- `424`: Dependency unavailable, unauthorized, or limited. Default v1 uses 502. Best-practice responses use 424 for transparent dependency failures. Search answers 424 `search_unavailable` when X fails the query itself, or when its filters matched none of the last 3,000 posts read. The message says how far back the search read.
- `429`: Too many requests right now. Each user gets 500 reads a second. Each minute allows 120 writes & 60 deletes. `x_api_rate_limited` means X limits this read for now. Neither answer costs anything. Wait for the seconds in `Retry-After`, then retry.
- `500`: Unexpected error.
- `502`: Dependency unavailable, unauthorized, or limited. Default v1 uses 502. Best-practice responses use 424 for transparent dependency failures. Search answers 424 `search_unavailable` when X fails the query itself, or when its filters matched none of the last 3,000 posts read. The message says how far back the search read.
- `503`: Retry x_api_unavailable after Retry-After. With X-Xquik-Busy, retry until your deadline.
- `default`: Unexpected error.

## Changes

- **2026-10-20** `45942c75fdc2`: 18 warning
  - added the new `topup_in_progress` enum value to the `allOf[#/components/schemas/Error]/error/oneOf[subschema #1: LegacyErrorCode]/` response property for the response status `429`
  - added the new `topup_in_progress` enum value to the `allOf[#/components/schemas/Error]/error/oneOf[subschema #2: StructuredError]/code` response property for the response status `429`
  - added the new `topup_in_progress` enum value to the `error/oneOf[subschema #1: LegacyErrorCode]/` response property for the response status `400`
  - added the new `topup_in_progress` enum value to the `error/oneOf[subschema #1: LegacyErrorCode]/` response property for the response status `401`
  - …14 more

[Operation history](https://skmtc.dev/xquik-dev/apis/xquik-api/changes/api/v1/x/followers/check/get.md)

---

[API](https://skmtc.dev/xquik-dev/apis/xquik-api.md) · [All operations](https://skmtc.dev/xquik-dev/apis/xquik-api/llms.txt) · [OpenAPI document](https://skmtc.dev/xquik-dev/apis/xquik-api/revisions/45942c75fdc2?raw)