stackexchange.user

stable Standard

Fetch a Stack Exchange user by numeric id.

GET /v1/stackexchange/user

What you get#

One Stack Exchange record in Onekey's unified shape, in data. If the record does not exist you get a 404 not_found and are not charged.

Also works with: URL lookup (stackoverflow.com/users/{id}/**). Any batch can include it.

What it costs#

Standard · 1 credit for a fresh fetch, charged only when it succeeds.
Free when served from cache (0.2 credit for a cached response over 100 KB).
Free if the request is invalid (never charged) or the source fails or reports not found (refunded).

Parameters#

Name	Type	Required	Default	What it is	Constraints
`id`	string	yes	(required)	Numeric user id, e.g. 22656	max 10 chars; must match `[0-9]{1,10}`; trimmed
`site`	string	no	-	Stack Exchange site, default stackoverflow	max 41 chars; must match `[a-z][a-z.]{1,40}`; trimmed, lowercased

Request#

curl "https://api.onekey.dev/v1/stackexchange/user?id=22656" \
  -H "x-api-key: YOUR_API_KEY"

Try it

Add your key to run this call right here. No key? Get one free. The key stays in this tab.

Recorded response#

A real Stack Exchange response, recorded and returned in Onekey's shape. Fields the platform does not provide are null.

json

{
  "success": true,
  "data": {
    "author": {
      "id": "22656",
      "username": "Jon Skeet",
      "displayName": "Jon Skeet",
      "url": "https://stackoverflow.com/users/22656/jon-skeet",
      "avatarUrl": "https://www.gravatar.com/avatar/6d8ebb117e8d83d74ea95fbdd0f87e13?s=256&d=identicon&r=PG"
    },
    "ext": {
      "reputation": 1529870
    }
  },
  "metadata": {
    "platform": "stackexchange",
    "endpoint": "user",
    "cached": false,
    "stale": false,
    "age_s": 0,
    "fetched_at": "2026-01-01T12:00:00+00:00",
    "credits_charged": 1,
    "request_id": "7f3a9c2e5b1d4c8fa2e6d0b9c4f18e37"
  },
  "error": null
}

Field mapping#

How this endpoint's source fields become Onekey's unified schema. Fields the source lacks come back as null.

Source path	Onekey field	Transform
`items.0.user_id`	`author.id`	`toString`
`items.0.display_name`	`author.username`	-
`items.0.display_name`	`author.displayName`	-
`items.0.link`	`author.url`	`safeUrl`
`items.0.profile_image`	`author.avatarUrl`	`safeUrl`
`items.0.reputation`	`ext.reputation`	`toNumber`

Caching and freshness#

Fresh for about 30 minutes. Repeat calls in that window are served from cache and are free.
Between 30 minutes and 6 hours the cached copy is still served instantly and marked stale: true while Onekey refreshes it in the background.
If the source is down when a refresh is needed, the last copy can be served for up to 1 day more (marked stale).
A "not found" is remembered for 5 minutes and is free.
The cache is shared across all customers, which is what keeps repeat calls cheap.

What can go wrong#

Status	Code	What to do
401	`unauthorized`	Check the `x-api-key` header.
402	`insufficient_credits`	Add credits; your balance must cover the price.
404	`not_found`	That record does not exist. Free; do not retry.
422	`invalid_params`	Fix the parameters using the table above. Free.
429	`rate_limited`	Wait `Retry-After` seconds, then retry.
502	`upstream_error`	The source failed. Refunded; retry with backoff.

See Errors for the full list and retry guidance.

Status: stable (verified against the live source).