lemmy.post

stable Standard

A Lemmy post.

GET /v1/lemmy/post

What you get#

One Lemmy 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: Computed block (engagement_rate, language). 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
`instance`	string	no	-	Known Lemmy instance (allowlisted), default lemmy.world	max 253 chars; must match `[a-z0-9.-]{3,253}`; trimmed, lowercased
`id`	string	yes	(required)	Post id on the instance	max 12 chars; must match `[0-9]{1,12}`; trimmed

Request#

curl "https://api.onekey.dev/v1/lemmy/post?id=52463999" \
  -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 Lemmy response, recorded and returned in Onekey's shape. Fields the platform does not provide are null.

json

{
  "success": true,
  "data": {
    "content": {
      "id": "52463999",
      "title": "Apple's A20 Pro shatters Geekbench 7 single-core record — 2nm chip beats desktop Intel Core i9 and AMD Ryzen 9 by up to 32%",
      "text": null,
      "url": "https://www.tomshardware.com/pc-components/cpus/apples-a20-pro-shatters-geekbench-7-single-core-record-2nm-chip-beats-desktop-intel-core-i9-and-amd-ryzen-9-by-up-to-32-percent",
      "createdAt": "2026-09-28T11:19:32Z"
    },
    "ext": {
      "apUrl": "https://lemmy.world/post/52463999",
      "languageId": 37,
      "title": "Technology"
    },
    "author": {
      "id": "644053",
      "username": "KoalaUnknown",
      "displayName": null,
      "url": "https://lemmy.world/u/KoalaUnknown",
      "avatarUrl": null
    },
    "entity": {
      "name": "technology"
    },
    "engagement": {
      "likes": 160,
      "comments": 94
    }
  },
  "metadata": {
    "platform": "lemmy",
    "endpoint": "post",
    "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
`post_view.post.id`	`content.id`	`toString`
`post_view.post.name`	`content.title`	-
`post_view.post.body`	`content.text`	-
`post_view.post.url`	`content.url`	`safeUrl`
`post_view.post.ap_id`	`ext.apUrl`	`safeUrl`
`post_view.post.published`	`content.createdAt`	`toIsoDate`
`post_view.post.language_id`	`ext.languageId`	`toNumber`
`post_view.creator.id`	`author.id`	`toString`
`post_view.creator.name`	`author.username`	-
`post_view.creator.display_name`	`author.displayName`	-
`post_view.creator.actor_id`	`author.url`	`safeUrl`
`post_view.creator.avatar`	`author.avatarUrl`	`safeUrl`
`post_view.community.name`	`entity.name`	-
`post_view.community.title`	`ext.title`	-
`post_view.counts.score`	`engagement.likes`	`toNumber`
`post_view.counts.comments`	`engagement.comments`	`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).