modrinth.versions

stable Advanced

Versions (files) published for a Modrinth project.

GET /v1/modrinth/versions

What you get#

A list of Modrinth results in Onekey's unified shape, in data (an array). An empty array is a normal, successful answer and is charged like any other; a source that reports "nothing found" as an error returns a free 404 not_found instead.

What it costs#

Advanced · 5 credits 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
`project`	string	yes	(required)	Project slug or id, e.g. sodium	max 64 chars; must match `[A-Za-z0-9_-]{3,64}`; trimmed

Request#

curl "https://api.onekey.dev/v1/modrinth/versions?project=sodium" \
  -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 Modrinth response, recorded and returned in Onekey's shape. Fields the platform does not provide are null.

json

{
  "success": true,
  "data": [
    {
      "entity": {
        "id": "NM9w06Kr",
        "name": "Sodium 0.9.3-alpha.1 for NeoForge 26.3",
        "type": "alpha",
        "stats": {
          "downloads": 42159
        }
      },
      "package": {
        "version": "mc26.3-0.9.3-alpha.1-neoforge"
      },
      "content": {
        "createdAt": "2026-09-20T21:27:09Z",
        "text": "Sodium 0.9.3-alpha.1 fixes graphical glitches on Intel iGPUs, fluid culling for unusual blocks, and adds the macOS fullscreen menu visibility option.\n\n- Fix graphical glitches on some Intel iGPUs\n- Show macOS fullscreen menu visibility option on the Video Settings screen\n- Fix Fluid Culling For Non-Full Blocks With Unusual Shapes ([#3916](https://github.com/CaffeineMC/sodium/pull/3916))"
      },
      "author": {
        "id": "TEZXhE2U"
      }
    },
    {
      "entity": {
        "id": "v4PSXean",
        "name": "Sodium 0.9.3-alpha.1 for Fabric 26.3",
        "type": "alpha",
        "stats": {
          "downloads": 288114
        }
      },
      "package": {
        "version": "mc26.3-0.9.3-alpha.1-fabric"
      },
      "content": {
        "createdAt": "2026-09-20T21:27:07Z",
        "text": "Sodium 0.9.3-alpha.1 fixes graphical glitches on Intel iGPUs, fluid culling for unusual blocks, and adds the macOS fullscreen menu visibility option.\n\n- Fix graphical glitches on some Intel iGPUs\n- Show macOS fullscreen menu visibility option on the Video Settings screen\n- Fix Fluid Culling For Non-Full Blocks With Unusual Shapes ([#3916](https://github.com/CaffeineMC/sodium/pull/3916))"
      },
      "author": {
        "id": "TEZXhE2U"
      }
    }
  ],
  "metadata": {
    "platform": "modrinth",
    "endpoint": "versions",
    "cached": false,
    "stale": false,
    "age_s": 0,
    "fetched_at": "2026-01-01T12:00:00+00:00",
    "credits_charged": 5,
    "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
`id`	`entity.id`	-
`name`	`entity.name`	-
`version_number`	`package.version`	-
`version_type`	`entity.type`	-
`date_published`	`content.createdAt`	`toIsoDate`
`downloads`	`entity.stats.downloads`	`toNumber`
`changelog`	`content.text`	-
`author_id`	`author.id`	-

Caching and freshness#

Fresh for about 2 minutes. Repeat calls in that window are served from cache and are free.
Between 2 minutes and 15 minutes 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 hour more (marked stale).
A "not found" is remembered for 1 minute 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`	Unknown endpoint path.
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).