Hitting rate limits with Modrinth API

[Lenart12]

Describe the problem

Starting the container after being stopped for atleast one hour I hit rate limits on first start (and also every successive start):

mc-1  | [init] Running as uid=1000 gid=1000 with /data as 'drwxr-xr-x 1 1000 1000 1366 Feb  2 19:38 /data'
mc-1  | [init] Image info: buildtime=2026-01-04T14:02:52.014Z,version=2026.1.0-java25-graalvm,revision=c9094063d344fa38a97223e7ceafe005577865bb
mc-1  | [init] Resolving type given FABRIC
mc-1  | [mc-image-helper] 19:02:35.023 INFO  : Fabric launcher for minecraft 1.21.11 loader 0.18.4 is already available
mc-1  | [mc-image-helper] 19:02:38.606 INFO  : Downloading Vanilla Tweaks datapacks for share code NpW9a6
mc-1  | [mc-image-helper] 19:02:42.546 ERROR : 'modrinth' command failed. Version is 1.52.1: FailedRequestException: HTTP request of https://api.modrinth.com/v2/project/gvQqBUqZ/version?loaders=[%22fabric%22]&game_versions=[%221.21.11%22] failed with 429 Too Many Requests: Fetching object content

Relevant environment:

      VERSION: "1.21.11"
      TYPE: "FABRIC"
      MODRINTH_PROJECTS: |
        fabric-api
        lithium
        ferrite-core

Container definition

No response

Container logs

No response

EDIT: After commenting out MODRINTH_PROJECTS I get this:

mc-1  | [init] Running as uid=1000 gid=1000 with /data as 'drwxr-xr-x 1 1000 1000 1366 Feb  2 19:38 /data'
mc-1  | [init] Image info: buildtime=2026-01-04T14:02:52.014Z,version=2026.1.0-java25-graalvm,revision=c9094063d344fa38a97223e7ceafe005577865bb
mc-1  | [init] Resolving type given FABRIC
mc-1  | [mc-image-helper] 19:06:51.190 INFO  : Fabric launcher for minecraft 1.21.11 loader 0.18.4 is already available
mc-1  | [mc-image-helper] 19:06:54.998 INFO  : Downloading Vanilla Tweaks datapacks for share code NpW9a6
mc-1  | [mc-image-helper] 19:07:25.056 WARN  : [37774ab4-3, L:/172.18.0.3:57972 - R:vanillatweaks.net/172.67.172.9:443] The connection observed an error
mc-1  | io.netty.handler.timeout.ReadTimeoutException: null
mc-1  | [mc-image-helper] 19:07:25.074 ERROR : 'vanillatweaks' command failed. Version is 1.52.1
mc-1  | io.netty.handler.timeout.ReadTimeoutException: null

[nelsongraca]

Exact same issue here.

[itzg]

Please contact Modrinth on their discord. I am not associated with Modrinth and cannot help with their API endpoint rate limits.

[itzg]

People seem to be asking about the same there

https://discord.com/channels/734077874708938864/734077874708938867/1470452780618485841

[Lenart12]

Seems Modrinth had issues and is resolved. Before I close this issue one last thought... Do you think it would be sensible to add IGNORE_FAILED_UPGRADES that would ignore failed version checks or downloads if a local copy exists? In case something like this happens in the future.

[nelsongraca]

Sounds like a great idea, I had to comment out stuff for it to launch

[itzg]

Sounds good in theory, but automating that for cases of upgrades vs new entries sounds messy.

I guess I could have that option ignore all errors from Modrinth and then says "Good luck, your server might be incomplete or incompatible with clients"

I'll give it some more thought.