Tis

Minecraft 26.3 snapshot 2

The second 26.3 snapshot is out, with many technical changes.

These writeups assume you have read the Official Changelog before continuing.

Table of Contents

Blocks

Shelf Mushroom

Small shelf mushrooms now consist of two collision boxes:

  • A larger hitbox 0.625 × 0.125 × 0.4375 blocks in size, resting 0.5625 blocks off the ground
  • A smaller hitbox 0.375 × 0.0625 × 0.25 blocks in size, resting 0.5 blocks off the ground

Large shelf mushrooms now consist of two collision boxes:

  • A larger hitbox 0.875 × 0.1875 × 0.625 blocks in size, resting 0.5 blocks off the ground
  • A smaller hitbox 0.5 × 0.125 × 0.375 blocks in size, resting 0.375 blocks off the ground

Wool

Wool stairs now smelt 1/2 of an item each, and wool slabs now smelt 1/4 of an item each.

Mobs

Wandering traders now sell 8 poplar logs for 1 emerald up to 4 times.

Striders no longer have a 1/30 chance to spawn with a zombified piglin if the spawn_monsters game rule is false.

Options

F3+X now toggles the Improved Transparency setting.

Data Packs

Data Components

Projectiles can no longer break blocks in adventure mode (fix for ) unless the item that shot the projectile’s can_break component allows breaking that block.

Block State Providers

The copy_properties_provider block state provider has a field named source_block_state_provider, not block_state_provider.

Int Providers

The very_biased_to_bottom int provider uses this code to generate a random number, where randInt(x) generates a random integer from 0 (inclusive) to x (exclusive):

min + randInt(randInt(randInt(max - min + 1) + 1) + 1)

Debug Properties

Removed -DMC_DEBUG_CARVERS.

Mojang API

The game no longer hardcodes API endpoints. Instead, the game sends a GET request to the delivery service at https://discovery.minecraftservices.com/minecraft/client, which returns all services and their endpoints:

{
  "environment": "prod",
  "product": "minecraft",
  "discovery": {
    "authentication": {...},
    "session": {...},
    "player": {...},
    "profiles": {...},
    "telemetry": {...},
  }
}

Contained in each service’s {...} is a map from endpoint keys to URIs.

{
  "<key>": {
    // Can contain arguments such as {name}
    "uri": "<uri>",
  },
  ...
}

Below is a table of all endpoints the game uses, and the service and endpoint key used to discover that endpoint:

Host Current Endpoint Service Endpoint Key Arguments
Services GET /publickeys authentication getPublicKeys  
Services POST /authentication/login_with_xbox authentication loginXbox  
Session GET /session/minecraft/profile session getProfileById {profileId}
Session GET /session/minecraft/hasJoined session verify  
Session POST /session/minecraft/join session join  
Services POST /player/certificates player getCertificates  
Services GET /player/attributes player getAttributes  
Services POST /player/attributes player updateAttributes  
Services GET /privacy/blocklist player getBlocklist  
Services POST /player/report player sendReport  
Services GET /friends player getFriends  
Services PUT /friends player updateFriends  
Services POST /presence player updatePresence  
Profiles GET /minecraft/profile/lookup/name/ profiles getByName {name}
Profiles POST /minecraft/profile/lookup/bulk/byname profiles getManyByName  
Services POST /events telemetry sendEvents  

Where “Host” is the base URL of the current endpoint:

  • Services: https://api.minecraftservices.com
  • Session: https://sessionserver.mojang.com
  • Profiles: https://api.mojang.com

The getTextures endpoint key under the profiles service instead returns a list of URIs that, when the argument {textureId} is removed, determines which URIs are valid skin texture hosting locations:

{
  "getTextures": {
    "validUris": [
      "https://textures.minecraft.net/texture/{textureId}",
      "http://textures.minecraft.net/texture/{textureId}"
    ]
  }
}

Edits

September 6, 2026

  • Correct official changelog mistake for copy_properties_provider