# Minecraft Tag Function

> Function tags: #load (runs on world load/server start and every datapack reload) and #tick (runs at the start of every game tick), used to organize and invoke datapack functions in specific contexts.

- Skill: `zmjjkk123-hub/minecraft-tag-function` (Agent Skill)
- Install (CLI): `npx skillmds@latest add zmjjkk123-hub/minecraft-tag-function`
- Raw SKILL.md: https://api.skillmd.com/api/skills/zmjjkk123-hub/minecraft-tag-function/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ZMJJKK123-hub (https://skillmd.com/u/zmjjkk123-hub)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/zmjjkk123-hub/minecraft-tag-function

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# Function Tags

This content applies only to Java Edition.

Function tags are groups of functions.

## Usage

Function tags can be used with the `/function` command, which runs all functions in the tag in the order they first appear. If a function is referenced multiple times in a tag and its subtags, it runs only once.

The game provides two special tags:

- Functions listed in `#load` run when the world loads or the server starts. They also run on every datapack reload.
- Functions listed in `#tick` run at the start of every game tick, repeating continuously.

Vanilla datapacks do not use these tags.

## Example

The following example defines the `#load` tag in the `minecraft` namespace and adds the `example:test` function.

`data/minecraft/tags/function/load.json`:

```json
{
  "values": [
    "example:test"
  ]
}
```

The game runs `example:test` once when the datapack loads.