AI agent skill · by @zjunlp

Alfworld Object State Modifier

Uses an appliance to change the state of an object (cooling, heating, or cleaning). Use when the task requires altering an object's temperature or cleanliness using a specific device (e.g., cooling with a fridge, heating with a microwave, cleaning with a sinkbasin). Takes the object, target state, and appliance as inputs and executes the corresponding modifier action.

Archived 2026-10-23 · Source updated 2026-09-28 · License: MIT. Check the original repository for the latest version.

SKILL.md instructions

# Instructions

Change an object's state (cool, heat, or clean) using a household appliance. You must be holding the target object before executing the state change.

## Workflow
1. **Navigate to appliance:** `go to {appliance}` (e.g., `go to fridge 1`)
2. **Prepare if closed:** If observation says appliance is closed, execute `open {appliance}` -- verify it opens
3. **Execute state change:** `{action} {obj} with {appliance}` -- verify observation confirms the change
4. **Proceed:** Continue with the next task step (e.g., placing the modified object)

## Action Mapping
| State Change | Action | Typical Appliance |
|---|---|---|
| Cool | `cool {obj} with {appliance}` | `fridge 1` |
| Heat | `heat {obj} with {appliance}` | `microwave 1`, `stoveburner 1` |
| Clean | `clean {obj} with {appliance}` | `sinkbasin 1` |

## Error Recovery
- "Nothing happened": Check (1) you are holding the object, (2) appliance is open/ready, (3) object and appliance names are correct
- Appliance occupied: remove existing items first with `take {item} from {appliance}`

## Example

**Scenario:** You need to cool a tomato using the fridge.

```
Thought: I'm holding tomato 1 and need to cool it. I'll go to the fridge.
Action: go to fridge 1
Observation: The fridge 1 is closed.
Action: open fridge 1
Observation: You open the fridge 1. The fridge 1 is open. In it, you see a lettuce 1.
Action: cool tomato 1 with fridge 1
Observation: You cool the tomato 1 using the fridge 1.
```

**Result:** The tomato is now in a cooled state. Proceed with the next task step (e.g., placing it on a countertop).