alfworld-receptacle-operator

Skill: Receptacle Operator

When to Use

Use this skill when you need to:

1. Access a closed receptacle to place an object inside or take an object out.
2. Secure an open receptacle after accessing it (e.g., to conserve energy, maintain cleanliness, or complete a task step).

Core Decision Logic

1. Check the receptacle's state from the observation.
2. If it reports "is closed" or "is open", note the state.
3. If the interior is visible (e.g., "In it, you see..."), it is open.
4. Choose action based on goal:
5. Goal requires interior access (e.g., "put in microwave", "take from fridge"):
6. If closed → open {recep}
7. If open → proceed with next step (e.g., put or take)
8. Goal requires securing receptacle (e.g., after accessing, or for efficiency):
9. If open → close {recep}
10. If closed → no action needed
11. Execute the action using the exact format: Action: open {recep} or Action: close {recep}

Example from Trajectory

• Task: "cool some tomato and put it in microwave"
• Step 1: At closed fridge → Action: open fridge 1
• Step 2: After checking interior → Action: close fridge 1 (for efficiency)
• Step 3: At closed microwave → Action: open microwave 1

Important Notes

• Always verify the receptacle state from the latest observation before acting.
• The skill only handles open and close actions. Other actions (like take, put, cool) are separate skills.
• If "Nothing happened" is observed after your action, the receptacle may already be in that state—re-check and adjust.

For detailed state diagrams and edge cases, see the reference documentation.