Skill: Tool User for ALFWorld
When to Use
Trigger this skill when:
- A task requires applying a tool to an object (e.g., cleaning a knife with a sinkbasin, heating food with a microwave)
- Both the tool and target object are in the agent's possession or within reach
- The agent knows which interaction verb to use for the task context
Core Workflow
1. Identify Requirements
- Parse the task to determine:
- Target object: The item to be acted upon (e.g.,
knife 1,potato 2) - Required tool: The appliance or instrument needed (e.g.,
sinkbasin 1,microwave 1) - Interaction type: The action verb (
clean,heat,cool,use,examine)
- Target object: The item to be acted upon (e.g.,
2. Locate and Acquire
- Target object: If not in inventory, navigate to its location and
take {object} from {receptacle} - Tool: Navigate to the tool's location (tools are typically stationary appliances)
3. Execute Interaction
Apply the tool to the object using the correct action syntax:
| Interaction | Action Command | Example |
|---|---|---|
| Clean | clean {obj} with {tool} | clean knife 1 with sinkbasin 1 |
| Heat | heat {obj} with {tool} | heat potato 2 with microwave 1 |
| Cool | cool {obj} with {tool} | cool apple 1 with fridge 1 |
| Examine | examine {obj} | examine book 3 |
| Use | use {tool} | use desklamp 1 |
4. Verify Outcome
- Check the environment observation after the action
- A successful interaction changes the object state (e.g.,
knife 1becomes clean) - If the observation says "Nothing happened," the action was invalid
Error Handling
- "Nothing happened": Reassess whether the agent is at the correct location and holding the correct object. Verify the action verb matches the task context.
- Wrong tool: If the tool does not match the interaction type, search for the correct appliance (e.g., use
sinkbasinfor cleaning, notbathtub). - Object not held: The agent must be holding the target object before most interactions. Use
takefirst.
Example
Task: "Clean the knife and put it in the drawer."
> go to countertop 1 On the countertop 1, you see a knife 1, a saltshaker 2. > take knife 1 from countertop 1 You pick up the knife 1 from the countertop 1. > go to sinkbasin 1 On the sinkbasin 1, you see nothing. > clean knife 1 with sinkbasin 1 You clean the knife 1 using the sinkbasin 1.
Result: knife 1 is now clean and ready for the next step (storing).
