| name | alfworld-object-state-inspector |
| description | Inspects a receptacle's contents by navigating to it and reading the observation. Use when you need to check what is on or inside a receptacle (e.g., "what's on the shelf", "is the holder empty", "check the table for items"). Executes `go to {receptacle}`, parses the observation listing items present, and decides whether to take an item, search elsewhere, or proceed. |
Instructions
Inspect the state or contents of a target receptacle by navigating to it and parsing the environment's observation feedback.
Workflow
- Navigate: Execute
go to {target_receptacle}
- Read observation: The environment automatically reports what is on/in the receptacle -- no additional inspection action is needed
- Parse contents: Look for patterns:
"On the {receptacle}, you see nothing." -- receptacle is empty"On the {receptacle}, you see a {item1}, and a {item2}." -- items are present
- Decide next action based on the observation:
- Empty: search elsewhere for the needed item
- Item found:
take {item} from {receptacle}
- Wrong items: move on to the next receptacle
Error Recovery
- "Nothing happened": the
go to target name is invalid -- verify the receptacle name from your environment scan
- This skill uses only
go to for navigation; it does not use open, close, or toggle
Example
Scenario 1: Check if a toiletpaperhanger has toilet paper.
Action: go to toiletpaperhanger 1
Observation: On the toiletpaperhanger 1, you see nothing.
Decision: Holder is empty. Find a toiletpaper roll elsewhere and bring it here.
Scenario 2: Check a toilet for available items.
Action: go to toilet 1
Observation: On the toilet 1, you see a soapbottle 1, and a toiletpaper 1.
Decision: toiletpaper 1 is available. Execute take toiletpaper 1 from toilet 1.
