alfworld-object-state-inspector
$
npx mdskill add zjunlp/SkillNet/alfworld-object-state-inspectorInspect receptacle contents by navigating and parsing observations.
- Enables agents to verify empty shelves or locate specific items.
- Depends on the go to action and environment observation feedback.
- Decides next steps by matching observed items against user queries.
- Returns parsed lists of found objects or confirms emptiness.
SKILL.md
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---
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
1. **Navigate:** Execute `go to {target_receptacle}`
2. **Read observation:** The environment automatically reports what is on/in the receptacle -- no additional inspection action is needed
3. **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
4. **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`.
More from zjunlp/SkillNet
- alfworld-appliance-navigatorNavigates the agent to a target appliance (microwave, stove, fridge, or sinkbasin) needed for object processing. Use when you are holding an object that needs heating, cooling, or cleaning and must move to the correct appliance station. Identifies the required appliance from the task context and executes the movement action.
- alfworld-appliance-preparerPrepares a household appliance (microwave, oven, toaster, fridge) for use by ensuring it is in the correct open/closed state. Use when the agent needs to heat, cool, or cook an item and must first open or close the appliance before placing an object inside. Takes an appliance identifier as input and outputs a confirmation that the appliance is ready for the next action.
- alfworld-clean-objectCleans a specified object using an appropriate cleaning receptacle (e.g., sinkbasin). Use when a task requires an object to be in a clean state (e.g., "clean potato", "wash apple") before proceeding. Navigates to the cleaning location, performs the clean action, and confirms the object is now clean.
- alfworld-device-operatorOperates a device or appliance (like a desklamp, microwave, or fridge) to interact with another object. Use when the task requires using a tool on a target item (e.g., "look at laptop under the desklamp", "heat potato with microwave"). Locates both the device and target object, co-locates them, and executes the appropriate use action (toggle, heat, cool, or clean).
- alfworld-environment-scannerPerforms an initial scan of the ALFWorld environment to identify all visible objects and receptacles. Use when you first enter an environment and need to build a mental map for task planning. Processes raw observation text into a structured list of entities, categorizing them as objects or receptacles.
- alfworld-goal-interpreterParses the natural language task goal to extract actionable sub-objectives and required objects. Trigger this skill whenever a new task is assigned to break down complex instructions into clear, sequential targets. It interprets phrases like 'look at X under Y' to identify target objects (pillow), reference objects (desklamp), and spatial relationships (under).
- alfworld-heat-object-with-applianceUses a heating appliance (microwave, stoveburner, oven) to apply heat to a specified object. Use when the task requires warming or cooking an item (e.g., "heat some egg", "warm the mug") and a heating appliance is available. Takes the object name and appliance name as input and outputs the object in a heated state, ready for placement at the task's target location.
- alfworld-inventory-managementUse when the agent must collect and track multiple instances of the same object type in ALFWorld (e.g., "put two cellphone in bed"). This skill maintains a count of collected versus needed objects, guides systematic searching through receptacles, and ensures each found object is placed at the target before searching for the next.
- alfworld-locate-target-objectNavigates to a suspected location and identifies a target object. Use when your goal requires finding a specific object (e.g., "potato", "plate") and its location is not immediately known. Moves to a relevant receptacle (like a fridge or cabinet), checks its contents, and outputs the object's location or confirms its absence.
- alfworld-location-navigatorMoves the agent to a specified receptacle or object location within the Alfworld environment. Use this skill when the agent needs to physically approach a target to inspect or interact with it, such as when checking an object's state or preparing for pickup. The skill takes a target location name as input and executes the 'go to' action, resulting in the agent being positioned at the destination for subsequent operations.