---
name: alfworld_household_rungs
description: "Get a virtual house robot to find, carry, wash, heat, cool, inspect under a light, or gather a pair of household objects and put them where you want, just by telling it what to do in plain terms. alfworld_household_rungs: Six task-level household skills (pick, clean, heat, cool, examine-in-light, pi"
---

# alfworld_household_rungs (a Neruva verified skill for `alfworld`)

Get a virtual house robot to find, carry, wash, heat, cool, inspect under a light, or gather a pair of household objects and put them where you want, just by telling it what to do in plain terms.

Verified helper code for `alfworld`, python. Entry points: `pick_and_place`, `clean_and_place`, `heat_and_place`, `cool_and_place`, `examine_in_light`, `pick_two_and_place`.
Code hash sha256 `ea20b1c3a3f2f990c282e7eb9f8f6d4c2ac3b5716022cb1fd06a90b8337bcf58`, signed (ed25519). Banked by `legacy-dev`.

## How to use it

Skill library usage guide (ALFWorld)

Import: the module is already imported for you with `World` and `search_order`
bound. Call the functions with a live `w = World(game)` instance and TYPE
name strings (lowercase, singular, as they literally appear in the game,
e.g. 'apple', 'countertop', 'desklamp', 'sinkbasin', 'microwave', 'fridge').
Do NOT pass instance names like 'apple 1' — the skills find and pick the
concrete instance for you. Every function returns True/False for success.

1) pick_and_place(w, obj, dest)
   "put a <obj> in/on <dest>"
   e.g. task "put a pillow on the sofa" -> pick_and_place(w, 'pillow', 'sofa')

2) clean_and_place(w, obj, dest)
   "put a clean <obj> in/on <dest>" / "clean some <obj> and put it in <dest>"
   e.g. task "put a clean lettuce in diningtable"
        -> clean_and_place(w, 'lettuce', 'diningtable')

3) heat_and_place(w, obj, dest)
   "heat some <obj> and put it in/on <dest>" / "put a hot <obj> in <dest>"
   e.g. task "heat some egg and put it in garbagecan"
        -> heat_and_place(w, 'egg', 'garbagecan')

4) cool_and_place(w, obj, dest)
   "cool some <obj> and put it in/on <dest>" / "put a cool <obj> in <dest>"
   e.g. task "cool some potato and put it in microwave"
        -> cool_and_place(w, 'potato', 'microwave')

5) examine_in_light(w, obj, lamp)
   "look at <obj> under the <lamp>" / "examine the <obj> with the <lamp>"
   lamp is usually 'desklamp' or 'floorlamp'.
   e.g. task "examine the book with the desklamp"
        -> examine_in_light(w, 'book', 'desklamp')

6) pick_two_and_place(w, obj, dest)
   "put two <obj> in/on <dest>" / "find two <obj> and put them in <dest>"
   e.g. task "put two cds in safe" -> pick_two_and_place(w, 'cd', 'safe')

Mapping task sentences to type names:
- Strip articles ("a", "an", "the", "some") and pluralization ("two cds" ->
  obj='cd", use pick_two_and_place).
- Words like "clean", "hot"/"heated", "cold"/"cooled"/"chilled" signal which
  wrapper to use (clean_and_place / heat_and_place / cool_and_place);
  otherwise plain placement is pick_and_place.
- "examine"/"look at ... under/with the <lamp>" signals examine_in_light,
  with the lamp type taken from the sentence (desklamp/floorlamp).
- dest/obj/lamp must be the bare noun exactly as ALFWorld names it
  (e.g. 'sidetable', 'coffeetable', 'garbagecan', 'sinkbasin').

## Evidence (corpus named)

- ratchet check 11/12 train games; generality gate 12/12 held-out train games; forged by claude-sonnet-5 for $0.52 from 24 train games
- ALFWorld valid_unseen, all 134 games: deepseek-chat + rungs 134/134, 1.05 model turns/game, 0 execution errors, $0.04 total; SKILL-DISCO best row 99.3 at 3.2 turns (GPT-4o)
- requires scripts/primitives.py and scripts/priors.py from the alfworld-household skill folder

## Files

- `scripts/skill.py`: the verified code (GET /v1/commons/rungs/rec_3cb33e42fc984a789c990fbdb8b63944/code)
- verify: POST /v1/commons/verify {"id": "rec_3cb33e42fc984a789c990fbdb8b63944"}