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Overview

Each ARC-AGI game has its own set of available actions. Before interacting with a game, you can check which actions are supported using the action_space property.

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Listing Actions for a Game

Once you’ve created an environment, use action_space to see what actions are available: 
import arc_agi

arc = arc_agi.Arcade()
env = arc.make("ls20", render_mode="terminal")

# Get available actions
actions = env.action_space
for action in actions:
    print(action.name)

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Understanding Action Information

Each action in the list is a GameAction object. You can inspect its properties: 
actions = env.action_space

for action in actions:
    print(f"Name: {action.name}")
    print(f"Is complex: {action.is_complex()}")
    print("---")
Complex actions (like ACTION6) require additional data such as x,y coordinates when called.

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Actions Update Each Step

The available actions can change as you play. After each step, check action_space for the current set of valid actions: 
from arcengine import GameAction

# Initial actions
print(f"Initial actions: {[a.name for a in env.action_space]}")

# Take an action
obs = env.step(GameAction.ACTION1)

# Actions may have changed
print(f"Current actions: {[a.name for a in env.action_space]}")

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Using Actions in Your Agent

Below is a an example of picking a random action from those available: 
import random
from arcengine import GameAction

actions = env.action_space

# Choose a random available action
action = random.choice(actions)

# Handle complex actions that need coordinates
action_data = {}
if action.is_complex():
    action_data = {"x": 32, "y": 32}

obs = env.step(action, data=action_data)

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Next Steps