add-task-env - SKILL.md Agent Skill

name: add-task-env description: Use when creating a new task environment for EmbodiChain, including expert demonstration tasks, RL tasks or any EmbodiedEnv subclass

Add Task Environment

Scaffold a new task environment following EmbodiChain's conventions and patterns.

When to Use

User asks to create a new task or environment
User says "add a task", "new env", "create environment for X"

Steps

1. Determine Task Category

Ask the user:

Category: tableware, rl, or special (maps to embodichain/lab/gym/envs/tasks/<category>/)
Task name (snake_case, e.g. pick_place)
Gym ID (e.g. PickPlace-v1)
Task type: RL task (needs reward functors) or expert demonstration task (needs create_demo_action_list)

2. Create the Task File

Place at embodichain/lab/gym/envs/tasks/<category>/<name>.py.

Template:

# ----------------------------------------------------------------------------
# Copyright (c) 2021-2026 DexForce Technology Co., Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ----------------------------------------------------------------------------

from __future__ import annotations

import torch
from typing import Dict, Any, Tuple

from embodichain.lab.gym.utils.registration import register_env
from embodichain.lab.gym.envs import EmbodiedEnv, EmbodiedEnvCfg
from embodichain.lab.sim.types import EnvObs

__all__ = ["<CamelCaseName>Env"]


@register_env("<GymId>")
class <CamelCaseName>Env(EmbodiedEnv):
    """<One-line description of the task>.

    <Longer description of what the task involves and its reward structure.>
    """

    def __init__(self, cfg: EmbodiedEnvCfg = None, **kwargs):
        if cfg is None:
            cfg = EmbodiedEnvCfg()
        super().__init__(cfg, **kwargs)

    # Expert demo tasks: implement `create_demo_action_list`.
    # RL tasks: implement `check_truncated`, `get_reward`, `compute_task_state`.

3. Update Exports

Add to embodichain/lab/gym/envs/tasks/__init__.py:

from embodichain.lab.gym.envs.tasks.<category>.<name> import <CamelCaseName>Env

Add "<CamelCaseName>Env" to the __all__ list.

4. Create Test Stub

Place at tests/gym/envs/tasks/test_<name>.py.

5. Format

black embodichain/lab/gym/envs/tasks/<category>/<name>.py
black tests/gym/envs/tasks/test_<name>.py

Checklist

File has Apache 2.0 header
Uses from __future__ import annotations
@register_env decorator with unique gym ID
__all__ defined in the task module
Default cfg = EmbodiedEnvCfg() in __init__
Import and __all__ added to tasks/__init__.py
Test stub created
black run on both files