📖 Docs: readthedocs
🚀 Simple Robot Agent Example: 
💻 Simulation Example with SimplerEnv:
🤖 Motor Agent using OpenVLA:
⏺️ Record Dataset on a Robot
🫡 Support, Discussion, and How-To's :
Updates:
Aug 6 2024, embodied-agents v1.1
- Added the features to record dataset on robot natively.
- Add multiple new Sensory Agents, i.e. depth estimation, object detection, image segmentation with public API endpoints hosted.
June 30 2024, embodied-agents v1.0:
- Added Motor Agent supporting OpenVLA with free API endpoint hosted.
- Added Sensory Agent supporting i.e. 3D object pose detection.
- Improved automatic dataset recording.
- Agent now can make remote act calls to API servers i.e. Gradio, vLLM.
- Bug fixes and performance improvements have been made.
- PyPI project is renamed to
mbodied.
embodied agents is a toolkit for integrating large multi-modal models into existing robot stacks with just a few lines of code. It provides consistency, reliability, scalability and is configurable to any observation and action space.
This repository is broken down into 3 main components: Agents, Data, and Hardware. Inspired by the efficiency of the central nervous system, each component is broken down into 3 meta-modalities: Language, Motion, and Sense. Each agent has an act method that can be overridden and satisfies:
- Language Agents always return a string.
- Motor Agents always return a
Motion. - Sensory Agents always return a
SensorReading.
A call to act or async_act can perform local or remote inference synchronously or asynchronously. Remote execution can be performed with Gradio, httpx, or different LLM clients. Validation is performed with Pydantic.
- Language Agents natively support OpenAI, Anthropic, Ollama, vLLM, Gradio, etc
- Motor Agents natively support OpenVLA, RT1(upcoming)
- Sensory Agents support Depth Anything, YOLO, Segment Anything 2
Jump to getting started to get up and running on real hardware or simulation. Be sure to join our Discord for 🥇-winning discussions :)
⭐ Give us a star on GitHub if you like us!
There is a signifcant barrier to entry for running SOTA models in robotics
It is currently unrealistic to run state-of-the-art AI models on edge devices for responsive, real-time applications. Furthermore, the complexity of integrating multiple models across different modalities is a significant barrier to entry for many researchers, hobbyists, and developers. This library aims to address these challenges by providing a simple, extensible, and efficient way to integrate large models into existing robot stacks.
Facillitate data-collection and sharing among roboticists.
This requires reducing much of the complexities involved with setting up inference endpoints, converting between different model formats, and collecting and storing new datasets for future availibility.
We aim to achieve this by:
- Providing simple, Python-first abstrations that are modular, extensible and applicable to a wide range of tasks.
- Providing endpoints, weights, and interactive Gradio playgrounds for easy access to state-of-the-art models.
- Ensuring that this library is observation and action-space agnostic, allowing it to be used with any robot stack.
Beyond just improved robustness and consistency, this architecture makes asynchronous and remote agent execution exceedingly simple. In particular we demonstrate how responsive natural language interactions can be achieved in under 30 lines of Python code.
Embodied Agents are not yet capable of learning from in-context experience:
- Frameworks for advanced RAG techniques are clumsy at best for OOD embodied applications however that may improve.
- Amount of data required for fine-tuning is still prohibitively large and expensive to collect.
- Online RL is still in its infancy and not yet practical for most applications.
- This library is intended to be used for research and prototyping.
- This library is still experimental and under active development. Breaking changes may occur although they will be avoided as much as possible. Feel free to report issues!
- Extensible, user-friendly python SDK with explicit typing and modularity
- Asynchronous and remote thread-safe agent execution for maximal responsiveness and scalability.
- Full-compatiblity with HuggingFace Spaces, Datasets, Gymnasium Spaces, Ollama, and any OpenAI-compatible api.
- Automatic dataset-recording and optionally uploads dataset to huggingface hub.
- Closed: OpenAI, Anthropic
- Open Weights: OpenVLA, Idefics2, Llava-1.6-Mistral, Phi-3-vision-128k-instruct
- All gradio endpoints hosted on HuggingFace spaces.
- More Motor Agents
- Yolo, SAM2, DepthAnything Sensory Agents
- FineTuning Scripts
pip install mbodied
# For audio support
pip install mbodied[audio]Or install from source:
pip install git+https://github.com/mbodiai/embodied-agents.gitfrom mbodied.types.motion.control import HandControl, FullJointControl
from mbodied.types.motion import AbsoluteMotionField, RelativeMotionField
class FineGrainedHandControl(HandControl):
comment: str = Field(None, description="A comment to voice aloud.")
index: FullJointControl = AbsoluteMotionField([0,0,0],bounds=[-3.14, 3.14], shape=(3,))
thumb: FullJointControl = RelativeMotionField([0,0,0],bounds=[-3.14, 3.14], shape=(3,))import os
from mbodied.agents import LanguageAgent
from mbodied.agents.motion import OpenVlaAgent
from mbodied.agents.sense.audio import AudioAgent
from mbodied.robots import SimRobot
cognition = LanguageAgent(
context="You are an embodied planner that responds with a python list of strings and nothing else.",
api_key=os.getenv("OPENAI_API_KEY"),
model_src="openai",
recorder="auto",
)
audio = AudioAgent(use_pyaudio=False, api_key=os.getenv("OPENAI_API_KEY")) # pyaudio is buggy on mac
motion = OpenVlaAgent(model_src="https://api.mbodi.ai/community-models/")
# Subclass and override do() and capture() methods.
robot = SimRobot()
instruction = audio.listen()
plan = cognition.act(instruction, robot.capture())
for step in plan.strip('[]').strip().split(','):
print("\nMotor agent is executing step: ", step, "\n")
for _ in range(10):
hand_control = motion.act(step, robot.capture())
robot.do(hand_control)Example Scripts:
- 1_simple_robot_agent.py: A very simple language based cognitive agent taking instruction from user and output voice and actions.
- 2_openvla_motor_agent_example.py: Run robotic transformers, i.e. OpenVLA, in several lines on the robot.
- 3_reason_plan_act_robot.py: Full example of language based cognitive agent and OpenVLA motor agent executing task.
- 4_language_reason_plan_act_robot.py: Full example of all languaged based cognitive and motor agent executing task.
- 5_teach_robot_record_dataset.py: Example of collecting dataset on robot's action at a specific frequency by just yelling at the robot!
Real Robot Hardware:
Simulation with: SimplerEnv :
Run OpenVLA with embodied-agents in simulation:
Record dataset on a robot:
The Sample Class
The Sample class is a base model for serializing, recording, and manipulating arbitrary data. It is designed to be extendable, flexible, and strongly typed. By wrapping your observation or action objects in the Sample class, you'll be able to convert to and from the following with ease:
- A Gym space for creating a new Gym environment.
- A flattened list, array, or tensor for plugging into an ML model.
- A HuggingFace dataset with semantic search capabilities.
- A Pydantic BaseModel for reliable and quick json serialization/deserialization.
To learn more about all of the possibilities with embodied agents, check out the documentation
- You can
packa list ofSamples or Dicts into a singleSampleorDictandunpackaccordingly? - You can
unflattenany python structure into aSampleclass so long you provide it with a valid json schema?
Creating a Sample requires just wrapping a python dictionary with the Sample class. Additionally, they can be made from kwargs, Gym Spaces, and Tensors to name a few.
from mbodied.types.sample import Sample
# Creating a Sample instance
sample = Sample(observation=[1,2,3], action=[4,5,6])
# Flattening the Sample instance
flat_list = sample.flatten()
print(flat_list) # Output: [1, 2, 3, 4, 5, 6]
# Generating a simplified JSON schema
>>> schema = sample.schema()
{'type': 'object', 'properties': {'observation': {'type': 'array', 'items': {'type': 'integer'}}, 'action': {'type': 'array', 'items': {'type': 'integer'}}}}
# Unflattening a list into a Sample instance
Sample.unflatten(flat_list, schema)
>>> Sample(observation=[1, 2, 3], action=[4, 5, 6])The Sample class leverages Pydantic's powerful features for serialization and deserialization, allowing you to easily convert between Sample instances and JSON.
# Serialize the Sample instance to JSON
sample = Sample(observation=[1,2,3], action=[4,5,6])
json_data = sample.model_dump_json()
print(json_data) # Output: '{"observation": [1, 2, 3], "action": [4, 5, 6]}'
# Deserialize the JSON data back into a Sample instance
json_data = '{"observation": [1, 2, 3], "action": [4, 5, 6]}'
sample = Sample.model_validate(from_json(json_data))
print(sample) # Output: Sample(observation=[1, 2, 3], action=[4, 5, 6])# Converting to a dictionary
sample_dict = sample.to("dict")
print(sample_dict) # Output: {'observation': [1, 2, 3], 'action': [4, 5, 6]}
# Converting to a NumPy array
sample_np = sample.to("np")
print(sample_np) # Output: array([1, 2, 3, 4, 5, 6])
# Converting to a PyTorch tensor
sample_pt = sample.to("pt")
print(sample_pt) # Output: tensor([1, 2, 3, 4, 5, 6])gym_space = sample.space()
print(gym_space)
# Output: Dict('action': Box(-inf, inf, (3,), float64), 'observation': Box(-inf, inf, (3,), float64))See sample.py for more details.
The Message class represents a single completion sample space. It can be text, image, a list of text/images, Sample, or other modality. The Message class is designed to handle various types of content and supports different roles such as user, assistant, or system.
You can create a Message in versatile ways. They can all be understood by mbodi's backend.
from mbodied.types.message import Message
Message(role="user", content="example text")
Message(role="user", content=["example text", Image("example.jpg"), Image("example2.jpg")])
Message(role="user", content=[Sample("Hello")])The Backend class is an abstract base class for Backend implementations. It provides the basic structure and methods required for interacting with different backend services, such as API calls for generating completions based on given messages. See backend directory on how various backends are implemented.
Agent is the base class for various agents listed below. It provides a template for creating agents that can talk to a remote backend/server and optionally record their actions and observations.
The Language Agent can connect to different backends or transformers of your choice. It includes methods for recording conversations, managing context, looking up messages, forgetting messages, storing context, and acting based on an instruction and an image.
Natively supports API services: OpenAI, Anthropic, vLLM, Ollama, HTTPX, or any gradio endpoints. More upcoming!
To use OpenAI for your robot backend:
from mbodied.agents.language import LanguageAgent
agent = LanguageAgent(context="You are a robot agent.", model_src="openai")To execute an instruction:
instruction = "pick up the fork"
response = robot_agent.act(instruction, image)Language Agent can connect to vLLM as well. For example, suppose you are running a vLLM server Mistral-7B on 1.2.3.4:1234. All you need to do is:
agent = LanguageAgent(
context=context,
model_src="openai",
model_kwargs={"api_key": "EMPTY", "base_url": "http://1.2.3.4:1234/v1"},
)
response = agent.act("Hello, how are you?", model="mistralai/Mistral-7B-Instruct-v0.3")Motor Agent is similar to Language Agent but instead of returning a string, it always returns a Motion. Motor Agent is generally powered by robotic transformer models, i.e. OpenVLA, RT1, Octo, etc.
Some small model, like RT1, can run on edge devices. However, some, like OpenVLA, may be challenging to run without quantization. See OpenVLA Agent and an example OpenVLA server
These agents interact with the environment to collect sensor data. They always return a SensorReading, which can be various forms of processed sensory input such as images, depth data, or audio signals.
Currently, we have:
agents that process robot's sensor information.
The motion_controls module defines various motions to control a robot as Pydantic models. They are also subclassed from Sample, thus possessing all the capability of Sample as mentioned above. These controls cover a range of actions, from simple joint movements to complex poses and full robot control.
You can integrate your custom robot hardware by subclassing Robot quite easily. You only need to implement do() function to perform actions (and some additional methods if you want to record dataset on the robot). In our examples, we use a mock robot. We also have an XArm robot as an example.
Recording a dataset on a robot is very easy! All you need to do is implement the get_observation(), get_state(), and prepare_action() methods for your robot. After that, you can record a dataset on your robot anytime you want. See examples/5_teach_robot_record_dataset.py and this colab:
from mbodied.robots import SimRobot
from mbodied.types.motion.control import HandControl, Pose
robot = SimRobot()
robot.init_recorder(frequency_hz=5)
with robot.record("pick up the fork"):
motion = HandControl(pose=Pose(x=0.1, y=0.2, z=0.3, roll=0.1, pitch=0.2, yaw=0.3))
robot.do(motion)Dataset Recorder is a lower level recorder to record your conversation and the robot's actions to a dataset as you interact with/teach the robot. You can define any observation space and action space for the Recorder. See gymnasium for more details about spaces.
from mbodied.data.recording import Recorder
from mbodied.types.motion.control import HandControl
from mbodied.types.sense.vision import Image
from gymnasium import spaces
observation_space = spaces.Dict({
'image': Image(size=(224, 224)).space(),
'instruction': spaces.Text(1000)
})
action_space = HandControl().space()
recorder = Recorder('example_recorder', out_dir='saved_datasets', observation_space=observation_space, action_space=action_space)
# Every time robot makes a conversation or performs an action:
recorder.record(observation={'image': image, 'instruction': instruction,}, action=hand_control)The dataset is saved to ./saved_datasets.
The Replayer class is designed to process and manage data stored in HDF5 files generated by Recorder. It provides a variety of functionalities, including reading samples, generating statistics, extracting unique items, and converting datasets for use with HuggingFace. The Replayer also supports saving specific images during processing and offers a command-line interface for various operations.
Example for iterating through a dataset from Recorder with Replayer:
from mbodied.data.replaying import Replayer
replayer = Replayer(path=str("path/to/dataset.h5"))
for observation, action in replayer:
...├─ assets/ ............. Images, icons, and other static assets
├─ examples/ ........... Example scripts and usage demonstrations
├─ resources/ .......... Additional resources for examples
├─ src/
│ └─ mbodied/
│ ├─ agents/ ....... Modules for robot agents
│ │ ├─ backends/ .. Backend implementations for different services for agents
│ │ ├─ language/ .. Language based agents modules
│ │ ├─ motion/ .... Motion based agents modules
│ │ └─ sense/ ..... Sensory, e.g. audio, processing modules
│ ├─ data/ ......... Data handling and processing
│ ├─ hardware/ ..... Hardware modules, i.e. camera
│ ├─ robot/ ........ Robot interface and interaction
│ └─ types/ ........ Common types and definitions
└─ tests/ .............. Unit testsWe welcome issues, questions and PRs. See the contributing guide for more information.
