Development

A declarative statement made with the intention of guiding architectural design decisions in order to achieve one or more qualities of a system.

If we take a closer look at this definition, we find several interesting parts in this definition. "[...] intention of guiding architectural design decisions [...]" As a software architect or a team of software engineers, you have to deal with and decide on many architecture issues. But how do you decide these questions? Gut feeling? :-) That's is probably not the right approach. As we learn from the Software Architecture Canvas, there are quality goals that are drivers of architecture.

What are the basic characteristics of good architecture principles?

Comprehensible & clear

Architectural principles should be like marketing slogans.

Testable The principle should be verifiable, whether work is done according to the principle and where exceptions are made.

Atomic The principle requires no further context or knowledge to be understood. In summary, architectural principles should be written to enable teams to make decisions: they're clear, provide decision support, and are atomic.

What are the pitfalls of creating architecture principles? What do you think about the following principle 👇? "All software should be written in a scalable manner."

That's why we've adopted in a product team the following architecture principle. "Use cloud services if being lock-in to a particular cloud provider is acceptable."

Whether this vendor lock-in is acceptable depends on several criteria: The effort required to replace this managed service An acceptable lead time for providing alternatives. Let's take a look at an example technological decision we had to make in the past: We needed to evaluate a centralised identity and access management solution for our SaaS products. In addition to meeting the functional requirements, we had two powerful IAM solutions on the shortlist: Keycloak (self-hosted) Auth0 (Managed, cloud service)

Following the defined principle of "Use cloud services if being lock-in to a particular cloud provider is acceptable." we have concluded that a centralised IAM system should be self-managed and not managed by a third-party provider because it's a huge effort to replace a managed IAM product and therefore there is no reasonable lead time to deploy an alternative. In summary, vendor locking wasn't acceptable to us in this case. So this principle efficiently guides us to the right decision.

Example 2: "Prefer standard data formats over third-party and custom formats"

The next principle was about the selection of protocols for service communication. "Prefer standard data formats over third-party and custom formats"

If you have multiple services that need to communicate with each other, the question of protocol and format arises. In the protocol ecosystem there is a fairly new kid on the block: gRPC gRPC (gRPC Remote Procedure Calls) is a cross-platform, open-source, high-performance protocol for remote procedure calls. gRPC was originally developed by Google to connect a large number of microservices. So in our team, the question is: RESTful HTTP vs. gRPC?

The selection of a protocol thus depends heavily on the quality and change scenarios of the services involved. But if you can meet the quality goals and underlying requirements with both options, like RESTful HTTP vs. gRPC, then consider yourself lucky to have such a principle. This principle helped us choose RESTful HTTP over gRPC because RESTful HTTP is a widely accepted standard data format, while gRPC is more of a third-party format. So here this principle speeds up our decision making, which doesn't mean that we don't rely on gRPC in certain cases.

Software architecture may be changing in the way it's practiced, but it's more important than ever.

The “Database as Code” Manifesto

Introducing Atomic Agents

Atomic Agents is an open-source framework designed to be as lightweight, modular, and composable as possible. It embraces the principles of the Input–Process–Output (IPO) model and atomicity, ensuring that every component is single-purpose, reusable, and interchangeable.

Why Does Atomic Agents Exist? Atomic Agents was born out of the necessity to address the shortcomings of existing frameworks. It aims to: Streamline AI development by providing clear, manageable components. Eliminate redundant complexity and unnecessary abstractions that plague other frameworks. Promote flexibility and consistency, allowing developers to focus on building effective AI applications rather than wrestling with the framework itself. Encourage best practices by gently nudging developers toward modular, maintainable code structures.

The Programming Paradigms Behind Atomic Agents

The Input–Process–Output (IPO) Model At the core of Atomic Agents lies the Input–Process–Output (IPO) model, a fundamental programming paradigm that structures programs into three distinct phases: Input: Data is received from the user or another system. Process: The data is manipulated or transformed. Output: The processed data is presented as a result. This model promotes clarity and simplicity, making it easier to understand and manage the flow of data through an application.

In Atomic Agents, this translates to: Input Schemas: Define the structure and validation rules for incoming data using Pydantic. Processing Components: Agents and tools perform operations on the data. Output Schemas: Ensure that the results are structured and validated before being returned.

Atomicity: Building Blocks of Functionality The concept of atomicity involves breaking down complex systems into their smallest functional parts, or “atoms.” Each atom: Has a single responsibility, making it easier to understand and maintain. Is reusable, allowing for components to be used across different parts of an application or even in different projects. Can be combined with other atoms to build more complex functionalities. By focusing on atomic components, Atomic Agents promotes a modular architecture that enhances flexibility and scalability.

The Anatomy of an Agent In Atomic Agents, an AI agent is composed of several key components: System Prompt: Defines the agent’s behavior and purpose. Input Schema: Specifies the expected structure of input data. Output Schema: Defines the structure of the output data. Memory: Stores conversation history or state information. Context Providers: Inject dynamic context into the system prompt at runtime. Tools: External functions or APIs the agent can utilize. Each component is designed to be modular and interchangeable, adhering to the principles of separation of concerns and single responsibility.

Modularity and Composability Modularity is at the heart of Atomic Agents. By designing components to be self-contained and focused on a single task, developers can: Swap out tools or agents without affecting the rest of the system. Fine-tune individual components, such as system prompts or schemas, without unintended side effects. Chain agents and tools seamlessly by aligning their input and output schemas.

Chaining Schemas and Agents Atomic Agents simplifies the process of chaining agents and tools by aligning their input and output schemas. Example: Suppose you have a query generation agent and a web search tool. By setting the output schema of the query agent to match the input schema of the search tool, you can directly chain them.

Why Atomic Agents Is Better Than the Rest Eliminating Unnecessary Complexity Unlike frameworks that introduce multiple layers of abstraction, Atomic Agents keeps things straightforward. Each component serves a clear purpose, and there’s no hidden magic to decipher. Transparent Architecture: You have full visibility into how data flows through your application. Easier Debugging: With less complexity, identifying and fixing issues becomes more manageable. Reduced Learning Curve: Developers can get up to speed quickly without needing to understand convoluted abstractions.

Standalone and Reusable Components Each part of Atomic Agents can be run independently, promoting reusability and modularity. Testable in Isolation: Components can be individually tested, ensuring reliability before integration. Reusable Across Projects: Atomic components can be used in different applications, saving development time. Easier Maintenance: Isolating functionality reduces the impact of changes and simplifies updates.

Built by Developers, for Developers Atomic Agents is designed with real-world development challenges in mind. It embraces time-tested programming paradigms and prioritizes developer experience. Solid Programming Foundations: By following the IPO model and atomicity, the framework encourages best practices. Flexibility and Control: Developers have the freedom to customize and extend components as needed. Community-Driven: As an open-source project, it invites contributions and collaboration from the developer community.

The Atomic Assembler CLI: Managing Tools Made Easy

One of the standout features of Atomic Agents is the Atomic Assembler CLI, a command-line tool that simplifies the management of tools and agents.

Manually download the tools or copy/paste their source code from the Atomic Agents GitHub repository and place them in the atomic-forge folder.

The option we will use, the Atomic Assembler CLI to download the tools.

Key Features Download and Manage Tools: Easily add new tools to your project without manual copying or dependency issues. Avoid Dependency Clutter: Install only the tools you need, keeping your project lean. Modify Tools Effortlessly: Each tool is self-contained with its own tests and documentation. Access Tools Directly: If you prefer, you can manage tools manually by accessing their folders.

What’s an OpenAI Assistant? Think of it as a software glue that affords you to gel together agent-like capabilities in your applications to conduct tasks expressed as instructions in natural language to an Assistant. Able to understand instructions, it can leverage OpenAI’s SOTA models and tools to carry out tasks. With Assistants stateful API, you can create Assistants within your application, providing you access to three types of supported tools: Code Interpreter, Retrieval, and Function calling [5]. At the core it has few concepts and components that cogently interact together, to enable agent-like capabilities.

Assistants API, concepts, components, and tools Unfortunately, OpenAI documentation falls short in explaining or illustrating these components into finer details and showing how they work together. Randy Michak of Empowerment AI does a fine job of dissecting these core components and illustrating their flow and data interactions [7]. Inspired by Michak, I mildly modified Figure 4, showing dynamic interaction and data flowing among Assistants API components.

To get started with Assistants, the OpenAI guide stipulates four simple steps to use the Assistants API to glue together these core components for coordination [8]. Step 1: Create an Assistant, to declare a custom model and provide instructions for the Assistant. This helps the Assistant to elect the appropriate supported tool to employ. Step 2: Create a Thread, a stateful session for the Assistant to retrieve messages from and add Assistant messages to. Step 3: Use the Thread as a conversational session to add messages for the assistants to consume. Step 4: Run the Assistant on a newly added Thread message to trigger responses. This run is Assistant’s asynchronous runtime environment.

How does it all work together?

Let’s methodically walk through a simple example where we want to accomplish the following: Integrate Assistants API, using Retrieval tool, to a) upload a couple of pdf documents and b) use an Assistant to query the contents of the document. Consider this as a mini Retrieval Augmented Generation (RAG) application. Use Files objects to upload the pdf files so that the Assistant can access them. Create and employ the Assistant, Threads, Messages, and Run objects to query the uploaded pdf documents. Coordinate all these concrete objects to interact and interplay together as part of my application.

Step 1: Create File objects as our knowledge base Upload your PDFs in the retrievers’ database, using a File object. The Assistants API breaks them into parts, as chunks, and saves them, as indexes and vector embeddings. When you ask a question, Retrievers find the best matches and help the Assistant give you a detailed answer, just like a big RAG retriever.

Step 2: Create an Assistant object. To use an Assistant and conduct tasks, first, create an AI Assistant object. Supply the Assistant with a model, instructional behavior, tools to use, and file IDs to employ for its knowledge base, as parameters.

Both OpenAI programing guide and Anyscale Endpoints blog [7] distill down to simple steps: Call the model with the user query and a list of functions defined in the Chat Completions API parameter as tools. The model can choose to call one or more functions; if so, the content will be a stringified JSON object adhering to your custom schema. Parse the string into JSON in your code, and call your function with the provided arguments if they exist. Call the model again by appending the function response as a new message, and let the model summarize the results back to the user. Following the above simple steps, our user_content to the LLM generates three required parameters (location, latitude, longitude) as a JSON object in its response.

Examples and Use Cases of Function Calling in LLM

Apart from the above use cases mentioned in the Open AI programming guide [10], Ben Lorica visually and comprehensively captures use cases of general function calling in LLMs, including the OpenAI Assistant Tools API [11]. Lorica succinctly states that early use cases include applications such as customer service chatbots, data analysis assistants, and code generation tools. Other examples extend to creative, logistical, and operational domains: writing assistants, scheduling agents, summarizing news., etc.

An Assistant represents an entity that can be configured to respond to a user's messages using several parameters like model, instructions, and tools.