The contemporary development of decentralized multi-agent systems confronts significant architectural challenges stemming from scalability and maintainability limitations inherent in traditional approaches. The Agent Squad framework emerges as a promising alternative, offering extensible modularity and contextual adaptability to address these challenges. What are the essential characteristics of a decentralized multi-agent system architecture compatible with the Agent Squad framework? This research identifies key elements for defining decentralized multi-agent system architectures and examines the distinctive contributions of the Agent Squad framework. A multi-method methodology combining quasi-experimentation in architectural design with hermeneutic triangulation is employed, integrating experimental findings, theoretical references, and reflective analysis. Results establish that Agent Squad constitutes an essential component for structuring distributed architectural methodologies. The framework significantly facilitates system construction through sophisticated architectural properties including dynamic adaptability, extensible modularity, and horizontal scalability. The study demonstrates substantial improvements in architectural design discipline and operational versatility. Theoretically, it enables advancement toward more reproducible methodological frameworks in multi-agent development. Agent Squad represents a viable foundation for robust multi-agent architectures that facilitate efficient and predictable development ecosystems. Notably, this work presents a detailed process for implementing a multi-agent system using the Agent Squad framework, specifying its main components and fundamental capabilities through a demonstration to support the software development process.