Multi-Agents provides a structured environment where different AI agents—such as planners, executors, and critics—coordinate to solve multi-step tasks. The planner agent breaks down high-level goals into sub-tasks, the executor agent interacts with external APIs or tools to carry out each step, and the critic agent reviews outcomes for accuracy and consistency. Memory modules allow agents to store context across interactions, while a messaging system ensures seamless communication. The framework is extensible, letting users add custom roles, integrate proprietary tools, or swap LLM backends for specialized use cases.

OpenAgentSpec defines a comprehensive set of JSON schemas, API interfaces, and protocol guidelines for AI agents. It covers agent registration, capability declaration, messaging formats, event handling, memory management, and extension mechanisms. By following the spec, organizations can create agents that communicate reliably with each other and with host environments, reducing integration effort and fostering a reusable ecosystem of interoperable AI components.

Autonomous Economic Agents (AEA) by Fetch.ai is a versatile framework that empowers developers to design, implement, and orchestrate autonomous software agents capable of interacting with each other, external environments, and digital ledgers. Leveraging a plugin-based architecture, AEA provides pre-built modules for communication protocols, cryptographic ledger APIs, decentralized identity, and customizable decision-making skills. Agents can discover and transact within decentralized marketplaces, perform goal-driven behaviors, and adapt through real-time data feeds. The framework supports simulation tools for testing and debugging multi-agent scenarios, as well as deployment onto live blockchains or peer-to-peer networks. With built-in interoperability and agent-to-agent messaging, AEA streamlines the development of complex autonomous economic applications such as energy trading, supply chain optimization, and smart IoT coordination.

Fetch.ai’s Autonomous Economic Agents (AEA) Framework is an open-source Python SDK and CLI toolset for creating modular, autonomous agents that can negotiate, transact, and collaborate in decentralized environments. It includes scaffolding commands to generate agent projects, templates for protocols and skills, connection modules to integrate with multiple ledgers (Ethereum, Cosmos, etc.), contract interfaces, behavior and decision‐making components, testing and simulation utilities, and a publishing mechanism to distribute agents on the Open Economic Framework network. Developers leverage its modular architecture to rapidly prototype digital workers for DeFi trading, data marketplaces, IoT coordination, and supply chain automation.