Introduction to Nexus Orchestrator
Relevant source files
The following files were used as context for generating this wiki page:
Nexus Orchestrator is an autonomous infrastructure orchestration system designed specifically for AI agents. It operates as a local-first, background daemon—effectively acting as a "nervous system" for AI development. Nexus bridges the gap between AI agents and their operating environments by managing connectivity, state, and security autonomously.
Sources: README.md:1-10
Core Architecture and Pillars
The system is built upon four foundational pillars that define its operational capabilities:
- Connectivity Layer: Utilizes the Model Context Protocol (MCP) to facilitate communication between AI agents and underlying infrastructure.
- Orchestration Layer: Employs LangGraph to manage complex workflows and agent decision-making processes.
- Context Layer: Maintains persistent state and tracks active agents via specialized files like
AGENTS.md. - Governance Layer: Implements Open Policy Agent (OPA) and Zero Trust security principles to manage non-human identities.
Sources: README.md:12-16
The following diagram illustrates the high-level relationship between the core layers of the Nexus Orchestrator:
Sources: README.md:12-16
Agent Management and Context
Nexus tracks all AI agents interacting with the system to ensure traceability and security. This is primarily managed through the AGENTS.md registry, which records identifying information and security parameters for each agent.
Agent Registry Structure
The registry categorizes agents using the following attributes:
| Field | Description |
|---|---|
| Agent ID | Unique identifier for the specific AI agent instance. |
| Description | Functional summary of the agent's purpose. |
| Trust Level | Security tier assigned for Zero Trust policy enforcement. |
Sources: context/AGENTS.md:1-8
Infrastructure and Connectivity
The orchestrator functions as an "Autonomous Infrastructure Daemon," handling low-level tasks that typically require human intervention.
SSH Connectivity
Nexus manages SSH connectivity autonomously, allowing agents to interact with remote environments without manual configuration of keys or tunnels. This is facilitated through dedicated MCP servers tailored for SSH operations.
Sources: README.md:5-10, mcp-servers/ssh/README.md
Provisioning and Environment Setup
The system uses automated scripts and Infrastructure as Code (IaC) to prepare environments. This ensures that the operating environment is consistent and meets the requirements of the AI agents.
Governance and Security
Nexus implements a "Zero Trust" model for non-human identities. Unlike traditional systems that may rely on static credentials, Nexus uses dynamic governance through Open Policy Agent (OPA) to evaluate every interaction between an agent and the infrastructure.
Key security features include:
- Autonomous SSH Management: Reduces the risk of credential leakage.
- Identity-Based Access: Every agent is treated as a unique identity with a specific trust level.
- Background Orchestration: The "nervous system" approach ensures that security policies are applied continuously in the background.
Sources: README.md:16, context/AGENTS.md:1-8
Summary
Nexus Orchestrator serves as the critical middleware that allows AI agents to safely and efficiently interact with complex infrastructure. By synthesizing MCP, LangGraph, and OPA, it provides a robust framework for autonomous development where infrastructure management is abstracted away from the agent's core logic.