Nexus

About

The Nexus Hub is a Model Context Protocol (MCP) server that acts as an Agentic Commerce Bridge, enabling AI agents like Claude to engage in real-world transactions. Unlike traditional function calling, it implements 'Code Mode,' providing agents with a secure, sandboxed Python environment to 'think in code' and manage multi-step commerce workflows—from discovery and negotiation to transaction—all within a single turn. This tool serves as a universal adapter, instantly connecting any UCP-compliant merchant to MCP-supported LLMs, thereby offering immediate AI-readiness without the need for custom tool server configurations.

Key Features

• Context Efficiency: Utilizes a deferred loading registry to manage thousands of merchant tools without overwhelming agent context.
• Production-Grade Security: Implements Ed25519 signing and JWT (AP2 Mandates) for secure payments.
• Secure Protocol Translation: Automatically injects cryptographic headers and validates UCP-compliant schemas.
• Universal Protocol Proxy: Translates Python calls into conformant HTTP requests, handling heuristic routing and header injection.
• Code Mode & Orchestration: Agents execute Python scripts in a sandbox to manage complex commerce workflows.
• 1 GitHub stars

Use Cases

• Connecting any UCP business profile dynamically to MCP-supported LLMs.
• Enabling AI agents to perform multi-step commerce workflows (Discovery -> Negotiation -> Transaction).
• Providing instant AI-readiness for merchants implementing UCP.