Overview

• Introduced by Anthropic in November 2024, the open Model Context Protocol has quickly become a de facto standard, with reported integrations by OpenAI, Google DeepMind, Block, Replit, Codeium, and Sourcegraph.
• New reporting details concrete IoT deployments where AI agents request sensor readings, trigger actuators, stream telemetry, and operate on constrained hardware such as Raspberry Pi and Jetson Nano for local decisions.
• MCP exposes capabilities as RPC-style methods through a uniform JSON-RPC 2.0 interface with strict schemas and human-readable documentation, enabling models to reason about and safely invoke tools.
• Deployments span multiple transports including stdio, HTTP, and server-sent events, with adaptation to lightweight messaging like MQTT described for constrained and intermittent environments.
• Security analyses flag risks such as prompt injection, unauthorized control, and rogue servers, with recommended mitigations including authentication, tool whitelisting, container isolation, runtime verification, and rigorous server vetting.