"Free Graph and Network Visualization Tools (No API Key Required)" matching MCP servers:

Enables AI assistants to manage UniFi network infrastructure through 50+ tools covering devices, clients, networks, WiFi, firewall rules, and guest access using the official UniFi Network API.

Enables local MCP access to read TRMNL devices and manage playlist items, visibility, ordering, and weekly display windows.

Comprehensive development tools for Home Assistant, enabling file management, template testing, entity/state management, service calls, log access, and system information retrieval through MCP.

Provides read-only access to Shelly Cloud energy data, including live power, lifetime energy, and historical consumption with cost, enabling AI agents to monitor electricity usage without device control.

Enables to retrieve device information, images, media, location, thumbnails, and events from the Safie API through MCP.

Set up Android TV, Google TV and Fire TV boxes over ADB on the local network: discover and pair boxes, set any launcher as the HOME app, install apps, take screenshots and run checks. No raw shell tool; the tools that change the box ask before they run.

A Multi-Agent Conversation Protocol server that provides an interface to Google's Cloud IoT API, allowing agents to interact with and manage IoT devices and registries through natural language.

Enables AI assistants to discover, configure, harden, and troubleshoot multi-brand home and homelab networks through MCP, backed by declarative Terraform/OpenTofu orchestration. Includes safety guardrails, drift detection, snapshots, rollback, and zero-trust device controls.

Enables AI agents to interact with Homey home automation systems for managing flows, devices, and zones. Perfect for bulk automation tasks like batch renaming flows, organizing them into folders, and managing devices across zones through natural language.

Controls GREE/EWPE-compatible WiFi air conditioners directly over your LAN using native UDP protocol. No Homebridge or cloud required.

Enables AI agents to control an ESP32 board's relays, GPIO pins and analog sensors over a small HTTP API on the local network, with no cloud service in the middle.

Enables registration, monitoring, and control of IoT devices via AI agents, with local storage and no cloud API key required.

Enables Claude to control Philips Hue lights through a Hue Bridge on the local network, handling plain-language requests for on/off, brightness, color, scenes, looping effects, and whole-room power budgets. Fades and timers run on the bridge itself, and no Hue cloud account is required.

Control a Vizio SmartCast TV over your local network via the SmartCast local API, with no cloud required.

Enables natural language interaction with Connhex IoT platform APIs for managing devices, telemetry, rules, and resources via MCP tools.

Enables LLM sessions to query the SensorMesh open IoT sensor data commons, including device inventory, filtered reading windows, and per-sensor statistics, with no API keys required.

Enables controlling PiShock devices (shock, vibrate, beep) via the MCP protocol with API key authentication.

Enables AI agents to control a Samsung Tizen smart TV on the local network directly over its local APIs, with no cloud account or hub required. Agents can check power and volume status, switch the TV on or off, send remote keys, type text, launch apps, and play YouTube videos, all under configurable volume and key-press guardrails.

Exposes real-time soil sensor metrics as MCP Resources and irrigation valve controls as MCP Tools, enabling AI-driven agronomic decisions with built-in safety guardrails.

Enables AI agents to monitor and control Nokia G-2425G-A GPON home routers (e.g., Airtel) via natural language, including listing connected devices, and blocking or unblocking internet access for specific devices.