The openbci-mcp server provides a comprehensive platform for interfacing with OpenBCI EEG/BCI hardware via BrainFlow. It enables hardware management, real-time data streaming, signal processing, data export, neurofeedback via OSC triggers, a web dashboard, agentic workflow automation, and built-in help.

• Hardware Management: Connect, disconnect, and monitor OpenBCI boards (Cyton via serial/USB, Ganglion via BLE, Galea, synthetic, or streaming modes). List available serial ports and board types, check connection status.

• Data Streaming: Start/stop EEG streaming into a ring buffer, take snapshots of latest samples per channel, and insert timestamped event markers (e.g., for P300/speller experiments).

• Signal Processing: Compute real-time band powers (delta, theta, alpha, beta, gamma) per channel. Apply filters: bandpass, lowpass, highpass, or notch (including 60 Hz).

• Data Export: Record live EEG to CSV files via BrainFlow's file streamer, or forward data to multicast addresses for OpenBCI GUI or custom applications. Supports custom BrainFlow streamer configurations.

• OSC Triggers & Neurofeedback: Send one-shot OSC messages to targets like VRChat, Reaper, or osc-mcp. Create persistent threshold-based rules that automatically fire OSC messages when band power conditions are met. Manage rules (list, remove, evaluate) and review firing history.

• Web Dashboard: Access a live web dashboard showing EEG traces and band power visualizations, along with integrated help documentation.

• Agentic Workflows: Define multi-step BCI workflows in natural language; the server automatically chains available tools using FastMCP sampling to perform complex tasks (e.g., connect board, start stream, compute band power).

• Help & Discovery: Built-in tool provides an overview of all tools, quickstart guides, fleet port assignments (frontend: 10758, backend: 10759), and hardware setup instructions.

Integration with VRChat via OSC protocol for sending trigger rules based on EEG data, allowing real-time avatar control or interactions driven by brain signals.

1. Click on "Install Server".

2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.

3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@openbci-mcp connect to Cyton on COM3 and start streaming"

That's it! The server will respond to your query, and you can continue using it as needed.

Here is a step-by-step guide with screenshots.