Top PROTOCOL GitHub Repositories & Tools (2026)

A curated list of the best awesome AI plugins for AI assistants including Claude Code, OpenAI Codex / ChatGPT, Gemini, Antigravity, Pi / Oh My Pi, Grok, OpenCode and More. https://hol.org/plugins

Fast service fingerprinting CLI for 170+ protocols (TCP/UDP/SCTP) - built by Praetorian

A complete typescript implementation of the Matter protocol specification (https://buildwithmatter.com). Includes full support for controller, device, commissioning, secure communications, device types, and cluster definitions.

Fast FIX protocol library for the JVM

Tableau's official MCP Server. Helping agents see and understand data.

Local MCP work notes with persistent sessions, decisions, evidence and resumable tasks.

LSP implementation for the fish shell language 🐠

Agent Skills for medical research — literature search, reporting-guideline & citation checks, statistics, publication figures, submission. Works with Claude Code, Codex, Cursor & GitHub Copilot. Built by a physician-researcher, tested on real publications. MIT.

Local-first, governed AI agent runtime for Python — embed it in your app, or run it as a CLI or ACP server. Permissions, MCP, memory and audit replay built in.

The open standard for agent coordination

Model Context Protocol server for AFFiNE. Connect AI assistants to AFFiNE workspaces, documents, databases, and collaboration APIs over stdio or HTTP.

Python library for parsing and generating UBX GPS/GNSS protocol messages.

Self-hosted, open-source financial data MCP server for AI agents — SEC filings, XBRL financials, 13F holdings, insider & congressional trades, short interest, FRED, CFTC/CBOE and daily prices across 64 MCP tools. Equibles Cloud adds earnings call transcripts, live quotes, options chains with Greeks, guidance and a screener.

Model Context Protocol (MCP) server for Opik, the open-source LLM observability and evaluation platform, built by Comet. Read traces, log scores, and manage prompts from Claude Code, Cursor, or VS Code.

A federated, text-based social network with a Gemini frontend

Mavlink library (2.0 and 1.0) for the Go programming language

lnwjud — local AI-agent runtime & MCP gateway

Composable mathematics tools for agents

MCP server for reusable prompt templates, multi-step workflow chains, and quality gates. Compose agentic workflows with an operator syntax; export as native skills to Claude Code, Cursor, OpenCode, and Gemini CLI.

Chrome Devtools Protocol client for PHP