7 GitHub Repos That Made Me Addicted to Building with Claude AI

These repos are Elixir for Claude!

Let me be honest with you. When I first started coding with Claude, I thought it was neat and certainly useful. But I wasn't obsessed.

The turning point came when I stumbled into the ecosystem of open-source tools built around Claude.

These tools weren't just utilities, they were force multipliers. Each utility unlocked a new dimension of what Claude could do, and suddenly I found myself spending every free moment building, experimenting, and pushing the boundaries of AI-assisted development.

The Claude developer ecosystem has exploded in 2025 and 2026. What started as a handful of scripts and config files has grown into a rich landscape of MCP servers, memory systems, context engines, and developer toolkits.

Each repo I'm about to share solved a real pain point I was experiencing, and together they transformed Claude from a capable assistant into something that genuinely feels like an extension of my own development brain.

If you're using Claude Code, Claude Desktop, or any Anthropic-powered workflow, these seven repositories will change the way you build.

1. Claude Context - 12.2k⭐

One of the biggest limitation when using Claude for development on large codebases is its context window. Claude can't remember the entire codebase, specially if it is millions of lines of code.

Claude Context solves this problem by turning entire codebase into a searchable knowledge base using semantic search.

Built as an MCP Server, Claude Context uses a hybrid search approach combining BM25 keyword matching with dense vector embeddings. It indexes the entire codebase, letting Claude ask questions about code anywhere in the project. The most relevant snippets are retrieved and injected into the context window automatically.

What I liked the most -

• Cost Efficiency: I saved on token expenditure by ensuring relevant code information is retrieved effectively instead of a dozen of grep commands!
• Incremental Indexing: AST-aware chunking and Merkle-tree based incremental indexing ensures that the codebase can be indexed incrementally.

2. MCP Servers - 89.1k⭐

If Claude is the brain, MCP Servers are the organs.

The Model Context Protocol (MCP) is a standard protocol defined by Anthropic that enables AI models to securely interact with local and remote resources through standardized server implementations.

The MCP Servers repository (modelcontextprotocol/servers) is the repository for discovering these MCP servers. With over 89k stars on GitHub, the repository contains thousands of servers.

There is a similar (community maintained) repository called Awesome MCP Servers (punkpeye/awesome-mcp-servers).

What makes this repo addictive is the discovery loop. Every time I visit, I find a new server that solves a problem I didn't even know I had!

3. RTK AI - 74.3k⭐

Here is a real-world story that will make every Claude user pause and think -

A developer reported saving 10 million tokens, an 89% reduction, across their Claude Code sessions using RTK

The Rust Token Killer (RTK) is a CLI proxy that sits between the terminal and Claude, intercepting command outputs and compressing them before they reach the context window.

RTK is the single most impactful cost optimization tool I have found for Claude Code, and it works with zero configuration!

The idea is simple yet brilliant. When commands are executed, they emit a lot of irrelevant information that consume hundreds of tokens. RTK intercepts this and hands Claude a compressed version instead.

The real-world impact is substantial. For anyone paying per token or hitting context limits, RTK is a must! Install it once and it silently saves you tokens on every single command output for the rest of your development life.

4. Claude HUD - 27k⭐

One of the most frustrating things about working with Claude is the feeling of flying blind. Claude is doing something, files are being read and modified, tools are being invoked, but from our perspective, we are staring at a terminal with limited visibility into what is actually happening.

Claude HUD gives you better insights into what's happening in your Claude Code session.

• Project Path - Know which project you're in (configurable 1–3 directory levels)
• Context Health - Know exactly how full your context window is before it's too late
• Tool Activity - Watch Claude read, edit, and search files as it happens
• Agent Tracking - See which subagents are running and what they're doing
• ToDo Progress - Track task completion in real-time

The display is always visible and updates in real time, giving you the situational awareness that was previously impossible.

5. Awesome Claude Code - 51.5k⭐

Claude Code is deep. Deeper than most people realize when they first start using it. There are slash commands, hooks, subagent configurations, CLAUDE.md files, MCP integrations, and a dozen other features that most users never discover on their own.

Awesome Claude Code is the curated guide that pulls back the curtain on all of it. It is a hand-picked, community-maintained directory of everything you need to go from Claude Code beginner to power user, and it covers the full spectrum of what makes Claude Code exceptional.

This repository contains guide on Claude Code Hooks, Skills collection, slash commands, subagent files, agent orchestrators, MCP server configurations, and plugin directories. Each resource is cleanly laid out to make it easier for discovery!

6. Claude Mem - 89.3k⭐

The most painful part of using Claude Code is starting over and re-explaining the project and the problem to Claude again. Claude Mem solves this with persistent, cross-session memory.

Claude Mem hooks into Claude Code's session lifecycle, captures tool usage and observations, compresses them into semantic summaries using Claude's agent-sdk, and stores everything in a local SQLite database with Chroma vector search. When you start a new session, relevant context is automatically injected!

Claude Mem is one of the most starred Claude Code plugins in existence, and the community has rallied around it with extensive documentation, cloud backup options via Supabase, and a growing library of configuration presets.

7. Repomix - 27.6k⭐

Repomix is a great example of simple tools with great power. It takes an entire codebase and packs it into a single, AI-friendly file. This file can then be fed to any AI based coding tool (like Claude) or to a chat-interface.

Repomix just don't take a "cat-and-concatenate" approach, instead it does things smartly. It respects .gitignore files, handles binary gracefully, supports custom output templates, and can output in different formats. It reduces token count by 70% while preserving the semantic meanings.

Repomix is the universal translator between a codebase and any LLM. When I need to ask Claude a one-off question about a legacy repo, or when I want to use a different model for a specific task, Repomix is the fastest way to bridge the gap.

All of these seven repositories addresses frictions that developers face when working with Claude. Once you start using these tools along with your Claude assisted development, you will start to see better and faster results at lower cost.

I know there are many more tools that people use to ease up their Claude workflows, but the ones I have listed above are my favourites. If you have some of your own favorites, leave them in the comment. I am eager to check them out!

Until next time!