EfrainGaray (Efrain Garay ) · GitHub
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EfrainGaray/README.md

Typing SVG


Followers Repos Since Profile views


🔬 Research Projects  2025–2026

Production-grade stealth browser relay that defeats Cloudflare, DataDome, and PerimeterX at the TLS layer. Uses Chrome's own BoringSSL (via Rust native addon) to produce a JA4 fingerprint identical to real Chrome. Decomposed into 5 focused microservices with ISolver CAPTCHA strategy pattern, Redis distributed rate limiting, EventEmitter-based proxy health monitoring, and Docker remote Chrome support.

Architecture (Phase 11 — hardened):

  • 5-service decomposition: BlockDetector · ProxyController · PageActionExecutor · CaptchaOrchestrator · ChromeSessionManager
  • ISolver Strategy pattern: pluggable CAPTCHA solvers (reCAPTCHA, Turnstile, DataDome, PerimeterX)
  • Redis distributed rate limiter with per-endpoint granularity (scrape: 10/min, session: 30/min)
  • EventEmitter on HealthTracker/ProxyPool (degraded/recovered/banned/exhausted events)
  • Interface segregation: SessionRef · ProfileRef · ProxyRef
  • Timing-safe auth, SSRF protection, WebSocket CDP auth

Key results:

  • ✅ JA4: t13d1514h2_8daaf6152771_827b515c4f52 — verified live vs Chrome 124
  • ✅ HTTP/2 SETTINGS exact Chrome values (headerTableSize=65536, windowSize=6291456)
  • ✅ 13 JS stealth patches via single CDP IIFE — navigator.webdriver → undefined
  • ✅ Profile aging: direct SQLite writes to Chrome History (6-month fake personas)
  • ✅ bot.sannysoft.com stealth score: 31/31 (100%)
  • ✅ 732 tests (25 integration, 57 service, 8 error-path) · TypeScript strict · MIT

TypeScript Rust Node.js Redis MCP Docker

Binary data transport via YouTube VP9 4K. Encodes arbitrary files into grayscale video frames (1 bit/pixel), uploads to YouTube, and recovers with SHA256-verified fidelity using BCH(t=16) error correction.

Key results:

  • ✅ 300 MB recovered — SHA256 verified
  • ✅ 30 fps & 60 fps validated end-to-end
  • ✅ BER = 0 stealth channel (C16 mode)
  • ✅ Academic paper published

Python FFmpeg YouTube API

Adaptive lossless compressor with per-block codec selection. Outperforms bzip2 across standard benchmarks with 3× faster decompression.

Corpus NEXCOMP bzip2
Calgary 2.072 bpb 2.109 bpb
Canterbury 1.278 bpb 1.545 bpb
Silesia 2.022 bpb 2.057 bpb

Decompression: ~50 MB/s vs bzip2 ~17 MB/s

Rust


📦 Notable Open Source

Pure RAG-as-a-service — no LLM, no opinions. Any AI (Claude, GPT-4, Llama, custom agents) queries ragcore to get grounded context from your documents via MCP or the OpenAI-compatible API. Pluggable embedding and reranker backends.

Key features:

  • MCP server (SSE) + OpenAI-compatible REST API — integrates with Claude Code, Cursor, LangChain, any SDK
  • Swappable embedders: local sentence-transformers or any /v1/embeddings endpoint (HuggingFace, NVIDIA NIM, OpenAI, Ollama…)
  • Swappable rerankers: local CrossEncoder or remote /v1/rerank (Cohere, Jina AI, Voyage AI)
  • LRU cache (300s TTL) · rate limiting (60 req/min) · namespaces · observability headers
  • 75 tests, zero ML downloads required — runs in ~2.5s

Python FastAPI MCP ChromaDB Docker

FastAPI multi-model RAG server with LangChain, vector store, and multi-backend AI generation. Supports swappable LLM backends and retrieval-augmented pipelines.

Python FastAPI LangChain Docker

NestJS module for AWS SQS — producer/consumer pattern, auto-ack, DLQ support. Production-tested since 2021.

TypeScript NestJS AWS SQS


🛠 Tech Stack

Skills


📊 GitHub Stats

stats   langs

GitHub Streak


📈 Activity

Activity Graph


Founder · Hegga  ·  Research · Agatha

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  1. nestjs-aws-sqs-npm nestjs-aws-sqs-npm Public

    NestJS module for AWS SQS — producer/consumer pattern, auto-ack, DLQ support. Production-tested.

    TypeScript 1 1

  2. 2captcha-python 2captcha-python Public

    Forked from 2captcha/2captcha-python

    Python 3 package for easy integration with the API of 2captcha captcha solving service to bypass recaptcha, hcaptcha, funcaptcha, geetest and solve any other captchas.

    Python

  3. angular-universal-landing angular-universal-landing Public

    HTML

  4. nestjs-npm-starter-npm nestjs-npm-starter-npm Public

    TypeScript

  5. aui aui Public

    Forked from helmuthdu/aui

    Archlinux Ultimate Install

    Shell

  6. epayco-php epayco-php Public

    Forked from epayco/epayco-php

    PHP wrapper for Epayco API

    PHP