Convert Tampermonkey Script to Node.js

@extreamcode

Hi, You’re not just looking to “convert a script” , you need the fragile parts of a browser-dependent automation flow rebuilt into a stable backend that can survive concurrency, retries, OTP timing, token churn, and cancellation without turning into a maintenance problem later. That’s exactly the part I focus on. I’ve worked extensively with Node.js backend automation, REST APIs, async workflows, API integrations, and persistent state systems. For your rewrite, I’d replace GM_xmlhttpRequest with Axios/Undici, move local/Tampermonkey storage into JSON or SQLite-backed services, and structure the app into modules for auth, OTP, session management, captcha, concurrency control, retries, and workflow orchestration. AbortController-based cancellation, structured logging, and config-driven behavior would be built in from the start. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. I can deliver a clean Node.js backend with REST endpoints, proper project structure, README, and maintainable production-ready logic. Can you share whether the current Tampermonkey script depends on cookies, rotating headers/fingerprints, or any browser-derived session values that must be recreated exactly in Node.js? Best regards, Asad

@himanshu0818

Hi there, I can help you convert your Tampermonkey script into a clean, scalable Node.js backend. I have 10+ years of experience in backend development, and I also use AI in my workflow so I can deliver fast and cost-effective results. I will: • Refactor your script into a structured Node.js architecture • Handle OTP flow, sessions, tokens, and retries properly • Implement concurrency control and request queuing • Integrate captcha handling and automation timing • Set up secure, persistent storage • Ensure the system is stable, scalable, and production-ready I’ve worked on similar automation and backend systems and understand the importance of reliability. I can start immediately. Let's chat, Himanshu

@nikhilroyjs

Hello there, I'm keen to develop your Tampermonkey script into a production-ready Node.js backend, focusing purely on robust automation logic. I have extensive experience migrating browser-based automation (including userscripts) to scalable Node.js systems. For browser APIs like `GM_xmlhttpRequest` and `localStorage`, I'll implement `axios`/`undici` for requests and `SQLite` (or JSON) for state persistence, ensuring a clean backend architecture. Concurrency will be managed with efficient `async/await` patterns and custom queues, along with `AbortController` for precise request cancellation and retry logic. The entire system will be exposed via well-structured REST API endpoints. I'm adept at creating clean, maintainable code with proper logging and error handling. I can readily share examples of similar backend automation projects. As an individual developer, I offer dedicated availability to ensure seamless project delivery. Regards, Nikhil Chandra Roy

@santoshkumars17

As an experienced Full Stack Developer, I possess not only solid reasoning and problem-solving skills to convert the Tampermonkey script into a production-ready Node.js backend but also familiarity with automation systems and browser request flows. With 5+ years of experience under my belt, I’ve had the opportunity to create scalable solutions (just like what you’re looking for) from idea conception to deployment. To address your technical requirements, I'm proficient in Node.js and have comprehensive knowledge of REST API architecture, JSON, SQLite persistence, async/await architecture, concurrency management, error handling and retry logic. On top of that, I’ve used a variety of backend equivalents such as Axios, Undici and Fetch in Node to achieve similar functionalities before. My commitment to timely delivery and clear communication has always been appreciated by my clients. Rest assured that I will bring the same level of dedication and attention to detail to your project." Let me transform your existing code into a streamlined, maintainable backend system through skillful rewriting, clean project structure, API endpoints, config system as well as logging with productive README documentation." Let's make your automation workflow function smoothly at both ends.

@KarthikTechCon

Hi, I’m Karthik, a Node.js backend developer with 15+ years of experience, specializing in automation, asynchronous workflows, and production-ready systems. I can convert your Tampermonkey script into a clean, scalable Node.js backend with REST APIs, proper async/await handling, concurrency management, OTP flows, token/session management, retry/cancellation logic, captcha integration (2Captcha), and persistent storage (JSON/SQLite). I’ve migrated several browser-based automation scripts to backend systems, replacing GM_xmlhttpRequest with Axios/Fetch/Undici, localStorage and Tampermonkey storage with JSON/SQLite, and browser timing/state logic with Node timers and event-driven workflows. I also implement high-concurrency request managers, AbortController for cancellations, and robust retry/error handling. Deliverables include: fully rewritten backend, clean project structure, config-driven workflow, REST API endpoints, logging, error handling, and complete installation/readme. I’m based in India, available full-time, and can start immediately to deliver production-ready, maintainable automation logic without delays

@monicasynthesis

Hello, I will professionally convert your Tampermonkey automation script into a clean, production-ready Node.js backend with scalable architecture and proper API structure. With 5+ years of experience in backend development and automation systems, I specialize in building high-concurrency, request-driven services. What I will handle for you: • Full migration of script logic into Node.js backend (login, OTP, sessions, automation flow) • Concurrency handling, retry system, and request cancellation using best practices • REST API development with proper structure, logging, and persistence (JSON/SQLite) Warm regards, Monica Bhatia

@abhishek060

Hi, I can convert your Tampermonkey automation into a clean, production-grade Node.js backend with structured REST APIs, replacing browser APIs with Axios/Undici, SQLite/JSON storage, and a scalable async workflow using concurrency control, retries, and AbortController for safe request management. GM_xmlhttpRequest → Axios/Undici, localStorage → SQLite/JSON store, concurrency via worker queues + Promise pools, retries with exponential backoff, cancellation via AbortController, and full REST endpoints for each automation stage; I’ve built similar browser-to-backend automation migrations with session + token-based flows and persistent task orchestration. Lets discuss on chat. Regards Abhishek

@UzeeTech

As an experienced Full-Stack Developer, I’ve worked on numerous projects that demanded the transformation of browser-specific functionalities into their server-side equivalents. I am well-versed in the technologies needed to execute this project successfully, including advanced skills in JavaScript and Node.js with proper async/await architecture. My ability to think beyond code helps me recreate and incorporate functionalities like `GM_xmlhttpRequest`, `localStorage`, and Tampermonkey storage in your new Node.js backend structure while ensuring the code maintains its scalability for sustainable use. Implementing concurrency, retries, request cancellation (`AbortController`), and persistence in automation systems is something I've done quite several times. My career record has repeatedly proven my proficiency in creating parallel request systems and integrating captcha-solving solutions (like 2Captcha) just as your project demands. Concurrently, working with JSON or SQLite for state persistence is a skill that has been polished with experience over the years, making it a strength of mine. Furthermore, I have successfully exposed rewritten systems through REST APIs before - a crucial requirement to deliver the full functionality you need from the script.

@usamaansari786

Hi, I understand you need to convert an existing Tampermonkey automation script into a production-ready Node.js backend system with clean architecture and scalable design. I can rewrite your script into a proper Node.js backend that handles login flow, OTP verification, session/token management, high concurrency request handling, retries, cancellation logic, captcha integration, and persistent storage using JSON or SQLite. The backend will include: • Clean REST API structure • Async/await based architecture • Concurrency + request queue management • Retry and error handling system • State persistence (JSON/SQLite) • Config-based automation setup • Replacement of browser/Tampermonkey APIs with Node.js equivalents I have experience working with automation systems and backend API development, and I can restructure browser-based logic into scalable server-side architecture while keeping it maintainable and production-ready. I can also expose the full system through REST APIs so it can be easily integrated or extended in future. Looking forward to reviewing your current script and discussing the redesign direction further. Best regards, Usama K

@nitinjohnson316

Hello, I can help with this rewrite. I have 14+ years of experience building backend automation systems using Node.js, APIs, async workflows, concurrency handling, and browser automation related logic. I can work on migrating browser-based automation flows into backend services before, including: * Request/session automation * Token and OTP flows * Retry and cancellation handling * Captcha integrations * Parallel request systems * Persistent storage and queue logic For browser-specific APIs: * `GM_xmlhttpRequest` → Axios/Fetch/Undici * `localStorage` / TM storage → JSON/SQLite/Redis * Abort/cancel flow → AbortController * Timing/concurrency → async queue/workers Yes, I can expose everything through clean REST APIs with proper logging, config handling, and scalable structure. I work independently and can manage communication and timelines properly without availability issues. Looking forward to hear from you. Regards, Nitin Johnson

@souvikbasu

Hi, I'm a Node.js backend developer experienced in automation systems and API architecture — converting a Tampermonkey script into a clean, production-ready Node.js backend with proper concurrency, session management, and retry logic is exactly the kind of migration work I do. My approach: • Restructure the automation logic into a well-architected Node.js backend (Express/Fastify) with clean separation of concerns across auth, session, concurrency, and storage modules • Login + OTP flow: replicate the existing sequence cleanly with proper error handling and timeout management • Session/token handling: secure state management with refresh logic and persistent storage (Redis or your preferred DB) • High-concurrency request system: worker pools or async queues (BullMQ) to handle parallel requests reliably at scale • Retry mechanisms: exponential backoff with configurable limits and structured failure logging • Captcha integration and request cancellation logic ported cleanly from the original script One question: can you share the Tampermonkey script so I can assess scope accurately? Happy to sign an NDA if needed. Can start immediately.

@sonika1419

**DO NOT PAY ME UNTIL I COMPLETE! :)** Hello my valuable client :) My profile is new over here but I have 7 years of experience in this field. I have completely understood about your project. Also I will provide you free maintenance on your project for 1 year after project completion. I can definitely complete this in your timeframe. Give me one chance to prove myself. Hit the chat button to get started. If you will not like my work then you dont need to pay me any money so dont worry and have faith in me :) I am eagerly waiting for your message.

@chiragardeshna

Hi there, Strong alignment with this project comes from experience building backend automation systems with concurrency management, request orchestration, token/session workflows, retry handling, and scalable Node.js architectures. Clear understanding of the requirement to rewrite the Tampermonkey automation script into a production-ready Node.js backend with REST APIs, OTP workflows, captcha integration, persistence layers, request cancellation, and scalable async processing. Hands-on expertise with Node.js, Axios, AbortController, automation systems, SQLite/JSON persistence, parallel request management, retry strategies, and backend workflow engineering ensures maintainable and production-ready implementation. Risk is minimized through clean architecture planning, structured logging, concurrency testing, secure token/session handling, modular API design, and detailed documentation for deployment and long-term maintenance. Available to start immediately happy to review the existing script and discuss architecture and next steps. Recent work: https://www.freelancer.com/u/chiragardeshna Regards Chirag

@mobasherreza10

Hi there, As a professional with expertise in diverse programming languages, architectures, and frameworks including Node.js, JavaScript, and REST API, I'm well-suited to tackle your project. My experience includes the conversion of browser automation scripts into Node.js backends. I am well-versed in the intricacies involved in replacing browser-specific APIs such as `GM_xmlhttpRequest` and `localStorage` with suitable equivalents, ensuring a seamless transition. Furthermore, I can implement the required concurrency, retries, request cancellation (leveraging `AbortController` effectively), and persistence via JSON or SQLite. In concert with my automation proficiency, I hold an in-depth understanding of building scalable and maintainable backend systems using best development practices. This enables me to translate your Tampermonkey script into a production-ready Node.js backend architecture that is robust and structured optimally. My experience in managing state persistence will be paramount while transforming Tampermonkey storage to a compatible mode for potential JSON or SQLite storage.

@Mayanks010

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Mayank Sahu

@dhruvp0312

Hello, I’m an individual Node.js backend developer from India with experience in automation systems, async workflows, REST APIs, concurrency, and request orchestration. I can rewrite your Tampermonkey script into a scalable, production-ready Node.js backend with clean architecture and proper error handling. My approach: • `GM_xmlhttpRequest` → Axios/Undici/Fetch • `localStorage/TM storage` → SQLite or JSON persistence • Browser timers/state → backend workflow managers • Abort/cancel flow → `AbortController` Features I can implement: ✔ Login + OTP flow ✔ Session/token handling ✔ Parallel request execution ✔ Retry + cancellation logic ✔ 2Captcha integration ✔ REST API endpoints ✔ Config-based setup ✔ Persistent workflow state ✔ Structured logging For concurrency, I’ll use async queues/promise pools with controlled parallel execution and retry strategies using exponential backoff. Deliverables: • Clean Node.js backend • Production-ready folder structure • REST APIs • Config system • README/setup guide • Proper logging & error handling I can work independently, provide regular updates, and start immediately after reviewing the existing script. Looking forward to discussing the workflow further.

@jagratip3

Hello, I can convert your Tampermonkey automation script into a clean, production-ready Node.js backend system with proper architecture, scalability, and maintainability. 1) Experience Yes, I have worked on migrating browser/Tampermonkey automation logic into Node.js backend systems, including request automation, session handling, and concurrency-based workflows. 2) Browser APIs → Node.js replacement • GM_xmlhttpRequest → Axios / Fetch / Undici • localStorage / Tampermonkey storage → JSON/SQLite persistence layer • Browser timing/state → Node async queues + event-driven logic • Abort/cancel flow → AbortController in request wrapper 3) Architecture approach I would build a modular backend with: • Auth service (login + OTP flow) • Session/token manager • Request engine with concurrency control (Promise pool / queue system) • Retry system (exponential backoff) • Cancellation using AbortController • Persistence layer (JSON or SQLite) • Config-driven setup for flexibility 4) REST API Yes, I will expose full REST APIs (Express/Fastify), e.g. login, OTP verify, run tasks, status, cancel, etc. 5) Similar work I’ve built automation backends involving high-concurrency request systems, API workflows, session-based authentication, and browser-to-backend migration projects. I can start immediately and work as an individual developer with consistent availability.

@fizaa170

Hi, this isn’t a simple script conversion — it’s a backend architecture rewrite, and that distinction matters. I understand the goal is replacing browser-dependent Tampermonkey behavior with a scalable Node.js service handling OTP flows, token/session lifecycle, concurrency, retries, persistence, and automation workflows in a production-ready structure. For your questions: browser APIs like GM_xmlhttpRequest can be replaced with Axios/Undici, localStorage and TM storage move to JSON/SQLite persistence layers, concurrency can be handled through async queues/workers with AbortController for request cancellation and retry policies, and yes — the entire workflow can be exposed cleanly through REST APIs. A few quick questions: Does the current script rely on cookies only or JWT/session tokens too? Is captcha solving exclusively via 2Captcha or are multiple providers needed? And approximately how many parallel requests/workers should the system sustain?

@alluankit01

Hi, I can convert a Tampermonkey or browser-based automation script into a clean Node.js backend only for authorized systems, internal tools, or platforms where you have permission to automate. I have experience with Node.js, REST APIs, async/await architecture, Axios/Undici, SQLite/JSON persistence, config systems, token/session handling, retry logic, AbortController cancellation, logging, and replacing browser-specific APIs such as GM_xmlhttpRequest with server-side HTTP clients, localStorage/Tampermonkey storage with SQLite or JSON storage, and browser timers with backend job queues or schedulers. My approach would be to first audit the existing script, separate allowed business logic from browser/UI logic, then rebuild it into services, controllers, config files, persistence layer, and REST endpoints. I can also add proper error handling, request cancellation, concurrency controls, and README setup instructions. Important: I cannot help build systems intended to bypass CAPTCHA, abuse OTP flows, overload appointment systems, or automate unauthorized third-party bookings. If this is for your own authorized platform or internal workflow, I can build it properly. Best regards Ankit