100% Free Forever PulseX is open-source under MIT. Free to use, free to distribute, and free to sell.
Manifest V3 • Universal BYOK for X
โš–๏ธ MIT Licensed • Free to Distribute & Sell
... Downloads

High-Signal Replies on X.
Zero AI Slop. Zero Em-Dashes.

The open-source, client-side writing partner for X (Twitter). Connect directly to DeepSeek, OpenAI, Claude, Gemini, Groq, or local Ollama with your own keys. 100% Free forever • No monthly SaaS paywalls • No middleman servers.

โšก 100% Client-Side Privacy ๐Ÿ›ก๏ธ Timeline Noise Shield ๐Ÿ‘จโ€๐Ÿ’ป Built by Finn (@finnbuilt)
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100% Free Forever

No subscriptions, no trials, and no "Pro" tier limits. Never pay $20-$40/month for an AI wrapper again.

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Free to Distribute

Share PulseX with your team, audience, or organization freely. Bundle it, package it, and deploy it anywhere.

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Free to Commercialize & Sell

Licensed under the permissive MIT License. You have complete legal freedom to fork, modify, white-label, or sell.

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Zero API Markup

Connect directly from your browser to DeepSeek, OpenAI, Claude, or local Ollama. Zero middleman markup.

The Anti-Slop Difference

Everyone on X can spot lazy AI generated replies in half a second. PulseX was engineered specifically to sound like a sharp, authentic peer.

โŒ Generic AI Wrapper (Slop) Instant Mute

"Indeed, Alex! โ€” In today's fast-paced digital landscape, consistency is truly the cornerstone of sustained startup growth. Delve into customer feedback and keep grinding! #founder #scale"

โ€ข Robotic em-dash (โ€”) dead giveaway โ€ข Artificial author name repetition ("Indeed, Alex!") โ€ข Banned buzzwords ("in today's landscape", "delve into") โ€ข Generic motivational corporate noise
โœ… PulseX (Human Peer Cadence) High Engagement

"facts. paid ads before PMF is just paying to churn users faster. fix the product loop first and let word of mouth do the heavy lifting."

โ€ข Strict zero em-dash ban across prompt & parser โ€ข Jumps straight into the thought (no artificial name greeting) โ€ข Natural internet syntax, lowercase openers, and contractions โ€ข Grounded, high-signal conversational substance
PULSEX

Experience PulseX in Action

Experience the exact Chrome extension interface. Select any angle or model to generate authentic replies in real time.

CHROME
EXTENSION

Seamlessly activate context-aware replies, eliminate timeline noise, and write with zero em-dashes. Start generating authentic peer cadence directly inside X!

PulseX
by @finnbuilt
SaaS Founder
20.5k followers • @techfounder
Strategic Angles
5/5 โšก Active
Thread context
๐Ÿ’ก Insight
Zero Em-Dash Cadence • 100% Peer Substance
Grounded in the author's tweet about acquisition and retention loops.
100%. Ads amplify whatever you already have. If you have zero organic retention, you're literally paying to churn users faster.
โšก 18w • 112/280 chars • 180ms latency
R1 Reasoner โšก
Cycle Angle +

Unlock high-signal replies on X when you activate PulseX.

//
Select Angle:
Model:

Get PulseX Free Forever

100% Free and open-source under MIT. Choose your preferred package format below • zero signups, zero email barriers, instant 1-click download.

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Open Source

GitHub Source Code

main branch • Full Repo (.zip)

Complete source code repository including 59 automated unit tests, build scripts, icon generators, and ContextZen methodology context files.

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Git CLI

Developer Git Clone

Terminal CLI • Instant Clone

Clone the repository directly into your local machine for rapid hacking, custom prompt modifications, or local LLM testing.

git clone https://github.com/finnbuilt/pulsex.git
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Web Store

Chrome Web Store

Official Store Listing • In Review

1-click installation from the Google Web Store with automatic background updates. Submission package generated and currently under reviewer review.

Install in 60 Seconds

No command line needed. PulseX runs in any Chromium-based browser (Chrome, Brave, Edge, Opera, Arc).

01

Download & Unpack

Download pulsex-cws.zip using the button above and extract the zip archive into a folder on your computer.

02

Open Extension Manager

In Chrome or Brave, open chrome://extensions in your address bar (or edge://extensions in Microsoft Edge).

03

Enable Developer Mode

Turn ON the "Developer mode" toggle switch in the top-right corner of the Extensions page.

04

Load Unpacked

Click the "Load unpacked" button in the top-left toolbar and select your extracted extension folder. PulseX is installed!

How to Use PulseX on X

Designed to be invisible until you need it, and lightning fast when you do. Here is a tour of the core interfaces.

Core Interface • In-Timeline

1. Two-State Click-to-Expand Reply Bar

You see a sleek โšก Reply with PulseX button first. Click it to smoothly unfold the full interface with 5 strategic angles and raw thought synthesis. Zero visual clutter when reading, instant AI leverage when replying.

๐Ÿ’ก Raw Thoughts Input: Type a few shorthand notes into the raw thoughts box (e.g. "ads suck before pmf, fix loop first") and PulseX will expand your exact point into an authentic, human reply.
Power Tool • Copilot Drawer

2. Floating AI Copilot Drawer

Look for the emerald pulse button floating at the bottom right of your screen. Drag it anywhere along the screen edge, or click to slide out the 400px frosted obsidian glass drawer.

โšก Multi-Turn Chat: Chat back and forth with the AI about the tweet, brainstorm counterpoints, generate viral Quote Tweets, or refine tone with "Shorter" or "Punchier".
Feed Shield • Noise Filter

3. Timeline Noise & Ad Filter

PulseX scans your X timeline in the background. It identifies sponsored/promoted tweets and repetitive giveaway bot spam across multiple languages, dimming them automatically.

๐Ÿ›ก๏ธ Zero Clutter: Keep your attention focused on high-signal creators. You can check your blocked clutter counter anytime in the extension popup.
BYOK Engine • Multi-Provider

4. Universal Model Switcher

Click the PulseX extension icon in your browser toolbar to choose your AI model. Supports DeepSeek (V3/R1), Claude 3.5 Sonnet, GPT-4o, Gemini 2.0 Flash, Groq, and Local Ollama.

๐Ÿ’ธ Zero Cost Hack: Connect Google Gemini (free API tier from Google AI Studio) or run Ollama on localhost for 100% free, unlimited, zero-cost replies!

Use Any AI Model You Love

PulseX is completely model-agnostic. Save individual API keys for each provider and switch between them anytime.

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DeepSeek
V3 & R1 Reasoner
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OpenAI
GPT-4o & o3-mini
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Claude
Sonnet 3.5 & Haiku
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Gemini
2.0 Flash & 1.5 Pro
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Groq
Llama 3.3 70B (500 t/s)
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OpenRouter
200+ Global Models
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Local Ollama
100% Free & Private

Superpowers Without Bloat

Everything you need to write thoughtful replies, filter timeline distractions, and grow.

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Strict Zero Em-Dash Ban

Em-dashes (โ€”) and robotic name repetition scream "AI slop". PulseX eliminates them across prompt rules and post-processing filters.

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5 Strategic Angles

Insight, Agree & Expand, Counter Angle, Witty, or Question. Type quick shorthand thoughts and let PulseX craft the prose.

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Timeline Noise & Ad Filter

Dims sponsored / promoted tweets and repetitive crypto bot spam automatically so your feed stays high-signal.

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Obsidian Glass Copilot Drawer

Draggable floating drawer for multi-turn thread exploration, draft variations, tone rewrites, and viral quote-tweets.

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100% Client-Side Privacy

Your keys and tweet data stay strictly in chrome.storage.local. Zero tracking scripts, zero logging, zero proxy servers.

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Single-Insertion Guard

Engineered specifically for Twitter's Draft.js and Lexical DOM editor with deduplication so text never pastes twice.

F

Built by Finn (@finnbuilt)

Creator building open-source, high-signal tools for founders and operators on X.

Follow @finnbuilt on X โ†— Star on GitHub โญ๏ธ

Common Questions

Is PulseX truly 100% free forever? +
Yes. PulseX has zero subscriptions, zero paywalls, and zero upsells. It is open-source under the MIT License, which gives you complete freedom to use it, distribute it, fork it, and even commercially sell distributions.
Can I use PulseX without paying any API costs? +
Yes! You can connect PulseX to Google Gemini's free tier via Google AI Studio, or run a local model like Llama 3.2 via Ollama on your computer for completely free, unlimited, private replies.
How does PulseX protect my privacy? +
PulseX operates under a strict BYOK (Bring Your Own Key) architecture. We run zero backend servers and zero telemetry scripts. When you generate a reply, the request goes directly from your browser to your selected AI provider's official endpoint over HTTPS.
Does PulseX ever auto-post or schedule tweets? +
Never. PulseX strictly complies with X's Developer Terms. It acts strictly as a composition assistant โ€” you choose when to generate, you review the text, and you click "Reply" yourself.
Why are em-dashes (โ€”) strictly banned? +
The em-dash paired with repetitive author greetings is the signature hallmark of lazy LLM slop. Real humans tweet in short, punchy sentence fragments with conversational syntax. PulseX enforces this cadence at the prompt and parser level.