Your AI sidekick on every browser tab

Your AI sidekick,
anytime, anywhere.

Highlight, ask, translate, summarize, and do so much more — right where you are on the web.

Works on every website. No sign-up required. Free forever with your own API key.

Add to Chrome — It’s Free
No credit card Setup in 30 seconds Works on all sites
👩👨🧑👩‍💻
★★★★★
👇 a real demo of Mr Oye — click him
Mr Oye mascot
Works with the best AI models
GPT-4o Claude 3.5 Gemini 1.5 Gemini Nano Llama 3 + Local Ollama & more
NOW LIVE ON CHROME WEB STORE

Install Mr Oye on Chrome — one click.

Auto-updates, signed by Google, free forever. Or drop your email for product updates — no newsletter spam.

Add to Chrome → or

Everything you need, baked in.

Powerful AI tools to help you learn, work, and create — on any website.

Explore all features →
✨

Explain Anything

Get clear explanations of any topic, concept, or text.

🌐

Translate Instantly

Translate text into 30+ languages with native accuracy.

📝

Summarize Content

Turn long articles, documents, or videos into short summaries.

💬

Ask Anything

Ask questions and get accurate, helpful answers instantly.

✏️

Rewrite & Improve

Rewrite, proofread, and improve your content instantly.

🎙️

Voice & Listen

Voice your answers or speak your questions hands-free.

🧠

Smart Context

Understands the content on the page and gives relevant answers.

🖱️

Right-click Menu

Access all actions from the context menu on any page.

🛡️

Privacy First

100% private. Your data never leaves your device.

🧩

1,700+ AI Skills

Discover 1,700+ ready-to-use AI skills for any task.

🌙

Dark Mode

Full dark theme across every panel. Follows your system or toggle manually.

🏢

Corporate Safe Mode

IT-managed policy locks sensitive toggles — deploy-ready for workplace use.

New

🤖 AI Assistants

11 specialist AI brains. Activate one click. Works with your AI model — no extra cost.

Browse all assistants →
🎯
SalesCoach
Cold outreach writer
 ⚖️
LegalReader
Contracts in plain English
 🧑‍💻
DevBuddy
GitHub errors → exact fixes
 💼
HireCoach
Tailor CVs to job descriptions
 🛒
ShopSmart Free
Buy / Skip verdict
 📈
SEOScout
SEO gaps + keyword fixes
⭐ Power Tier — All 11 assistants + Custom Builder
Build your own assistant or import any OpenAI Custom GPT · $49 one-time · works with your AI model
See all assistants →

Use Mr Oye in Claude Code & Cursor — for free.

Mr Oye exposes its public skill catalog as an MCP server. Any MCP-compatible AI tool can call any skill in 30 seconds, no install. Free anonymous tier, Pro tier raises limits.

{
  "mcpServers": {
    "mroye": { "url": "https://api.mroye.com/mcp" }
  }
}

Paste that into ~/.claude/config.json, Cursor settings, Cline, Continue.dev, Zed AI, or Claude Desktop.

Setup guides for every client →

Learn prompt engineering, hands-on.

Seven techniques used by every AI feature inside Mr Oye. Steal them for your own prompts — in Mr Oye, in ChatGPT, in your code, anywhere.

1 Be specific about the OUTPUT, not the topic

Most AI failures are vagueness failures. Tell the model exactly what shape the answer should take.

Tell me about photosynthesis.
Explain photosynthesis to a 10-year-old in 4 short bullets, no jargon, end with a one-sentence quiz question.
Why: Models default to "average internet answer" when prompts are vague. Constraining length, audience, format, and tone removes the guess.

2 Show 2–3 examples (few-shot)

If you can't describe it, demonstrate it. Examples teach format better than instructions.

Convert these to a friendly tone.
Convert each line to a friendly tone, keeping meaning identical. Input: Your invoice is overdue. Output: Just a friendly nudge — your invoice slipped past its due date 🙂 Input: Submit the form by Friday. Output: ...
Why: Models pattern-match. Two well-chosen examples replace ten paragraphs of instructions. Mr Oye's "Translate" + "Email rewrite" features both use 1–3 examples internally.

3 Assign a role to set the bar

"Senior X" or "Picky Y" pulls higher-quality answers than the default neutral voice.

Review my code.
You are a senior backend engineer at a payments company who's been burned by silent failures. Review the code below for: race conditions, error swallowing, retry logic. Be brief; cite line numbers.
Why: The role primes the model toward a specific reviewer's instincts. "Senior" filters out generic advice. The "burned by X" detail biases toward the failure modes you actually care about.

4 Give the model permission to refuse / ask back

Models hallucinate to avoid saying "I don't know". Tell them they're allowed to.

What's the population of Buzdy?
If the answer isn't reliably in your training data, say "I don't know" or ask me a clarifying question. What's the population of Buzdy?
Why: Without an explicit out, models confabulate. Adding "say 'I don't know' is a valid answer" alone reduces hallucinations dramatically.

5 Ask the model to think before answering (chain-of-thought)

For multi-step problems, "let's think step by step" or a structured reasoning template moves accuracy from 60% → 90%.

A train leaves at 9 going 60mph and another at 10 going 80mph. When do they meet?
Solve step by step: 1. First, list what's known. 2. Set up the equation. 3. Show your arithmetic. 4. Final answer in one line. A train leaves at 9 going 60mph...
Why: Models that "show their work" make fewer logic errors. The structure forces them to commit to intermediate steps. Use this for math, planning, debugging, anything multi-stage.

6 Constrain the output format (JSON / table / bullets)

If you'll consume the answer programmatically — or just want it scannable — name the format upfront.

Compare React, Vue, and Svelte for a startup.
Compare React, Vue, and Svelte for a 5-person startup. Output a markdown table with columns: framework, learning curve (1–5), hiring pool, bundle size, best-for. Then 2 sentences on which I should pick.
Why: The model spends fewer tokens on prose and more on the actual decision dimensions. JSON-mode in particular: "Respond with valid JSON: { recommendation: string, reason: string, alternatives: [...] }" forces structured outputs.

7 Iterate — don't accept the first answer as final

A bad first answer isn't a failure of AI; it's data about your prompt. Add what was missing, run again.

[reads first answer] "Eh, not great." [closes tab]
[reads first answer] "Too generic — it didn't use my domain. Let me add: 'You're optimizing for B2B SaaS sales teams of 5–20 reps.' and re-run."
Why: Top prompt engineers iterate 5–10× per task. Mr Oye's Conversation log keeps your last 50 Q&A so you can compare phrasings side-by-side and learn which framings get sharper outputs for your domain.

Practice in Mr Oye: install the extension, select any text on any webpage, and try each technique above. The selection floater + Run-with-Mr-Oye menu give you instant AI feedback on whatever phrasing you try. Every successful prompt you craft can be saved as a personal Snippet (free tier 10, Pro ∞), or submitted to the public Skill Store so other users can learn from your prompt.

1,700+ ready-to-run AI skills.

Curated prompt templates for work, study, code, and creativity. One click to run with your preferred AI.

Browse all skills →
Career30-Day PM CourseDaily prompts to learn PM end-to-end.Open › BusinessAccounting Site CopyLanding copy for accounting firms.Open › ProductivityADHD Accountability BuddyA patient coach that keeps you on track.Open › MarketingAffiliate Marketing PlaybookStep-by-step launch plan.Open › CreatorSpotify Success PlaybookGrow streams without buying ads.Open › WritingAfrican Folk Tale GeneratorMythic stories with cultural depth.Open ›

Build with Mr Oye — Docs & Changelog

MCP server for Claude Code, Cursor, Continue, Zed. API reference + integration guides.

Open docs

How Mr Oye works.

AI help in 3 simple steps.

1
🖱️

Highlight or Select

Select any text on a webpage, right-click, or just click the Mr Oye mascot.

2
⚡

Choose an Action

Pick from Explain, Translate, Summarize, Ask, Rewrite — or run any of 1,700+ AI skills.

3
✅

Get Instant Results

Accurate answers appear right there on the page. Copy, share, or keep chatting.

Simple pricing. Start free, upgrade anytime.

Use the entire extension free with your own AI key, plus Chrome's built-in Gemini Nano (~free, offline). Pay once for perks, or subscribe for our hosted AI.

Free Try it today
$0 forever
  • Bring your own API key
  • Voice, summarize, translate — all of it
  • No card, no signup
Install free
Lifetime Best for tinkerers
$5 one-time · lifetime
  • Pay once. Yours forever.
  • Outfits, snippets, breach checker, bigger quotas
  • Works on 5 of your devices
Get lifetime
Founder Annual Best value · Save 78%
$49 / year · <$5/mo
  • Everything in Lifetime, plus keyless AI
  • HD Chirp3 voice — no API key needed
  • 2,000 questions a month, cancel anytime
Get Founder
Pro AI Monthly
$19 / month · cancel anytime
  • Same keyless AI & HD voice as Founder
  • Month-to-month flexibility
  • $228/yr vs $49 on Annual
Start monthly

Loved by thousands of users.

See what people are saying about Mr Oye.

★★★★★
"Mr Oye is an absolute game-changer! I use it every day for work and study. The summarize feature alone saves me hours every week."
👨‍🎓
Aarav Sharma
Student
★★★★★
"Saves me hours every week. The summarizer and explainer features are extremely accurate. Finally an AI tool that fits my workflow."
👩‍💼
Priya Verma
Product Manager
★★★★★
"Finally, an AI tool that actually works seamlessly on every website. The right-click menu is genius — no more switching tabs to get answers."
👨‍💻
Rahul N.
Developer

Install in 30 seconds.

One-click install from the Chrome Web Store, or sideload the .zip if you're on Edge, Brave, Arc, or Vivaldi.

Chrome Web Store ✓ Live now

One click. Auto-updates. Works in Chrome & Edge (Chromium).

  • One-click install — no developer mode
  • Auto-updates whenever we ship a fix
  • Verified & signed by Google
Add to Chrome — Free →

Or install on Microsoft Edge via the same listing.

Sideload .zip Edge · Brave · Arc · Vivaldi

  1. Download mr-oye-latest.zip & unzip.
  2. Open chrome://extensions
  3. Toggle Developer mode on (top right).
  4. Click Load unpacked & select the unzipped folder.
⬇ Download .zip (latest)

Common questions.

Everything people ask before installing.

View all FAQ →
How does activation work after I buy Pro?

Stripe redirects you to mroye.com/thanks.html. Our server issues a unique unlock code there (looks like MROYE.xxxx.yyyy). Copy it, open Mr Oye, click ⋮ → Premium → paste code → Activate. The mascot's collar turns gold and Pro features unlock.

What if I lose my code or switch computers?

Your code is yours forever. Re-paste it on any new install — the same code works on unlimited devices. Lost it? Email hello@mroye.com with your Stripe receipt and we'll re-issue.

Is it really one-time? No subscription?

The $5 Lifetime tier is a one-time charge — buy once, use forever, no recurring billing. The $19/mo Pro AI tier IS a Stripe subscription (so we can pay for the OpenAI and Google TTS calls on your behalf). You can cancel any time inside the extension via ⋮ → 💎 Premium → "Manage subscription / cancel" — opens Stripe's hosted billing portal, no email required. If you don't need keyless AI, just pick the $5 Lifetime.

What data do you collect?

Only what you'd expect: if you buy Pro, we store your email and Stripe session ID so we can re-issue your code. License-verify pings happen once per 24h to detect leaked codes. That's it. Browsing history, AI prompts, clipboard contents — all stay on your device. Full privacy policy →

How do new skills get added?

Mr Oye fetches a signed catalog from api.mroye.com/skills.json once every 24h. Author drops a new SKILL.md in the catalog source, signs it with our Ed25519 key, ships — every Mr Oye user globally picks it up the next day. The catalog signature is verified on-device before any skill loads.

Free vs Pro — what's the difference?

Free ($0) — full extension. AI runs via Chrome's built-in Gemini Nano (local, no key), local Whisper/Kokoro, or your own BYOK key (Anthropic/OpenAI/Gemini/GitHub free-tier).

Mr Oye Pro ($5 lifetime) — adds breach checker, privacy grade, mood card, browser-wrapped, outfit store, scheduled skill runs, bigger quotas. For AI you still BYOK or use Chrome's Gemini Nano. Buy once.

Mr Oye Pro AI ($19/mo, cancel anytime) — adds keyless AI: our OpenAI key (gpt-4o-mini) runs server-side, plus Google Chirp3-HD voice. 2,000 questions/month. Everything in Pro Lifetime included. Cancel inside the extension via Stripe billing portal.

Is Mr Oye really free?

Yes. Mr Oye is free forever if you bring your own API key (Anthropic, OpenAI, Gemini, or GitHub free tier) or use Chrome's built-in Gemini Nano. No credit card required to get started. Paid tiers add keyless AI and extra features.

Which AI models can I use?

Mr Oye supports GPT-4o / GPT-4o-mini (OpenAI), Claude 3.5 Sonnet (Anthropic), Gemini 1.5 Flash (Google), GitHub Models free tier, Chrome's built-in Gemini Nano (offline, free), and local Ollama models. You bring your own key, or use our hosted model on the Pro AI plan.

Start using AI on every website today.

Install in 30 seconds. Free forever with your own API key.

Add to Chrome — It’s Free
No credit card required No signup required 100% free to start