🧠 Inspiration
We’ve all sent messages we immediately regretted — an overly blunt email to a boss, a passive-aggressive text to a friend, or a painfully awkward DM on a dating app. Most people don’t need grammar correction — they need tone correction.
That’s where Oops.ai was born — a tool to help people rewrite cringey, confusing, or cold messages into something smart, funny, or emotionally intelligent. The goal? Save relationships, salvage job offers, and avoid digital embarrassment — with a smile.
💬 What It Does
Oops.ai takes any message you paste — text, email, DM, tweet — and instantly rewrites it based on your chosen tone:
🤝 Polite & Professional
😂 Funny & Self-aware
🧠 Smart & Witty
🫣 Soft Apology
😎 Confident & Cool
It also generates an optional follow-up message in case you’ve already sent the awkward one and need to “recover.”
Whether you're messaging your manager, a potential date, or your ex, Oops.ai helps you sound more human — and a lot less cringey.
🔧 How We Built It
Frontend: Built with Bolt.new, leveraging its no-code UI builder for fast prototyping and custom UX
AI Engine: We integrated Mistral Small 3.2 24B via OpenRouter API to handle tone-aware rewriting and response generation
API Integration: A simple backend endpoint handles user input and tone type, calls the OpenRouter API, and returns structured responses
UX Design: Multiple tone modes, copy-to-clipboard features, and real-time results in a single clean interface
Deployment: Hosted via Netlify and tagged with “Built with Bolt.new”
🚧 Challenges We Ran Into
Tone control is nuanced: Getting AI to balance humor, professionalism, and empathy required several rounds of prompt tuning and user testing.
API latency and formatting: Integrating Mistral smoothly into the Bolt.new environment with consistent output structure (rewritten + follow-up) took some backend wrangling.
Making it fun without being gimmicky: We wanted the experience to feel lighthearted, but still valuable and useful — especially in professional use cases.
🏆 Accomplishments That We're Proud Of
Built a fully working, production-ready app that genuinely solves a daily human problem
Created a tone-smart rewriting system that feels more like a friend than a robot
Successfully integrated external LLM (Mistral) with Bolt.new for a seamless UX
Tested across real use cases (job emails, DMs, awkward apologies) and got great reactions
📚 What We Learned
Tone and emotional nuance are just as important as correctness in communication tools
Even small UX decisions (e.g., emoji on tone buttons) massively influence how fun and usable the app feels
Bolt.new is incredibly fast for prototyping, but pairing it with custom AI pipelines unlocks serious power
Prompt engineering is an art — and the key to AI usefulness
🚀 What’s Next for Oops.ai
Chrome Extension: Highlight any message in Gmail, LinkedIn, Twitter → click “Oops” to rewrite in context
Voice Playback: Use ElevenLabs to speak the rewritten messages in different voices (e.g., “sarcastic coworker,” “chill friend”)
Custom Modes: Add specific use-case packs like “First Message Magic” (for dating) or “Passive-Aggressive to Friendly”
User Accounts: Add history, favorite tones, and custom personas via Supabase
Go Viral: Launch on Reddit and Product Hunt with a meme-driven campaign
Monetize: Offer a Pro version with unlimited rewrites, advanced tone control, and team collaboration features
Built With
- bolt.new
- mistral
- next.js

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