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⚡ Sentria - Built with Bolt.new

Inspiration

We’ve all pasted a password or API key (or any other sensitive information) into Slack, Email, or Messages, and felt that instant “yikes” moment, because once it’s there, it lives in backups, logs, screenshots, bot indexes, and search logs forever, even if we don't know it. Sentria eliminates that with one-time, self-destructing links to completely secure text / files.

What It Does

• 🔐 One-time links — Each secret or file can be opened only a limited number of times
  
• ⏳ Auto-expiry — Pick a lifetime (minutes to days); secrets erase themselves after the timer hits zero
  
• 🔑 Optional passphrase — Add a password without storing accounts or sessions
  
• 📊 Live stats — Global dashboard tracks Total, Active, Accessed, and Deleted secrets

No login, no signup, no leftovers, just temporary, encrypted sharing that evaporates on cue.

How I Built It

I built Sentria solo in under a week:

• Bolt.new handled all UI, routing, and state with drag-and-drop blocks, so design iterations were instant. Took me just 10 minutes to start with a great UI template and the design was on par with those that large companies take weeks to build.
• Netlify hosts the static React bundle behind a custom domain, and serving deep links for auto-filling the View Secrets form through the URL with a single _redirects rule.
  
• AWS services do the heavylifting—DynamoDB TTL to store records and streams to delete expired/exhausted secrets, S3 stores files with presigned URL uploads and lifecycle rules purge files, and a few Lambda serverless functions keep everything running.

Challenges & Lessons

🛠️ Built With

Paste. Share. Forget.
Sentria lets secrets vanish on your schedule, designed, built, and shipped single-handedly with Bolt.new + Netlify + AWS.

Serverless Architecture

 ┌────────────── Client ──────────────┐
 │  React + Tailwind (static Netlify) │
 └───────────────┬────────────────────┘
                 │ 1. POST /secrets
                 ▼
 ┌────── Amazon API Gateway ──────┐
 │  CORS + Routing (HTTP API)     │
 └────────┬───────────┬───────────┘
          │           │
          │2a. create │2b. get
          ▼           ▼
  ┌─────── Lambda ────────┐   ┌────── Lambda ───────┐
  │  createSecret()       │   │   getSecret()       │
  └───────┬───────┬───────┘   └────────┬────────────┘
          │3a. put│3b. log            4a. read
          ▼       ▼                    ▼
   ┌─ DynamoDB ──┐ 5. PUT presign ┌─ DynamoDB ─┐
   │ Secrets tbl │───────────────▶│ Secrets tbl │
   │  (TTL)      │                │            │
   └─────────────┘                └────┬───────┘
                                       │4b. presign GET
                 ┌─────────────────────▼─────────────────┐
                 │        Amazon S3 (files bucket)       │
                 └───────────────────────────────────────┘
                                       ▲
                                       │6. REMOVE (TTL)
                                   ┌───┴──────────┐
                                   │ DynamoDB     │
                                   │   Stream     │
                                   └───┬──────────┘
                                       │7. event
                                   ┌───▼──────────┐
                                   │ Lambda       │
                                   │ metricsListener() │
                                   └───┬──────────┘
                                       │8. update
                                   ┌───▼──────────┐
                                   │ DynamoDB     │
                                   │ SecretMetrics│
                                   └──────────────┘

Built With

• amazon-dynamodb
• amazon-web-services
• aws-lambda
• bcryptjs
• bolt
• netlify
• s3