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Feature Implementation Status

Last Updated: October 30, 2025 Current Version: v1.1.0

Overview

This document tracks which recommended investment features are already implemented vs need to be built in the CS2 Float Checker API.

✅ ALREADY IMPLEMENTED FEATURES

1. Price History & Trends ✅ COMPLETE

Status: 100% Implemented Endpoint: GET /api/price-history/:marketHashName?timeframe=30

Features Available:

  • ✅ 7/14/30 day price charts
  • ✅ Historical price data from multiple marketplaces
  • ✅ Price points with date/quantity

What's Missing:

  • ❌ All-time high/low tracking
  • ❌ Average price calculation
  • ❌ Volatility indicator
  • ❌ Moving averages

2. Multi-Market Pricing ✅ COMPLETE

Status: 100% Implemented Endpoint: GET /api/price/:marketHashName

Features Available:

  • ✅ Buff163 pricing (USD + CNY)
  • ✅ Skinport pricing (USD + EUR)
  • ✅ CSFloat pricing
  • ✅ CS.MONEY pricing
  • ✅ Steam Community Market pricing
  • ✅ Lowest/highest price detection
  • ✅ Direct marketplace URLs
  • ✅ 5-minute caching
  • ✅ Listing counts per marketplace

3. Batch Operations ✅ COMPLETE

Status: 100% Implemented

Features Available:

  • ✅ Batch price check (50 items) - POST /api/batch/prices
  • ✅ Batch float rarity (100 items) - POST /api/batch/rarity
  • ✅ Batch float premium (50 items) - POST /api/batch/float-premium
  • ✅ Batch add investments (50 items) - POST /api/portfolio/batch/add
  • ✅ Batch delete investments (100 items) - POST /api/portfolio/batch/delete

4. Trade History Import ⚠️ PARTIAL

Status: 50% Implemented

Features Available:

  • ✅ Batch add investments (can import from CSV via frontend)
  • ✅ Duplicate detection (database constraints)
  • ✅ Export to CSV/JSON - GET /api/portfolio/export/:userId

What's Missing:

  • ❌ Direct Steam trade history API integration
  • ❌ CSFloat trade tracker import
  • ❌ Automatic file upload endpoint

Action Required: Add these endpoints:

POST /api/import/steam
Body: { steamId: string; apiKey: string; startDate?: Date }

POST /api/import/csv
Body: FormData (CSV file upload)

5. Profit Calculator ✅ COMPLETE

Status: 100% Implemented (via Portfolio Sale Endpoint) Endpoint: POST /api/portfolio/sale

Features Available:

  • ✅ Automatic profit/loss calculation
  • ✅ ROI percentage calculation
  • ✅ Per-sale profit tracking
  • ✅ Realized vs unrealized profit distinction

What Could Be Enhanced: Create standalone calculator endpoint:

POST /api/calculate/profit
Body: {
  itemName: string;
  buyPrice: number;
  sellPrice: number;
  quantity: number;
  marketplace: 'Steam' | 'Buff163' | 'CSFloat' | etc;
}
Response: {
  grossProfit: number;
  fees: { steam: 15%, buff163: 2.5%, ... };
  netProfit: number;
  roi: number;
  breakEvenPrice: number;
}

6. Portfolio Tracker ✅ COMPLETE

Status: 100% Implemented

Features Available:

  • ✅ Add/edit/delete investments - POST/PATCH/DELETE /api/portfolio/...
  • ✅ Portfolio statistics - GET /api/portfolio/stats/:userId
  • ✅ Asset allocation - GET /api/portfolio/allocation/:userId
  • ✅ Portfolio health metrics - GET /api/portfolio/health/:userId
  • ✅ Recent activity - GET /api/portfolio/activity/:userId
  • ✅ Export CSV/JSON - GET /api/portfolio/export/:userId
  • ✅ Investment scoring (1-10) - POST /api/investment-score
  • ✅ Blue Gem pattern detection

Metrics Calculated:

  • Total invested, current value, profit/loss, ROI
  • Diversity score, risk score, liquidity score
  • Safe/risky allocation percentages
  • Category breakdown (Knives, Rifles, Cases, etc.)

7. Float Rarity Scoring ✅ COMPLETE

Status: 100% Implemented Endpoint: GET /api/float-rarity/:defindex/:paintindex/:floatvalue

Features Available:

  • ✅ Rarity score (0-100)
  • ✅ Rarity tier classification
  • ✅ Percentile ranking
  • ✅ Total samples seen
  • ✅ Better/worse float counts
  • ✅ Statistics (best/worst/avg floats)

8. Trade Protection ✅ COMPLETE

Status: 100% Implemented Endpoint: GET /api/ownership-history/:floatId

Features Available:

  • ✅ Ownership history tracking
  • ✅ Trade reversibility detection (<7 days)
  • ✅ Risk assessment (HIGH/SAFE)
  • ✅ Days remaining until safe
  • ✅ Reversible until date

9. Market Insights ⚠️ PARTIAL

Status: 60% Implemented

Features Available:

  • ✅ Portfolio health score (diversity, risk, liquidity) - GET /api/portfolio/health/:userId
  • ✅ Asset allocation breakdown
  • ✅ Diversification scoring

What's Missing:

  • ❌ Stagnant items detection (no price change 30+ days)
  • ❌ Top gainers/losers this week
  • ❌ Rebalancing suggestions

Action Required:

GET /api/insights/:userId
Response: {
  riskScore: number;
  diversificationScore: number;
  stagnantItems: Investment[];
  weeklyTopGainers: Investment[];
  weeklyTopLosers: Investment[];
  rebalancingSuggestions: string[];
}

10. Recent Sales Data ✅ COMPLETE

Status: 100% Implemented Endpoint: GET /api/recent-sales/:marketHashName

Features Available:

  • ✅ Recent sales with float values
  • ✅ Pattern seeds included
  • ✅ Stickers data
  • ✅ Sale date and marketplace
  • ✅ Average sale price
  • ✅ Automatic database storage for correlation analysis

❌ NOT YET IMPLEMENTED FEATURES

1. Price Alerts & Notifications ❌ NOT STARTED

Priority: HIGH (Most requested feature)

Endpoints Needed:

POST /api/alerts
Body: {
  userId: string;
  investmentId?: string;
  itemName: string;
  targetPrice?: number;
  priceChangePercent?: number;
  alertType: 'above' | 'below' | 'change';
  notificationMethod: 'email' | 'webhook' | 'push';
}

GET /api/alerts/:userId
Response: { alerts: Alert[] }

DELETE /api/alerts/:alertId

Database Schema Needed:

CREATE TABLE price_alerts (
  id SERIAL PRIMARY KEY,
  user_id TEXT NOT NULL,
  investment_id INTEGER REFERENCES portfolio_investments(id),
  item_name TEXT NOT NULL,
  target_price DECIMAL(10,2),
  price_change_percent DECIMAL(5,2),
  alert_type TEXT CHECK (alert_type IN ('above', 'below', 'change')),
  notification_method TEXT CHECK (notification_method IN ('email', 'webhook', 'push')),
  is_active BOOLEAN DEFAULT true,
  last_triggered TIMESTAMP,
  created_at TIMESTAMP DEFAULT NOW()
);

Background Job Needed:

  • Cron job to check prices every 5 minutes
  • Compare current price vs alert conditions
  • Send notifications (email/webhook/push)
  • Update last_triggered timestamp

2. Watchlist ❌ NOT STARTED

Priority: HIGH

Endpoints Needed:

POST /api/watchlist
Body: {
  userId: string;
  itemName: string;
  targetPrice?: number;
  notes?: string;
}

GET /api/watchlist/:userId
Response: {
  items: Array<{
    id: number;
    itemName: string;
    targetPrice: number;
    currentPrice: number;
    priceChange24h: number;
    addedAt: Date;
  }>
}

DELETE /api/watchlist/:watchlistId

Database Schema Needed:

CREATE TABLE watchlist (
  id SERIAL PRIMARY KEY,
  user_id TEXT NOT NULL,
  item_name TEXT NOT NULL,
  target_price DECIMAL(10,2),
  notes TEXT,
  added_at TIMESTAMP DEFAULT NOW(),
  UNIQUE(user_id, item_name)
);

3. Inventory Sync ❌ NOT STARTED

Priority: MEDIUM

Endpoints Needed:

POST /api/inventory/connect
Body: {
  userId: string;
  steamId: string;
  apiKey?: string;
}

POST /api/inventory/sync/:userId
Response: {
  added: number;
  removed: number;
  updated: number;
  totalValue: number;
  items: Item[];
}

GET /api/inventory/history/:userId?days=30
Response: {
  history: Array<{
    date: Date;
    totalValue: number;
    itemCount: number;
  }>
}

Database Schema Needed:

CREATE TABLE inventory_connections (
  id SERIAL PRIMARY KEY,
  user_id TEXT NOT NULL UNIQUE,
  steam_id TEXT NOT NULL,
  api_key TEXT,
  last_sync TIMESTAMP,
  is_active BOOLEAN DEFAULT true,
  created_at TIMESTAMP DEFAULT NOW()
);

CREATE TABLE inventory_snapshots (
  id SERIAL PRIMARY KEY,
  user_id TEXT NOT NULL,
  snapshot_date DATE DEFAULT CURRENT_DATE,
  total_value DECIMAL(10,2),
  item_count INTEGER,
  items JSONB,
  created_at TIMESTAMP DEFAULT NOW(),
  UNIQUE(user_id, snapshot_date)
);

4. Tax Reporting ❌ NOT STARTED

Priority: LOW (Advanced feature)

Endpoints Needed:

GET /api/tax-report/:userId?year=2025&method=FIFO
Response: {
  year: number;
  method: 'FIFO' | 'LIFO';
  totalRealizedGains: number;
  totalRealizedLosses: number;
  netGains: number;
  transactions: Array<{
    date: Date;
    itemName: string;
    costBasis: number;
    salePrice: number;
    gain: number;
  }>;
}

GET /api/tax-report/export/:userId?year=2025&format=csv
Response: CSV file download

Logic Needed:

  • FIFO/LIFO calculation methods
  • Group by tax year
  • Calculate cost basis per sale
  • Generate IRS-compatible CSV format

5. Social Features ❌ NOT STARTED

Priority: LOW

Endpoints Needed:

PUT /api/portfolio/visibility/:userId
Body: { isPublic: boolean }

GET /api/leaderboard?metric=roi&limit=100
Response: {
  rankings: Array<{
    username: string;
    roi: number;
    portfolioValue: number;
    rank: number;
  }>
}

GET /api/portfolio/:userId/public
Response: { stats: PublicPortfolioStats }

POST /api/follow/:targetUserId
DELETE /api/unfollow/:targetUserId
GET /api/following/:userId

Database Schema Needed:

CREATE TABLE user_profiles (
  user_id TEXT PRIMARY KEY,
  username TEXT UNIQUE NOT NULL,
  avatar_url TEXT,
  bio TEXT,
  is_portfolio_public BOOLEAN DEFAULT false,
  created_at TIMESTAMP DEFAULT NOW()
);

CREATE TABLE user_follows (
  follower_id TEXT NOT NULL,
  following_id TEXT NOT NULL,
  created_at TIMESTAMP DEFAULT NOW(),
  PRIMARY KEY (follower_id, following_id)
);

6. Smart Recommendations (AI) ❌ NOT STARTED

Priority: MEDIUM

Endpoints Needed:

GET /api/recommendations/buy?userId=x&budget=100&riskLevel=medium
Response: {
  recommendations: Array<{
    itemName: string;
    currentPrice: number;
    reasoning: string;
    confidence: number;
    expectedROI: number;
    timeframe: string;
  }>
}

GET /api/recommendations/sell/:userId
Response: {
  recommendations: Array<{
    investmentId: number;
    itemName: string;
    currentPrice: number;
    reasoning: string;
    suggestedPrice: number;
  }>
}

AI Logic Needed:

  • Trending up/down detection (30-day slope analysis)
  • Undervalued detection (float rarity vs price ratio)
  • Pattern value vs market price comparison
  • Volume analysis (increasing = bullish signal)
  • Risk-adjusted recommendations based on user's risk tolerance

7. Authentication System ❌ NOT STARTED

Priority: HIGH (Required for production)

Endpoints Needed:

POST /api/auth/register
Body: { email: string; password: string; username: string }

POST /api/auth/login
Body: { email: string; password: string }
Response: { token: string; user: User }

POST /api/auth/logout
POST /api/auth/refresh-token
GET /api/auth/me

POST /api/auth/forgot-password
POST /api/auth/reset-password

Database Schema Needed:

CREATE TABLE users (
  id SERIAL PRIMARY KEY,
  user_id TEXT UNIQUE NOT NULL, -- UUID
  email TEXT UNIQUE NOT NULL,
  username TEXT UNIQUE NOT NULL,
  password_hash TEXT NOT NULL,
  is_verified BOOLEAN DEFAULT false,
  verification_token TEXT,
  reset_token TEXT,
  reset_token_expires TIMESTAMP,
  created_at TIMESTAMP DEFAULT NOW(),
  updated_at TIMESTAMP DEFAULT NOW()
);

CREATE TABLE sessions (
  id SERIAL PRIMARY KEY,
  user_id TEXT NOT NULL REFERENCES users(user_id),
  token TEXT UNIQUE NOT NULL,
  expires_at TIMESTAMP NOT NULL,
  created_at TIMESTAMP DEFAULT NOW()
);

Security Requirements:

  • bcrypt password hashing
  • JWT tokens
  • Session management
  • Email verification
  • Rate limiting

📊 FEATURE IMPLEMENTATION SUMMARY

Feature Status Priority Effort Backend Ready
Price History ✅ Complete HIGH - 100%
Multi-Market Pricing ✅ Complete HIGH - 100%
Batch Operations ✅ Complete MEDIUM - 100%
Portfolio Tracker ✅ Complete HIGH - 100%
Float Rarity ✅ Complete HIGH - 100%
Trade Protection ✅ Complete MEDIUM - 100%
Recent Sales ✅ Complete MEDIUM - 100%
Export CSV/JSON ✅ Complete MEDIUM - 100%
Asset Allocation ✅ Complete MEDIUM - 100%
Health Metrics ✅ Complete MEDIUM - 100%
Trade History Import ⚠️ Partial (50%) MEDIUM 2-3 days 50%
Market Insights ⚠️ Partial (60%) MEDIUM 1-2 days 60%
Profit Calculator ⚠️ Partial (80%) LOW 1 day 80%
Price Alerts ❌ Not Started HIGH 3-5 days 0%
Watchlist ❌ Not Started HIGH 2-3 days 0%
Inventory Sync ❌ Not Started MEDIUM 5-7 days 0%
Authentication ❌ Not Started HIGH 5-7 days 0%
Tax Reporting ❌ Not Started LOW 3-4 days 0%
Social Features ❌ Not Started LOW 7-10 days 0%
AI Recommendations ❌ Not Started MEDIUM 5-7 days 0%

🚀 RECOMMENDED IMPLEMENTATION ORDER

Phase 1: Core Missing Features (2-3 weeks)

Goal: Get to feature parity with competitors

  1. Authentication System (5-7 days) ⭐ CRITICAL

    • Required for all user-specific features
    • Blocks production deployment

  2. Price Alerts (3-5 days) ⭐ HIGH VALUE

    • Most requested feature
    • High user engagement
    • Background job + notification system

  3. Watchlist (2-3 days) ⭐ HIGH VALUE

    • Common in finance apps
    • Easy to implement
    • Drives return visits

Phase 2: Enhanced Features (2-3 weeks)

Goal: Add automation and insights

  1. Market Insights Enhancements (1-2 days)

    • Top gainers/losers
    • Stagnant items
    • Rebalancing suggestions

  2. Trade History Import (2-3 days)

    • Steam API integration
    • CSV upload endpoint
    • Automatic duplicate detection

  3. Profit Calculator Standalone (1 day)

    • What-if scenarios
    • Fee calculations per marketplace
    • Break-even calculator

Phase 3: Advanced Features (3-4 weeks)

Goal: Differentiate from competitors

  1. Inventory Sync (5-7 days)

    • Steam API OAuth
    • Daily snapshots
    • Value tracking over time

  2. AI Recommendations (5-7 days)

    • Trending detection
    • Undervalued item finder
    • Risk-adjusted suggestions

  3. Tax Reporting (3-4 days)

    • FIFO/LIFO calculations
    • Annual reports
    • CSV export for accountants

Phase 4: Community Features (3-4 weeks)

Goal: Build community and retention

  1. Social Features (7-10 days)
    • Public portfolios
    • Leaderboards
    • Follow system

💡 QUICK WINS (< 1 Day Each)

These features can be added very quickly:

  1. Currency Converter (2 hours)

    • Add USD/EUR/GBP/CNY conversions
    • Use existing price data

  2. Dark Mode Toggle (1 hour)

    • Backend: Add user preference storage
    • PATCH /api/user/preferences { theme: 'dark' | 'light' }

  3. Item Notes Enhancement (2 hours)

    • Already in database schema
    • Just add UI support

  4. Daily P&L Widget (3 hours)

    • Calculate 24h portfolio value change
    • GET /api/portfolio/daily-change/:userId

  5. Email Notifications (4 hours)

    • Add SendGrid/SMTP integration
    • Send weekly portfolio summaries

📈 PRIORITY FEATURES FOR EXTENSION MONETIZATION

Based on your investment research, focus on these for Pro tier:

Free Tier:

  • ✅ Basic float inspection
  • ✅ Simple pricing (Steam only)
  • ✅ Portfolio tracking (up to 10 items)

Pro Tier ($4.99/mo):

  • ✅ Investment Score (already implemented)
  • ✅ Float percentile ranking (already implemented)
  • ✅ Multi-market pricing (already implemented)
  • ✅ 30-day price trends (already implemented)
  • ✅ Pattern value scoring (already implemented)
  • ❌ Price Alerts (NOT YET - HIGH PRIORITY)
  • ❌ Watchlist (NOT YET - HIGH PRIORITY)

Elite Tier ($19.99/mo):

  • ✅ Portfolio health metrics (already implemented)
  • ❌ Market crash alerts (NOT YET)
  • ❌ Trade-up calculator (NOT YET)
  • ❌ AI recommendations (NOT YET)
  • ❌ Inventory sync (NOT YET)
  • ❌ Tax reporting (NOT YET)
  • ✅ Export CSV/JSON (already implemented)
  • ❌ API access (NOT YET)

Conclusion: You're 60-70% done with Pro tier features, but 0% done with Elite tier differentiators.

🎯 FINAL RECOMMENDATIONS

  1. Immediate Priority: Authentication system (blocks production)
  2. Quick Wins: Price alerts + Watchlist (high demand, medium effort)
  3. Monetization Focus: Complete Pro tier features before Elite tier
  4. Differentiation: AI recommendations + Inventory sync (unique features)

License

Internal use only. Not for public distribution.