Implement On-chain Agent Reputation System

[Aditya8369]

✅ Implementation Summary

1. Reputation Calculation Engine

Added comprehensive calculation functions in database.ts:

• calculateReputationMetrics() - Computes metrics by user ID
• calculateReputationMetricsByWallet() - Computes metrics by wallet address

Metrics Calculated:

• Total swaps, successful swaps, failed swaps, pending swaps
• Success rate (percentage)
• Trust Score (0-100) - Weighted formula:
  • Success Rate: 60%
  • Volume: 20% (normalized to $10k baseline)
  • Swap Count: 10% (normalized to 50 swaps baseline)
  • Recency: 10% (active/moderate/inactive)
• Average swap value & total volume
• Last swap date & activity level (active/moderate/inactive)

2. API Endpoint

Created reputation.ts:

• GET /api/reputation?userId=... or ?walletAddress=...
• Returns trust score and all reputation metrics
• Cached for 5 minutes to reduce database load

3. Frontend Hook

Created useReputation.ts:

• React hook for fetching reputation data
• Supports auto-refetch with configurable intervals
• Error handling and loading states
• Success/error callbacks

4. Beautiful UI Component

Created ReputationCard.tsx:

• Full mode: Detailed card with all metrics (for profile page)
• Compact mode: Essential info only (for sidebar)
• Color-coded trust levels:
  • 🟢 Excellent (80+): Green
  • 🔵 Good (60-79): Cyan
  • 🟡 Fair (40-59): Yellow
  • 🟠 Building (1-39): Orange
• Shows success rate, swap count, total volume, and activity status
• "Top Tier" badge for exceptional reputation

5. Integration Points

• ✅ Profile Page: Full reputation card with detailed metrics (right column)
• ✅ Terminal/Dashboard: Compact reputation card in sidebar for quick reference

6. Documentation

Created comprehensive REPUTATION_SYSTEM.md with:

• System architecture and data flow
• API reference and usage examples
• Trust score interpretation guide
• Future enhancement ideas
• Testing instructions

🎯 Key Features

✨ Trust Score Algorithm: Balances success rate, volume, activity count, and recency
📊 Visual Indicators: Color-coded cards and progress bars for easy interpretation
⚡ Performance: API caching and optimized database queries
📱 Responsive Design: Works on all screen sizes with compact and full modes
🔒 Type-Safe: Full TypeScript implementation with proper interfaces

closes #223

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Project	Deployment	Actions	Updated (UTC)
swap-smith	Error		Feb 18, 2026 1:40pm

[GauravKarakoti]

Let me try

[GauravKarakoti]

Build gave error

Type error: No overload matches this call.
  Overload 1 of 4, '(value: string | number | Date): Date', gave the following error.
    Argument of type 'Date | null' is not assignable to parameter of type 'string | number | Date'.
      Type 'null' is not assignable to type 'string | number | Date'.
  Overload 2 of 4, '(value: string | number): Date', gave the following error.
    Argument of type 'Date | null' is not assignable to parameter of type 'string | number'.
      Type 'null' is not assignable to type 'string | number'.
  827 |     // Get last swap date
  828 |     const lastSwap = userSwaps.reduce((latest, current) => {
> 829 |       const currentDate = new Date(current.createdAt);
      |                                    ^
  830 |       const latestDate = new Date(latest.createdAt);
  831 |       return currentDate > latestDate ? current : latest;
  832 |     });