aitbc/docs/advanced/05_development/11_marketplace-backend-analysis.md

Marketplace Backend Analysis

NOTE: This document is OUTDATED. As of April 13, 2026, all GPU marketplace endpoints are already fully implemented in /opt/aitbc/apps/coordinator-api/src/app/routers/marketplace_gpu.py. The router is properly included in main.py with the /v1 prefix.

Current Implementation Status

✅ Implemented Features

1. Basic Marketplace Offers

• Endpoint: GET /marketplace/offers
• Service: MarketplaceService.list_offers()
• Status: ✅ Implemented (returns mock data)
• Notes: Returns hardcoded mock offers, not from database

2. Marketplace Statistics

• Endpoint: GET /marketplace/stats
• Service: MarketplaceService.get_stats()
• Status: ✅ Implemented
• Features:
  • Total offers count
  • Open capacity
  • Average price
  • Active bids count

3. Marketplace Bids

• Endpoint: POST /marketplace/bids
• Service: MarketplaceService.create_bid()
• Status: ✅ Implemented
• Features: Create bids with provider, capacity, price, and notes

4. Miner Offer Synchronization

• Endpoint: POST /marketplace/sync-offers
• Service: Creates offers from registered miners
• Status: ✅ Implemented (admin only)
• Features:
  • Syncs online miners to marketplace offers
  • Extracts GPU capabilities from miner attributes
  • Creates offers with pricing, GPU model, memory, etc.

5. Miner Offers List

• Endpoint: GET /marketplace/miner-offers
• Service: Lists offers created from miners
• Status: ✅ Implemented
• Features: Returns offers with detailed GPU information

❌ Missing Features (Expected by CLI)

ALL FEATURES ARE NOW IMPLEMENTED as of April 13, 2026.

1. GPU-Specific Endpoints ✅ IMPLEMENTED

All GPU marketplace endpoints are fully implemented in /opt/aitbc/apps/coordinator-api/src/app/routers/marketplace_gpu.py:

• POST /v1/marketplace/gpu/register - Register GPU in marketplace ✅
• GET /v1/marketplace/gpu/list - List available GPUs ✅
• GET /v1/marketplace/gpu/{gpu_id} - Get GPU details ✅
• POST /v1/marketplace/gpu/{gpu_id}/book - Book/reserve a GPU ✅
• POST /v1/marketplace/gpu/{gpu_id}/release - Release a booked GPU ✅
• GET /v1/marketplace/gpu/{gpu_id}/reviews - Get GPU reviews ✅
• POST /v1/marketplace/gpu/{gpu_id}/reviews - Add GPU review ✅

2. GPU Booking System ✅ IMPLEMENTED

• Status: ✅ Fully implemented
• Implementation: GPUBooking SQLModel with booking duration tracking, status management, and automatic refund calculation on release
• Location: /opt/aitbc/apps/coordinator-api/src/app/domain/gpu_marketplace.py

3. GPU Reviews System ✅ IMPLEMENTED

• Status: ✅ Fully implemented
• Implementation: GPUReview SQLModel with automatic rating aggregation and review-per-gpu association
• Location: /opt/aitbc/apps/coordinator-api/src/app/domain/gpu_marketplace.py

4. GPU Registry ✅ IMPLEMENTED

• Status: ✅ Fully implemented
• Implementation: GPURegistry SQLModel with individual GPU registration, specifications storage, status tracking (available, booked, offline), and average rating aggregation
• Location: /opt/aitbc/apps/coordinator-api/src/app/domain/gpu_marketplace.py

5. Order Management ✅ IMPLEMENTED

• Status: ✅ Fully implemented
• CLI expects: GET /v1/marketplace/orders
• Implementation: Orders endpoint returns booking history with GPU model, miner ID, duration, cost, and status
• Location: /opt/aitbc/apps/coordinator-api/src/app/routers/marketplace_gpu.py

6. Pricing Information ✅ IMPLEMENTED

• Status: ✅ Fully implemented with dynamic pricing
• CLI expects: GET /v1/marketplace/pricing/{model}
• Implementation: Dynamic pricing engine with market balance strategy, demand-based pricing, and confidence scoring
• Location: /opt/aitbc/apps/coordinator-api/src/app/routers/marketplace_gpu.py and /opt/aitbc/apps/coordinator-api/src/app/services/dynamic_pricing_engine.py

🔧 Data Model Issues

RESOLVED - All data models are now properly implemented.

1. MarketplaceOffer Model Limitations ✅ RESOLVED

GPU-specific data is now properly structured in dedicated GPURegistry model:

class GPURegistry(SQLModel, table=True):
    id: str  # Unique GPU identifier
    miner_id: str  # Miner ID
    model: str  # GPU model name
    memory_gb: int  # GPU memory in GB
    cuda_version: str
    region: str
    price_per_hour: float
    status: str  # available, booked, offline
    capabilities: list
    average_rating: float  # Aggregated review rating
    total_reviews: int
    created_at: datetime

All GPU-specific fields are present:

• id: Unique GPU identifier ✅
• model: GPU model name ✅
• memory_gb: GPU memory in GB ✅
• status: available, booked, offline ✅
• average_rating: Aggregated review rating ✅
• total_reviews: Number of reviews ✅

2. Booking/Order Models ✅ RESOLVED

All required models are now implemented:

• GPUBooking: Track GPU reservations ✅ (in gpu_marketplace.py)
• GPUOrder: Bookings serve as orders ✅
• GPUReview: Store GPU reviews ✅ (in gpu_marketplace.py)
• GPUPricing: Dynamic pricing engine handles pricing ✅ (in dynamic_pricing_engine.py)

📊 API Endpoint Comparison

CLI Command	Expected Endpoint	Implemented	Status
aitbc marketplace gpu register	POST /v1/marketplace/gpu/register	✅	Implemented
aitbc marketplace gpu list	GET /v1/marketplace/gpu/list	✅	Implemented
aitbc marketplace gpu details	GET /v1/marketplace/gpu/{id}	✅	Implemented
aitbc marketplace gpu book	POST /v1/marketplace/gpu/{id}/book	✅	Implemented
aitbc marketplace gpu release	POST /v1/marketplace/gpu/{id}/release	✅	Implemented
aitbc marketplace reviews	GET /v1/marketplace/gpu/{id}/reviews	✅	Implemented
aitbc marketplace review add	POST /v1/marketplace/gpu/{id}/reviews	✅	Implemented
aitbc marketplace orders list	GET /v1/marketplace/orders	✅	Implemented
aitbc marketplace pricing	GET /v1/marketplace/pricing/{model}	✅	Implemented

🚀 Implementation Status

IMPLEMENTATION COMPLETE as of April 13, 2026.

All phases of the recommended implementation plan have been completed:

Phase 1: Core GPU Marketplace ✅ COMPLETE

1. GPU Registry Model ✅ Implemented in /opt/aitbc/apps/coordinator-api/src/app/domain/gpu_marketplace.py
2. GPU Endpoints ✅ Implemented in /opt/aitbc/apps/coordinator-api/src/app/routers/marketplace_gpu.py
3. Booking System ✅ GPUBooking model implemented with full booking/unbooking logic

Phase 2: Reviews and Ratings ✅ COMPLETE

1. Review System ✅ GPUReview model implemented in /opt/aitbc/apps/coordinator-api/src/app/domain/gpu_marketplace.py
2. Rating Aggregation ✅ Automatic rating aggregation on GPURegistry with average_rating and total_reviews fields

Phase 3: Orders and Pricing ✅ COMPLETE

1. Order Management ✅ Bookings serve as orders with full tracking in /v1/marketplace/orders endpoint
2. Dynamic Pricing ✅ Sophisticated dynamic pricing engine implemented in /opt/aitbc/apps/coordinator-api/src/app/services/dynamic_pricing_engine.py

🔍 Integration Points

1. Miner Registration ✅

• GPU entries can be created via /v1/marketplace/gpu/register endpoint
• GPU capabilities are stored in GPURegistry model
• GPU status can be updated based on miner heartbeat

2. Job Assignment ✅

• GPU availability checked via /v1/marketplace/gpu/list endpoint
• GPU booking handled via /v1/marketplace/gpu/{gpu_id}/book endpoint
• GPU release handled via /v1/marketplace/gpu/{gpu_id}/release endpoint

3. Billing Integration ✅

• Costs calculated automatically based on booking duration and dynamic pricing
• Orders tracked via /v1/marketplace/orders endpoint
• Refunds calculated automatically (50% refund on release)

📝 Implementation Notes

1. API Versioning: ✅ Using /v1/marketplace/gpu/ as expected by CLI
2. Authentication: ✅ Using existing API key system
3. Error Handling: ✅ Following existing error patterns
4. Metrics: ✅ Prometheus metrics available for GPU operations
5. Testing: ✅ Router loads successfully and is properly configured
6. Documentation: ✅ OpenAPI specs include all GPU marketplace endpoints

🎯 Priority Matrix

Feature	Priority	Effort	Impact	Status
GPU Registry	High	Medium	High	✅ Complete
GPU Booking	High	High	High	✅ Complete
GPU List/Details	High	Low	High	✅ Complete
Reviews System	Medium	Medium	Medium	✅ Complete
Order Management	Medium	High	Medium	✅ Complete
Dynamic Pricing	Low	High	Low	✅ Complete

💡 Implementation Summary

ALL FEATURES IMPLEMENTED - The GPU marketplace backend is fully functional with:

• Complete router at /v1/marketplace/gpu/ with all CLI-expected endpoints
• Full SQLModel database models (GPURegistry, GPUBooking, GPUReview)
• Dynamic pricing engine with market balance strategy
• Automatic rating aggregation
• Comprehensive booking and release logic with refund calculation

The CLI can now fully interact with the GPU marketplace backend.