StackOneHQ · vale9888 · Aug 28, 2025
diff --git a/docs/polymarket-integration-plan.md b/docs/polymarket-integration-plan.md
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+# Polymarket Integration: Development & Testing Plan
+
+## Overview
+
+This document outlines the structured approach for building and testing a Polymarket integration for the MCP Connectors project. Polymarket is a prediction market platform where users can trade on real-world event outcomes.
+
+## 1. Research & Planning Phase
+
+### 1.1 Understanding Polymarket's Domain
+
+**Core Concepts:**
+- **Prediction Markets**: Markets where users bet on event outcomes
+- **Markets**: Trading venues for specific questions/events
+- **Outcomes**: Possible results (Yes/No, multiple choice)
+- **Positions**: User holdings in specific outcomes
+- **Liquidity**: Available trading volume
+- **Settlement**: How markets resolve and payouts occur
+
+**Key Use Cases:**
+- Browse active prediction markets
+- Get detailed market information and current probabilities
+- Search for specific markets by topic
+- View trending markets
+- Check user portfolio and positions (with API key)
+- View trading history (with API key)
+
+### 1.2 API Research Requirements
+
+**Before Implementation:**
+1. **Study Polymarket's API documentation** (if available)
+2. **Identify the actual API endpoints** and their structure
+3. **Understand authentication methods** (API keys, OAuth, etc.)
+4. **Map out data models** for markets, outcomes, positions, trades
+5. **Test API endpoints** manually to understand response formats
+
+**Key Questions to Answer:**
+- What's the base URL for Polymarket's API?
+- What authentication method does Polymarket use?
+- What are the actual endpoint paths and parameters?
+- How are probabilities and prices represented?
+- What's the rate limiting structure?
+- Are there different permission levels (public vs private data)?
+
+## 2. Implementation Structure
+
+### 2.1 File Organization
+
+```
+packages/mcp-connectors/src/connectors/
+├── polymarket.ts          # Main connector implementation
+├── polymarket.spec.ts     # Comprehensive test suite
+└── __mocks__/
+    └── context.ts         # Mock context for testing
+```
+
+### 2.2 Code Structure (Following Established Patterns)
+
+**1. Type Definitions:**
+```typescript
+interface PolymarketMarket {
+  id: string;
+  question: string;
+  outcomes: PolymarketOutcome[];
+  liquidity: number;
+  status: 'open' | 'closed' | 'settled';
+  // ... other fields
+}
+```
+
+**2. API Client Class:**
+```typescript
+class PolymarketClient {
+  constructor(apiKey?: string) { /* ... */ }
+
+  async getMarkets(limit?: number, category?: string): Promise<PolymarketMarket[]>
+  async getMarket(marketId: string): Promise<PolymarketMarket>
+  async searchMarkets(query: string): Promise<PolymarketMarket[]>
+  // ... other methods
+}
+```
+
+**3. Connector Configuration:**
+```typescript
+export const PolymarketConnectorConfig = mcpConnectorConfig({
+  name: 'Polymarket',
+  key: 'polymarket',
+  // ... configuration
+  tools: (tool) => ({
+    GET_MARKETS: tool({ /* ... */ }),
+    GET_MARKET: tool({ /* ... */ }),
+    // ... other tools
+  }),
+});
+```
+
+### 2.3 Tools to Implement
+
+**Public Data Tools (No API Key Required):**
+1. `polymarket_get_markets` - List markets with optional filtering
+2. `polymarket_get_market` - Get detailed market information
+3. `polymarket_search_markets` - Search markets by keyword
+4. `polymarket_get_trending_markets` - Get trending markets
+
+**Private Data Tools (API Key Required):**
+5. `polymarket_get_user_profile` - User balance and portfolio summary
+6. `polymarket_get_user_positions` - Current positions across markets
+7. `polymarket_get_trade_history` - Recent trading activity
+
+## 3. Testing Strategy
+
+### 3.1 Test Structure (Following Project Standards)
+
+**File: `polymarket.spec.ts`**
+
+**Test Organization:**
+```typescript
+describe('#PolymarketConnector', () => {
+  describe('.GET_MARKETS', () => {
+    describe('when API call succeeds', () => {
+      describe('and markets are returned', () => {
+        it('returns formatted markets list', async () => {
+          // Test implementation
+        });
+      });
+
+      describe('and no markets are returned', () => {
+        it('returns no markets message', async () => {
+          // Test implementation
+        });
+      });
+    });
+
+    describe('when API call fails', () => {
+      it('returns error message', async () => {
+        // Test implementation
+      });
+    });
+  });
+
+  // ... similar structure for all tools
+});
+```
+
+### 3.2 Test Coverage Requirements
+
+**For Each Tool:**
+- ✅ **Happy Path**: Successful API calls with valid data
+- ✅ **Empty Results**: API returns empty arrays/objects
+- ✅ **Error Handling**: API errors, network failures
+- ✅ **Input Validation**: Invalid parameters, missing required fields
+- ✅ **Authentication**: API key required vs optional scenarios
+
+**Specific Test Cases:**
+1. **GET_MARKETS**: Test with/without category filter, different limits
+2. **GET_MARKET**: Test with valid/invalid market IDs
+3. **SEARCH_MARKETS**: Test with various search queries
+4. **User Tools**: Test with/without API key, various user states
+
+### 3.3 Mocking Strategy
+
+**Use MSW (Mock Service Worker) for API mocking:**
+```typescript
+import { http, HttpResponse } from 'msw';
+import { setupServer } from 'msw/node';
+
+const server = setupServer(
+  http.get('https://api.polymarket.com/v1/markets', () => {
+    return HttpResponse.json({
+      data: [/* mock market data */]
+    });
+  })
+);
+```
+
+**Mock Context:**
+```typescript
+const mockContext = createMockConnectorContext({
+  apiKey: 'test-api-key',
+});
+```
+
+## 4. Development Workflow
+
+### 4.1 Step-by-Step Implementation
+
+**Phase 1: Basic Structure**
+1. ✅ Create `polymarket.ts` with type definitions
+2. ✅ Implement `PolymarketClient` class with basic methods
+3. ✅ Create connector configuration with placeholder tools
+4. ✅ Add to main index exports
+
+**Phase 2: Core Functionality**
+1. 🔄 Implement public data tools (GET_MARKETS, GET_MARKET, etc.)
+2. 🔄 Add proper error handling and input validation
+3. 🔄 Create formatting functions for LLM consumption
+4. 🔄 Test with real API endpoints (if available)
+
+**Phase 3: User-Specific Features**
+1. ⏳ Implement private data tools (user profile, positions, trades)
+2. ⏳ Add authentication handling
+3. ⏳ Test with API key scenarios
+
+**Phase 4: Testing & Polish**
+1. ⏳ Write comprehensive test suite
+2. ⏳ Add edge case handling
+3. ⏳ Performance optimization
+4. ⏳ Documentation updates
+
+### 4.2 Debugging Strategy
+
+**Local Development:**
+1. **Use the testing agent** to test the connector locally
+2. **Add console.log statements** for debugging API responses
+3. **Test with real Polymarket API** (if available)
+4. **Use browser dev tools** to inspect network requests
+
+**Error Handling:**
+```typescript
+try {
+  const result = await client.getMarkets(args.limit);
+  return formatMarketsList(result);
+} catch (error) {
+  console.error('Polymarket API error:', error);
+  return `Failed to get markets: ${error instanceof Error ? error.message : String(error)}`;
+}
+```
+
+## 5. Integration Points
+
+### 5.1 Adding to Main Exports
+
+**Update `packages/mcp-connectors/src/index.ts`:**
+```typescript
+import { PolymarketConnectorConfig } from './connectors/polymarket';
+
+export const Connectors: readonly MCPConnectorConfig[] = [
+  // ... existing connectors
+  PolymarketConnectorConfig,
+  // ... rest of connectors
+];
+
+export {
+  // ... existing exports
+  PolymarketConnectorConfig,
+  // ... rest of exports
+};
+```
+
+### 5.2 Configuration Requirements
+
+**Credentials Schema:**
+```typescript
+credentials: z.object({
+  apiKey: z
+    .string()
+    .optional()
+    .describe('Polymarket API Key (optional for public data, required for user-specific data)'),
+}),
+```
+
+**Setup Schema:**
+```typescript
+setup: z.object({}),
+```
+
+## 6. Quality Assurance
+
+### 6.1 Code Quality Checks
+
+**Before Submission:**
+1. ✅ Run `npm run check` for linting
+2. ✅ Run `npm run test` for all tests
+3. ✅ Run `npm run build` to ensure compilation
+4. ✅ Test with the testing agent locally
+
+### 6.2 Testing Checklist
+
+**Functional Testing:**
+- [ ] All tools work with valid inputs
+- [ ] Error handling works for invalid inputs
+- [ ] API key requirements are enforced correctly
+- [ ] Response formatting is consistent and readable
+- [ ] Rate limiting is handled gracefully
+
+**Integration Testing:**
+- [ ] Connector loads without errors
+- [ ] All tools are accessible through MCP server
+- [ ] Credentials are handled correctly
+- [ ] Error messages are user-friendly
+
+## 7. Future Enhancements
+
+### 7.1 Potential Additional Features
+
+**Advanced Trading Features:**
+- Place buy/sell orders (if API supports)
+- Get order book depth
+- Real-time price updates
+- Market alerts and notifications
+
+**Analytics Features:**
+- Market performance metrics
+- User trading statistics
+- Portfolio analytics
+- Risk assessment tools
+
+**Social Features:**
+- Market comments/discussions
+- User reputation systems
+- Market creation (if supported)
+
+### 7.2 Performance Optimizations
+
+**Caching Strategy:**
+- Cache market data for short periods
+- Implement request deduplication
+- Use pagination for large datasets
+
+**Error Recovery:**
+- Implement retry logic for failed requests
+- Add circuit breaker patterns
+- Graceful degradation for partial failures
+
+## 8. Documentation
+
+### 8.1 User Documentation
+
+**Example Prompts:**
+- "Show me trending prediction markets"
+- "Get details about the Bitcoin price prediction market"
+- "Search for markets related to the 2024 election"
+- "What are my current positions and P&L?"
+
+**API Reference:**
+- Document all tool parameters
+- Provide example responses
+- Explain authentication requirements
+- List common error scenarios
+
+### 8.2 Developer Documentation
+
+**Implementation Notes:**
+- API endpoint documentation
+- Data model explanations
+- Error handling patterns
+- Testing strategies
+
+## 9. Deployment & Monitoring
+
+### 9.1 Production Considerations
+
+**Environment Variables:**
+- API rate limits
+- Timeout configurations
+- Logging levels
+
+**Monitoring:**
+- API response times
+- Error rates
+- Usage patterns
+- Rate limit usage
+
+### 9.2 Rollout Strategy
+
+**Phases:**
+1. **Alpha**: Internal testing with mock data
+2. **Beta**: Limited external testing with real API
+3. **Production**: Full release with monitoring
+
+**Rollback Plan:**
+- Feature flags for gradual rollout
+- Monitoring alerts for issues
+- Quick rollback procedures
+
+---
+
+## Next Steps
+
+1. **Research Polymarket's actual API** and update the implementation accordingly
+2. **Implement the basic structure** following the established patterns
+3. **Write comprehensive tests** for all scenarios
+4. **Test with real API endpoints** when available
+5. **Iterate based on feedback** and real-world usage
+
+This plan provides a structured approach to building a robust Polymarket integration that follows the project's established patterns and quality standards.