> For the complete documentation index, see [llms.txt](https://docs.openalgo.in/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openalgo.in/developers/design-documentation/13-chartink-architecture.md). # 13 - Chartink Architecture ## Overview Chartink integration allows OpenAlgo to receive trading signals from Chartink screener alerts via webhooks. When a stock appears in a Chartink scanner, it triggers a webhook that OpenAlgo processes to place trades automatically. > **Note**: The Chartink integration uses a "Strategy" concept (not "Scanner") where each strategy has symbol-level configuration with time-based trading controls. ## Architecture Diagram
Chartink integration: webhook with rate limit, handler reading openalgo.db, in-memory order queues drained by a paced thread and a square-off scheduler, posting to the REST API and on to brokers
## Database Schema **Location:** `database/chartink_db.py` ```python class ChartinkStrategy(Base): """Model for Chartink strategies - each strategy has time-based trading controls""" __tablename__ = 'chartink_strategies' id = Column(Integer, primary_key=True) name = Column(String(255), nullable=False) # Strategy name webhook_id = Column(String(36), unique=True, nullable=False) # UUID for webhook user_id = Column(String(255), nullable=False) # Owner is_active = Column(Boolean, default=True) # Enable/disable is_intraday = Column(Boolean, default=True) # Intraday mode flag start_time = Column(String(5)) # Trading start (HH:MM format) end_time = Column(String(5)) # Trading end (HH:MM format) squareoff_time = Column(String(5)) # Auto square-off time (HH:MM) created_at = Column(DateTime(timezone=True), server_default=func.now()) updated_at = Column(DateTime(timezone=True), onupdate=func.now()) # Relationships symbol_mappings = relationship("ChartinkSymbolMapping", back_populates="strategy", cascade="all, delete-orphan") class ChartinkSymbolMapping(Base): """Symbol-level configuration - maps Chartink symbols to trading parameters""" __tablename__ = 'chartink_symbol_mappings' id = Column(Integer, primary_key=True) strategy_id = Column(Integer, ForeignKey('chartink_strategies.id'), nullable=False) chartink_symbol = Column(String(50), nullable=False) # Symbol from Chartink exchange = Column(String(10), nullable=False) # NSE/BSE quantity = Column(Integer, nullable=False) # Order quantity product_type = Column(String(10), nullable=False) # MIS/CNC created_at = Column(DateTime(timezone=True), server_default=func.now()) updated_at = Column(DateTime(timezone=True), onupdate=func.now()) # Relationships strategy = relationship("ChartinkStrategy", back_populates="symbol_mappings") ``` > **Key Differences from Scanner Model**: The strategy model does NOT have `action` (BUY/SELL), `default_quantity`, or scanner-level `exchange`/`product_type`. Instead, trading parameters are defined per-symbol in the mapping table. ## Webhook Configuration ### Chartink Setup 1. Go to Chartink Scanner 2. Edit scanner settings 3. Add webhook URL: `http://your-domain/chartink/webhook/` (the webhook ID is part of the URL path, not the body) 4. Chartink posts its standard alert body. OpenAlgo reads three fields from it: ```json { "stocks": "SBIN,RELIANCE,INFY", "trigger_prices": "625.5,2450.1,1650.0", "scan_name": "My BUY Scan" } ``` > **Important**: The action is derived from the keyword in `scan_name`. `BUY` and `SHORT` are entry orders sent to `placeorder` with the mapped quantity. `SELL` and `COVER` are exit orders sent to `placesmartorder` with `quantity=0` and `position_size=0`. A scan name containing none of these four keywords is rejected with HTTP 400. ### OpenAlgo Setup 1. Navigate to `/chartink` 2. Create new strategy. The name is automatically prefixed with `chartink_` if it does not already start with it. 3. Copy the generated `webhook_id` 4. Configure time-based trading controls (required when the strategy type is intraday): * **Start Time**: When to start accepting signals (HH:MM) * **End Time**: When to stop accepting entry signals (HH:MM) * **Square-off Time**: Auto close positions (HH:MM) * **Intraday Mode**: Enable for MIS trades 5. Add symbol mappings with per-symbol configuration: * **Chartink Symbol**: Symbol as sent by Chartink * **Exchange**: NSE or BSE only * **Product Type**: MIS or CNC only * **Quantity**: Order quantity for this symbol ## Symbol Mapping Each symbol in a strategy has its own trading configuration: | Chartink Symbol | Exchange | Product | Quantity | | --------------- | -------- | ------- | -------- | | SBIN | NSE | MIS | 100 | | RELIANCE | NSE | CNC | 10 | | INFY | NSE | MIS | 50 | > **Note**: Unlike scanner-level defaults, each symbol must have its exchange, product, and quantity explicitly configured in the symbol mapping. There are no fallback defaults: a symbol arriving in the webhook with no mapping is logged and skipped, and a strategy with no mappings at all rejects the webhook with HTTP 400. ## Processing Flow
Chartink webhook processing: strategy lookup, active check, scan_name keyword, intraday time window, mappings and API key, then entry or exit orders queued
## API Endpoints Blueprint: `chartink_bp`, `url_prefix="/chartink"`. | Endpoint | Method | Description | | ---------------------------------------------------- | -------- | ------------------------------------ | | `/chartink/webhook/` | POST | Receive Chartink alerts | | `/chartink/` | GET | List strategies | | `/chartink/new` | GET/POST | Create strategy | | `/chartink/` | GET | View strategy | | `/chartink//delete` | POST | Delete strategy | | `/chartink//toggle` | POST | Enable/disable strategy | | `/chartink//configure` | GET/POST | Add symbol mappings (single or bulk) | | `/chartink//symbol//delete` | POST | Delete one symbol mapping | | `/chartink/search` | GET | Symbol search helper | | `/chartink/api/strategies` | GET | List strategies as JSON | | `/chartink/api/strategy/` | GET | Strategy details as JSON | | `/chartink/api/strategy` | POST | Create strategy as JSON | | `/chartink/api/strategy//toggle` | POST | Toggle strategy as JSON | Rate limits actually applied: `WEBHOOK_RATE_LIMIT` on the webhook route only. `STRATEGY_RATE_LIMIT` on `/new`, `//delete`, `//configure`, `//symbol//delete` and `/api/strategy`. The remaining routes carry no `@limiter.limit` decorator. ## Database Functions **Strategy Management:** * `create_strategy(name, webhook_id, user_id, is_intraday, start_time, end_time, squareoff_time)` * `get_strategy(strategy_id)` - Get strategy by ID * `get_strategy_by_webhook_id(webhook_id)` - Get strategy by webhook ID * `get_user_strategies(user_id)` - Get all strategies for a user * `get_all_strategies()` - Get all strategies * `delete_strategy(strategy_id)` - Delete a strategy * `toggle_strategy(strategy_id)` - Toggle active status * `update_strategy_times(strategy_id, start_time, end_time, squareoff_time)` - Update trading times **Symbol Mapping Management:** * `add_symbol_mapping(strategy_id, chartink_symbol, exchange, quantity, product_type)` * `bulk_add_symbol_mappings(strategy_id, mappings)` - Add multiple mappings at once * `get_symbol_mappings(strategy_id)` - Get all mappings for a strategy * `delete_symbol_mapping(mapping_id)` - Delete a mapping ## Webhook Payload Format ### From Chartink Posted to `/chartink/webhook/abc123-def456-ghi789`: ```json { "stocks": "SBIN,RELIANCE,INFY,TATAMOTORS", "trigger_prices": "625.5,2450.1,1650.0,720.4", "scan_name": "Momentum BUY Scan" } ``` ### Processed Order (entry, BUY or SHORT) Queued to `/api/v1/placeorder`: ```json { "apikey": "user_api_key", "strategy": "chartink_momentum", "symbol": "SBIN", "exchange": "NSE", "action": "BUY", "product": "MIS", "pricetype": "MARKET", "quantity": "100" } ``` ### Processed Order (exit, SELL or COVER) Queued to `/api/v1/placesmartorder`: ```json { "apikey": "user_api_key", "strategy": "chartink_momentum", "symbol": "SBIN", "exchange": "NSE", "action": "SELL", "product": "MIS", "pricetype": "MARKET", "quantity": "0", "position_size": "0", "price": "0", "trigger_price": "0", "disclosed_quantity": "0" } ``` ## Configuration ### Environment Variables Defaults as written in `blueprints/chartink.py`: ```bash WEBHOOK_RATE_LIMIT="100 per minute" STRATEGY_RATE_LIMIT="200 per minute" HOST_SERVER="http://127.0.0.1:5000" ``` `HOST_SERVER` is the base URL the queued orders are posted back to. ### Strategy Settings | Setting | Description | Default | | ---------------- | ---------------------------- | -------------- | | `name` | Strategy name | Required | | `webhook_id` | UUID for webhook | Auto-generated | | `user_id` | Owner user ID | Current user | | `is_active` | Enable/disable strategy | true | | `is_intraday` | Intraday trading mode | true | | `start_time` | Trading window start (HH:MM) | None | | `end_time` | Trading window end (HH:MM) | None | | `squareoff_time` | Auto square-off time (HH:MM) | None | ### Symbol Mapping Settings | Setting | Description | Required | | ----------------- | --------------------------------------- | -------- | | `chartink_symbol` | Symbol from Chartink | Yes | | `exchange` | Trading exchange (NSE or BSE only) | Yes | | `quantity` | Order quantity (must be greater than 0) | Yes | | `product_type` | Product type (MIS or CNC only) | Yes | ## Use Cases ### Momentum Scanner ``` Chartink: Stocks crossing 20 DMA with volume spike OpenAlgo: Auto-buy with MIS product, qty=100 ``` ### Breakout Scanner ``` Chartink: Stocks breaking 52-week high OpenAlgo: Auto-buy with CNC product for delivery ``` ### Exit Scanner ``` Chartink: Stocks falling below support OpenAlgo: Auto-sell to close positions ``` ## Key Files Reference | File | Purpose | | ---------------------------------------------------------- | ------------------ | | `blueprints/chartink.py` | Chartink blueprint | | `database/chartink_db.py` | Database models | | `frontend/src/pages/chartink/ChartinkIndex.tsx` | Strategy list UI | | `frontend/src/pages/chartink/NewChartinkStrategy.tsx` | Creation UI | | `frontend/src/pages/chartink/ViewChartinkStrategy.tsx` | Detail UI | | `frontend/src/pages/chartink/ConfigureChartinkSymbols.tsx` | Symbol mapping UI |