Webull

Webull is a D library for the Webull OpenAPI, providing authenticated access to market data plus typed account access for account lists, balances, profiles, and positions.

Features

Authentication

• HMAC-SHA1 Signing - Automatic request signing with app key/secret
• Token Lifecycle - Create, poll, and cache authentication tokens with MFA support
• Permission Detection - Runtime probing of available API permissions
• Configurable Endpoint - Switch between production, UAT, or local dummy endpoints via Client.endpoint

Market Data

• Bars - OHLCV candlestick data with configurable timespans (M1 through yearly)
• Snapshots - Real-time price, volume, and change data with extended/overnight hours
• Order Book - Level-2 quotes with configurable depth
• Ticks - Individual trade records with volume and direction
• Footprint - Delta volume analysis with buy/sell level breakdowns

Accounts

• Account List - Discover all accounts available to the app key
• Account Profile - Fetch static account metadata like account number, type, and status
• Account Balance - Retrieve total assets, buying power, and per-currency balances
• Account Positions - Auto-paginate holdings into typed position records

Security Types

• US Stocks - US_STOCK
• US Options - US_OPTION
• Hong Kong Stocks - HK_STOCK
• China Stocks - CN_STOCK
• Cryptocurrency - CRYPTO
• Futures - FUTURES

Quick Start

Requirements:

• D compiler (DMD/LDC)
• Webull OpenAPI credentials (key + secret)

Setup:

import webull.client;
import webull.account;

// Configure credentials
Client.key = "your_app_key";
Client.secret = "your_app_secret";
Client.endpoint = "https://api.webull.com";

// Access accounts
auto accounts = getAccounts();
foreach (account; accounts)
{
    getAccountProfile(account);
    getAccountBalance(account, "USD");
    getAccountPositions(account, 100);
    writeln(account.accountId, " => ", account.balance("USD").totalAsset);
}

API Overview

Client

• createToken() - Initiate authentication with optional polling callback
• checkToken() - Validate current token status
• detectPermissions() - Probe available API endpoints
• accounts() - Convenience helper that returns account IDs
• endpoint - Override the API base URL, e.g. https://api.webull.com

Security

• autoUpdate - Automatic refresh of cached market data
• bars() - Retrieve OHLCV history
• snapshot() - Current quote data
• orderBook() - Bid/ask levels
• ticks() - Recent trades

Account

• getAccounts() - Retrieve typed account objects
• getAccountProfile() - Populate static account metadata
• getAccountBalance() - Populate balance and per-currency asset details
• getAccountPositions() - Retrieve all holdings with pagination handled internally
• Account.profile() / Account.balance() / Account.positions() - Lazy convenience accessors

Market Functions

• getBars() - Single or batch bar retrieval
• getSnapshot() - Single or batch snapshots
• getOrderBook() - Level-2 market depth
• getTicks() - Trade tick history
• getFootprint() - Volume delta analysis

Architecture

• webull.client - Authentication state and token management
• webull.account - Typed account, balance, profile, and position access
• webull.security - Security objects with auto-updating data accessors
• webull.market - Market data endpoints (bars, quotes, ticks, snapshots, footprint)
• webull.orchestrate - HMAC-SHA1 request signing and HTTP orchestration

Examples And Tests

• Run the account console demo: dub run -c account-console-demo
• Force the demo into simulated screenshot mode: WEBULL_DEMO_MODE=simulate dub run -c account-console-demo
• Render a specific screenshot-ready view: WEBULL_DEMO_MODE=simulate WEBULL_DEMO_VIEW=overview dub run -c account-console-demo
• Available views: overview, margin, cash, holdings
• Unmask digits in the demo output: WEBULL_MASK_NUMBERS=0 dub run -c account-console-demo
• Run dummy tests against the local validation server: dub test -c dummy-tests
• Run live tests if you have credentials available: dub test -c live-tests
• Run both suites together: dub test -c full-tests

Roadmap

• HMAC-SHA1 authentication
• Token lifecycle management
• Bars API (single + batch)
• Snapshots API (single + batch)
• Order book API
• Tick data API
• Footprint API
• Account list API
• Account balance API
• Account profile API
• Account positions API
• WebSocket streaming
• Order placement API

License

Webull is licensed under the AGPL-3.0 license.