Longbridge Developers Platform

Full-stack financial data and trading platform: CLI, Python/Rust SDK, MCP, and LLM integration.

Official docs: https://open.longbridge.com llms.txt: https://open.longbridge.com/llms.txt

For setup and authentication details, see references/setup.md.

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Data Query Priority

Always use the CLI for data queries. Use MCP only if the CLI cannot fulfill the request.

CLI covers (use these first):

• Market data: quotes, K-line history, intraday, extended hours
• News, filings, topics, market sentiment
• Account: positions, portfolio, assets, orders, statements
• Institutional: investors (SEC 13F), insider trades

Fall back to MCP only when:

• longbridge --help confirms no command exists for the required data
• The user's environment has no CLI installed or accessible

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Investment Analysis Workflow

When the user asks about stock performance, portfolio advice, or market analysis:

1. Get live data via CLI — quotes, positions, K-line history, intraday. CLI first; MCP only if CLI can't cover it.
2. Get news/catalysts via CLI — prefer Longbridge first; fall back to WebSearch only if insufficient
3. Combine — price action + volume + catalyst → analysis + suggestion

# Market data
longbridge quote SYMBOL.US
longbridge positions                # stock positions
longbridge portfolio                # P/L, asset distribution, holdings, cash (always pull when user asks about "my portfolio")
longbridge kline history SYMBOL.US --start YYYY-MM-DD --end YYYY-MM-DD --period day
longbridge intraday SYMBOL.US

# News & content (prefer these over WebSearch)
longbridge news SYMBOL.US           # latest news articles
longbridge news detail <id>         # full article content
longbridge filing SYMBOL.US         # regulatory filings list (8-K, 10-Q, 10-K, etc.)
longbridge topic SYMBOL.US          # community discussion
longbridge market-temp              # market sentiment index (0–100)

# Account
longbridge assets                   # full asset overview: cash, buying power, margin, risk level
longbridge statement --help         # check subcommands for statement export options

# Institutional investors (SEC 13F)
longbridge investors                # top active fund managers by AUM
longbridge investors <CIK>          # holdings for a specific investor by CIK
longbridge insider-trades SYMBOL.US # SEC Form 4 insider transaction history

For commands with complex flags, always run longbridge <command> --help for current options.

Only fall back to WebSearch when Longbridge news is insufficient (e.g., breaking news not yet indexed, macro events unrelated to a specific symbol).

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Choose the Right Tool

AI agents fetching data: CLI first, MCP only as fallback when CLI lacks the capability.

User wants to...                         → Use
─────────────────────────────────────────────────────────────────
Quick quote / one-off data lookup        CLI  ← AI default
Interactive terminal workflows           CLI
Script market data, save to file         CLI + jq  (or Python SDK)
Loops, conditions, transformations       Python SDK (sync)
Async pipelines, concurrent fetches      Python SDK (async)
Production service, high throughput      Rust SDK
Real-time WebSocket subscription loop    SDK (Python or Rust)
Programmatic order strategy              SDK
Data not available via CLI               MCP (fallback)
Talk to AI about stocks (no code)        MCP (hosted or self-hosted)
Use Cursor/Claude for trading analysis   MCP
Add Longbridge API docs to IDE/RAG       LLMs.txt / Markdown API

Symbol Format

<CODE>.<MARKET> — applies to all tools.

Reference Files

CLI (Terminal)

• Overview — install, auth, output formats, patterns: references/cli/overview.md

Always use longbridge --help to list available commands, and longbridge <command> --help for specific options and flags. Do not rely on hardcoded documentation — the CLI's built-in help is always up-to-date.

Python SDK

• Overview — install, Config, auth, HttpClient: references/python-sdk/overview.md
• QuoteContext — all quote methods + subscriptions: references/python-sdk/quote-context.md
• TradeContext — orders, account, executions: references/python-sdk/trade-context.md
• Types & Enums — Period, OrderType, SubType, push types: references/python-sdk/types.md

Rust SDK

• Overview — Cargo.toml, Config, auth, error handling: references/rust-sdk/overview.md
• QuoteContext — all methods, SubFlags, PushEvent: references/rust-sdk/quote-context.md
• TradeContext — orders, SubmitOrderOptions builder, account: references/rust-sdk/trade-context.md
• Content — news, filings, topics (ContentContext + Python fallback): references/rust-sdk/content.md
• Types & Enums — all Rust enums and structs: references/rust-sdk/types.md

AI Integration

• MCP — hosted service, self-hosted server, setup & auth: references/mcp.md
• LLMs & Markdown — llms.txt, open.longbridge.com doc Markdown, longbridge.com live news/quote pages (.md suffix + Accept header), Cursor/IDE integration: references/llm.md

Load specific reference files on demand — do not load all at once.