[DEVELOPERS]

LOPJLB API for developers & AI agents

Programmatic access to quantitative U.S. equity research: market regime, screener data, ticker detail, and signal metrics. Public endpoints require no authentication.

Quick links

openapi.json — Machine-readable API spec
llms.txt — Agent navigation index
api/llms.txt — Endpoint reference
/.well-known/agent.json — Agent discovery
pricing.md — Tier limits

Base URL

https://www.lopjlb.com/bff/api/

All requests go through the BFF proxy on the web origin. Do not call api.lopjlb.com directly — it requires an internal key.

Public quickstart (no auth)

# Current market regime (HMM)
curl -s https://www.lopjlb.com/bff/api/hmm/latest

# Search tickers
curl -s 'https://www.lopjlb.com/bff/api/bigfive/search?q=AAPL'

# Screener preview (top-ranked subset)
curl -s https://www.lopjlb.com/bff/api/bigfive/universe-preview

# Market pulse (breadth, sectors, regime)
curl -s https://www.lopjlb.com/bff/api/market-pulse

# Ticker detail (freemium — signals, fundamentals, backtest)
curl -s https://www.lopjlb.com/bff/api/bigfive/detail/AAPL

Authentication tiers

Tier	Scope	How
public	Regime, search, preview, market pulse	No credentials
freemium	Ticker detail, fundamentals, ETF holdings	No credentials (range clamped on sparklines)
pro	Full universe, peers, SD50 allocation, chat	WorkOS session + pro entitlement
enterprise	API keys, MCP server, webhooks, bulk export	Contact contact@lopjlb.com

Auth for AI agents (browser session)

Pro endpoints require a WorkOS AuthKit session cookie obtained by signing up at /signup. Agents running in a browser context can use the session cookie after user login. Programmatic API keys for headless agents are available on Enterprise tier.

Create an account at /signup (email, Google, or Apple)
Subscribe to Pro at /pricing (7-day free trial)
Pass the WorkOS session cookie on BFF requests

Webhooks

Pro and Enterprise users can configure outbound webhooks for signal alerts (Slack, Discord, custom URL). See the platform docs for setup instructions.

Enterprise: API keys & MCP

REST API keys and an MCP server for LLM agents are in active development for Enterprise tier. Email contact@lopjlb.com for early access. See MCP server card.

Rate limits

Public endpoints: 120 requests/minute and 10,000 requests/day per IP. Enterprise tiers include higher limits suitable for trading desks.

Repository

See AGENTS.md in the LOPJLB repository for coding-agent instructions when integrating with this codebase.