# LOPJLB API for developers & AI agents

URL: https://www.lopjlb.com/developers

LOPJLB is a quant research layer, not a raw market-data API. A nightly desk re-scores 12,000+ U.S. names and ships evidence with the call — direction, backtested stats, HMM regime, factor scores, and earnings CallCard synthesis.

Programmatic access is over one BFF at `https://www.lopjlb.com/bff/api/`. Free: thin `signal-card` teaser (`depth=public`) plus freemium detail / earnings intel (anon ticker budget 30/min · 500/day) — no login. Full PF packs and cross-section `/universe` need a Pro browser session or an Enterprise API key.

## Quick links

- HTML docs: https://www.lopjlb.com/developers
- OpenAPI JSON: https://www.lopjlb.com/openapi.json
- Screener schema bundle: https://www.lopjlb.com/schema/screener.json
- Screener metrics dictionary: https://www.lopjlb.com/bff/api/schema/metrics
- llms.txt: https://www.lopjlb.com/llms.txt
- Agent discovery: https://www.lopjlb.com/.well-known/agent.json
- MCP server card: https://www.lopjlb.com/.well-known/mcp/server-card.json
- Agent auth skill: https://www.lopjlb.com/auth.md
- Pricing: https://www.lopjlb.com/pricing.md
- Skill: `npx skills add lopjlb/lopjlb-skill`

## Agent surfaces

| Surface | Free | With Enterprise key |
|---|---|---|
| REST / BFF | regime, PIT universes, alt-context, ledgers, thin signal-card, detail/intel | Full signal-card, Pro REST, export, MCP |
| CLI `lopjlb` | `ticker`, `regime`, `ask`, `universes`, `congress`, `schema` | `screen`, `peers`, `export`, `intraday` / `iexh` |
| HTTP MCP | — | `POST /bff/api/mcp` |

```bash
uv tool install lopjlb
lopjlb ticker AAPL
lopjlb regime
curl -s https://www.lopjlb.com/bff/api/hmm/latest
curl -s https://www.lopjlb.com/schema/screener.json
```

Not personalized investment advice. contact@lopjlb.com