u/BuildwithPublic

Big unlock for anyone building AI trading agents on r/PublicApp

Historical bar data is now live. Here's what that actually means for your agent:

→ Backtest your strategy before going live — pull up to 5 years of OHLCV on any symbol

→ Feed historical bars into your signal layer — momentum, mean reversion, regime detection

→ Run intraday models with 1-minute resolution

→ Pre and after-market data included as separate segments

The execution side hasn't changed: $0.10/contract rebate, full multileg support. Docs + quickstart: public.com/api/docs

What are you building?

Been experimenting a lot with Agents at r/PublicApp and wanted to share what's possible for active options traders. I honestly never thought in my wildest dreams this tech would be available to retail traders in their brokerage account.

What I did was I described a simple 0DTE SPY workflow in plain English and the agent built for me and executed it autonomously against my live brokerage account.

Here's exactly what it does:

Every weekday at 9:45am ET it scans the SPY 0DTE call chain, filters for contracts with open interest above 1000 and a gamma/theta ratio above 3.0, buys 3 contracts of the top ranked setup, and exits automatically at 50% gain or 30% loss.

What's really interesting from a trader perspective is that you're not just automating execution -you're encoding your actual decision logic into the deterministic workflow. Greeks-based ranking, liquidity filters, risk gates. The agent runs the same process every morning without deviation-purely deterministic, no hallucinations.

Still super early but this feels like a genuine shift in how active traders will interact with the market. Happy to answer questions on the setup or help you try out agents- DM me

https://reddit.com/link/1t03g3x/video/92tg7ljp6dyg1/player