DevAi App Playground (2024)
A public showcase of earlier AI side-projects, InvestAI Analyst Platform, a Natural-Language-to-SQL app, a YouTube summariser, and a set of custom ChatGPT GPTs.
Stack: Varies per project. Python / Gradio / OpenAI on the NL-to-SQL app; custom GPTs for the ChatGPT ones. Status: Archived playground. The current work has moved to edenfintech-scanner-python and edenfintech.com. Live: No longer published. The devai.co.za domain now hosts this wiki.
The story
devai.co.za was labelled “App Playground”, a place to show AI side-projects in development with an explicit invitation to test and give feedback. The things on it weren’t polished products; they were artefacts of learning my way around the toolchain in 2024.
The showcased projects:
- InvestAI Analyst Platform: a multi-analyst AI stock analysis tool with MA / Bollinger / MACD / RSI / volume charting. The precursor to the scanner.
- Natural-Language-to-SQL app: Python + Gradio + OpenAI GPT-3.5-turbo querying a Postgres database from English prompts.
- YouTube video summariser: transcript-in, summary-out tool; the lineage that continued into yt-ts.
- Custom ChatGPT GPTs: a Content Simplifier and a TradingChartGPT with an ICT-rules rulebook. The TradingChartGPT has a worked XAU/USD 1-hour analysis example dated 31 July 2024.
The inspirations credited on the site, CrewAI, Fabric (ExtractWisdom), PraisonAI, are the visible lineage of the agent-graph thinking that ended up in edenfintech-scanner-python. devai is where I learned enough of the toolchain to build the current scanner.
The site still carries a standing disclaimer: informational/educational purpose only, no reliance for trading decisions.
What this proves
- AI / Agentic Systems, earliest public LLM work; CrewAI / Fabric / PraisonAI as formative references; custom GPTs as a second surface.
- Design & Brand, self-branded playground site, positioning as a developer rather than an agency.
Decisions worth a deeper read
Populated as the decision pages land. Likely candidate: why I left devai as a playground and didn’t try to consolidate it into the current EdenFintech product.
