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oji - building AI in public

Building AI agents & automation in public. Solo dev shipping scrapers, bots & LLM tools-the wins, the bugs, the code. Weekend builder JP.

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My AI Agent Recommended a Non-Existent Investment Product — Exposing Information Gaps Between Fund Distributors and Asset Manage

My AI Agent Recommended a Non-Existent Investment Product — Exposing Information Gaps Between Fund Distributors and Asset Manage

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4 min read
When I Asked AI to Analyze "FANG+" and It Started Investigating Oil Companies — The Ticker Symbol Trap

When I Asked AI to Analyze "FANG+" and It Started Investigating Oil Companies — The Ticker Symbol Trap

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3 min read
Predicting Shareholder Meeting Failure: How AI Quantified Risk from a Single Sentence in Past Minutes and a 5x Increase in Share

Predicting Shareholder Meeting Failure: How AI Quantified Risk from a Single Sentence in Past Minutes and a 5x Increase in Share

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4 min read
My AI Lied to Me About a Stock Crash — Adversarial Testing Revealed Its Limits (and How to Use AI Correctly)

My AI Lied to Me About a Stock Crash — Adversarial Testing Revealed Its Limits (and How to Use AI Correctly)

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3 min read
My Investment Bot's Sell Rule Was Broken: How I Added SEC EDGAR Filings to Catch 'Pre-Bankruptcy' Signals Sooner

My Investment Bot's Sell Rule Was Broken: How I Added SEC EDGAR Filings to Catch 'Pre-Bankruptcy' Signals Sooner

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4 min read
My AI Agent Saved Me from a 287% Revenue Growth Trap

My AI Agent Saved Me from a 287% Revenue Growth Trap

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3 min read
"40% Annual Market Growth!" ...So Why Is the Entire Industry Losing Money? Data-Driven Dive Into the 'Quantity Grows, Profit Die

"40% Annual Market Growth!" ...So Why Is the Entire Industry Losing Money? Data-Driven Dive Into the 'Quantity Grows, Profit Die

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4 min read
My Trading Bot "Perma-Held" a Delisted Stock: The Silent Bug of Disappearing Historical Data

My Trading Bot "Perma-Held" a Delisted Stock: The Silent Bug of Disappearing Historical Data

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4 min read
AI Task Done, Output File Corrupted?! How Preserving 'Transcripts' Saved My Data

AI Task Done, Output File Corrupted?! How Preserving 'Transcripts' Saved My Data

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4 min read
Hunting for the Next 10x Stock: Why Most Deep Tech "Moonshots" Are Just Running on Fumes (and How I Screen for Survival)

Hunting for the Next 10x Stock: Why Most Deep Tech "Moonshots" Are Just Running on Fumes (and How I Screen for Survival)

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4 min read
My Investment Screener's 'Exclusion List' Was Full of Zombies (Literally)

My Investment Screener's 'Exclusion List' Was Full of Zombies (Literally)

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3 min read
My Build Was Stuck: A 700-Second API Fetch Timeout in a 600-Second Environment. Here's How I Fixed It with a Self-Healing Cache.

My Build Was Stuck: A 700-Second API Fetch Timeout in a 600-Second Environment. Here's How I Fixed It with a Self-Healing Cache.

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4 min read
The Trap of Stale Docs: How I Almost Rewrote a "Rejected" Trading Strategy I Found in an Old Book

The Trap of Stale Docs: How I Almost Rewrote a "Rejected" Trading Strategy I Found in an Old Book

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4 min read
Don't Delete, Archive: How I Safely "Retired" Zombie Code with `git mv` and `_archive/`

Don't Delete, Archive: How I Safely "Retired" Zombie Code with `git mv` and `_archive/`

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4 min read
My Stock Buyback Bot Was Crushing It... Thanks to 220 Phantom Signals from Stock Consolidations

My Stock Buyback Bot Was Crushing It... Thanks to 220 Phantom Signals from Stock Consolidations

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3 min read
My bot kept dying every morning with a mysterious network error. Here’s how Task Scheduler’s 'automatic retry' setting brought i

My bot kept dying every morning with a mysterious network error. Here’s how Task Scheduler’s 'automatic retry' setting brought i

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4 min read
No Backtesting Needed! I Punched My Hypothesis's "Heart" Directly with Raw Data and It Died Before I Even Measured Returns

No Backtesting Needed! I Punched My Hypothesis's "Heart" Directly with Raw Data and It Died Before I Even Measured Returns

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4 min read
My X (Twitter) Weekly Report Bot Showed '0 Followers' for Two Months—The Culprit Was a Non-Existent Account Name in My .env File

My X (Twitter) Weekly Report Bot Showed '0 Followers' for Two Months—The Culprit Was a Non-Existent Account Name in My .env File

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4 min read
When to Sell Winning Stocks? I Backtested My "Half-Profit Take" Rule Against 15 Exit Strategies – My Current Rule Dominated!

When to Sell Winning Stocks? I Backtested My "Half-Profit Take" Rule Against 15 Exit Strategies – My Current Rule Dominated!

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4 min read
My Algorithmic Trading Bot Silently Failed to Notify: The Curious Case of Missing `.env` Loads Across Scripts

My Algorithmic Trading Bot Silently Failed to Notify: The Curious Case of Missing `.env` Loads Across Scripts

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4 min read
My Trading Bot's Silent Killer: How Forgetting to Load `.env` Across Scripts Silenced Discord Notifications

My Trading Bot's Silent Killer: How Forgetting to Load `.env` Across Scripts Silenced Discord Notifications

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4 min read
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