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Stock API: What it is and Why it Matters
How I decide on a data provider before writing the integration, and why that choice outlasts the code.
Jul 26
•
Cornellius Yudha Wijaya
2
Manager Memo: Does Your Team Still Need SQL when AI writes it?
For managers evaluating AI-assisted analytics and data-team operating models
Jul 19
•
Cornellius Yudha Wijaya
2
Building a Minimal Agent Harness in Python
A beginner-friendly guide to running agent code in another process and stopping it when it takes too long.
Jul 16
•
Cornellius Yudha Wijaya
7
Why Valid SQL Returns Wrong Numbers
Three ways a query runs without an error and still returns the wrong number, with the query and the fix for each.
Jul 9
•
Cornellius Yudha Wijaya
4
My book is out: Python Data Analysis, Fourth Edition
Co-written with my co-author, and what the year of writing it was like.
Jul 4
•
Cornellius Yudha Wijaya
4
1
June 2026
Fix it or throw it away: deciding what to do with an AI output
The harder part is knowing which problems you can fix and which ones mean starting over.
Jun 30
•
Cornellius Yudha Wijaya
2
Why Most GenAI Workflows Need a Review Loop
A Better Prompt Is Not Enough
Jun 24
•
Cornellius Yudha Wijaya
3
Manager Memo: Reviewing GenAI Output Before It Reaches Stakeholders
A guide for managers who approve AI-assisted work: what to check, when to reject, and how to talk to stakeholders about it.
Jun 20
•
Cornellius Yudha Wijaya
2
What Most GenAI Evaluation Workflows Get Wrong
Reliability is not a property of the final answer. It is a property of the whole system that produced it.
Jun 14
•
Cornellius Yudha Wijaya
6
1
May 2026
From Prompt to Reliable Output: A Practical GenAI Evaluation Workflow
A concise guide to achieve success in your production GenAI generation
May 31
•
Cornellius Yudha Wijaya
5
Best MCP Servers for Stock Market Data
The best MCP servers for connecting AI agents to financial workflow
May 21
•
Cornellius Yudha Wijaya
3
1
The GenAI Skill Data Professionals Need Most: Evaluation
Only by evaluating things that we know our system is good.
May 14
•
Cornellius Yudha Wijaya
7
4
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