Alex Chen - DEV Community

Alex Chen

Sep 24

Learn Empty Diffs by Building a Tiny Prompt Journal

#python #beginners #ai #learning

7 min read

Alex Chen

Sep 22

Learn Tool-Call Type Drift by Building a Tiny Contract Guard

#python #beginners #ai #machinelearning

8 min read

Alex Chen

Sep 21

Learn Eval Gaming by Building a Tiny Gold-Span Checker

#python #ai #beginners #testing

6 min read

Alex Chen

Sep 20

Learn Answer Drift by Building a Tiny Twin-Run Ledger

#python #beginners #testing #ai

8 min read

Alex Chen

Sep 19

Learn Self-Grade Collapse by Building a Tiny Predicate Jury

#python #machinelearning #beginners #ai

6 min read

Alex Chen

Sep 18

Learn Weak Oracles by Building a Tiny Spec Checker

#python #ai #beginners #testing

7 min read

Alex Chen

Sep 17

Why This Quoted CSV Row Fails: A Python Experiment

#python #beginners #ai #testing

7 min read

Alex Chen

Sep 16

Learn Fixture Leakage by Building a Tiny Prompt Scrubber

#python #testing #beginners #ai

7 min read

Alex Chen

Sep 15

Case Study: A Token Meter, a Free Server, and 60 Lecture Slides

#ai #python #opensource #tutorial

7 min read

Alex Chen

Sep 13

Learn Eval Ownership by Building a Tiny Lab Witness

#python #beginners #ai #learning

8 min read

Alex Chen

Sep 12

Learn Grounding by Building a Tiny Quote Lock

#python #ai #beginners #machinelearning

7 min read

Alex Chen

Sep 11

Learn Loop Budgets by Building a Tiny Lab Dropbox

#python #beginners #ai #tutorial

7 min read

Alex Chen

Sep 10

Build a Tiny Claim Ledger Before You Trust a Course Bot

#python #ai #beginners #agents

8 min read

Alex Chen

Sep 9

Build a Tiny Span Check Before You Trust a Parsed Deadline

#python #ai #beginners #testing

8 min read

Alex Chen

Sep 6

Build a Tiny Mutation Check Before You Trust Generated Tests

#python #testing #beginners #ai

6 min read

Alex Chen

Sep 5

Learn Tool Contracts by Building a Tiny Room-Booking Agent

#python #beginners #ai #agents

8 min read

Alex Chen

Sep 4

Why This Week Plan Fails: A Slot-Filling Experiment

#python #beginners #ai #agents

7 min read

Alex Chen

Sep 4

My Chatbot's Amnesia: A Lesson in Context Management

#ai #python #llm #beginners

4 min read

Alex Chen

Sep 4

Free Tokens Are Not Context: A Haystack Test for Long-Context Decay

#ai #llm #opensource #python

5 min read

Alex Chen

Sep 3

Build a Tiny Lab Receipt Before You Trust Model JSON

#python #beginners #ai #tutorial

7 min read

Alex Chen

Sep 2

Free Models Are Not a Budget. They Are a Ceiling: A Metering Case Study

#python #llm #productivity #ai

6 min read

Alex Chen

Sep 1

The Day My Lecture Notes Bot Contradicted Itself

#ai #python #rag #beginners

1

4 min read

Alex Chen

Aug 31

Your Bot's Memory File Is a Liar. Build a Nightly Auditor to Catch It

#ai #llm #python #productivity

6 min read

Alex Chen

Aug 30

My Chatbot Believed My Lie for 20 Turns. Here’s the Tiny Experiment.

#ai #llm #python #testing

3 min read

Alex Chen

Aug 29

My arXiv Bot Ran 14 Nights on a Free Server. 2 Nights It Gave Up.

#showdev #ai #python #tutorial

5 min read

Alex Chen

Aug 28

My Bot Passed Every Check and Still Failed. The Validator Was the Liar.

#ai #llm #python #testing

5 min read

Alex Chen

Aug 26

I Seeded Bugs Into My Own PR to Test the AI Reviewer

#ai #python #testing #llm

5 min read

Alex Chen

Aug 25

My Syllabus Bot Ran a Week on a Free Server. 9 Answers Were Confident Lies.

#ai #python #llm #tutorial

5 min read

Alex Chen

Aug 25

A Stranger Overrode My Study Bot's Rules. The Logs Showed Everything.

#ai #security #python #beginners

4 min read

Alex Chen

Aug 22

My Free Model Made 400 Flashcards. 37 Were Wrong. So I Wrote a Filter.

#ai #python #llm #beginners

5 min read

Alex Chen

Aug 21

My Study Bot Invented Citations. A 30-Line Ledger Caught Them.

#ai #llm #agents #python

5 min read

Alex Chen

Aug 20

My AI-Written Test Suite Hit 94% Coverage. Then I Mutated the Code.

#testing #python #ai #llm

4 min read

Alex Chen

Aug 20

A Case Study: My Free-Tier Bot Kept Forgetting the Schema

#ai #python #rag #casestudy

5 min read

Alex Chen

Aug 19

I Put My Lecture Notes on a Free Server for a Week

#ai #python #opensource #llm

6 min read

Alex Chen

Aug 19

I Ran a Nightly AI Digest on Free Infrastructure for a Week

#ai #python #productivity #learning

5 min read

Alex Chen

Aug 19

A Case Study: My Free Model Caught a Test-Deleting PR Before Merge

#ai #python #codereview #tutorial

4 min read

Alex Chen

Aug 18

Build a Tiny Tool-Result Gatekeeper Before You Trust an Agent's 'Done'

#ai #agents #python #opensource

5 min read

Alex Chen

Aug 17

Build a Tiny Model Ledger Before Spending Free Tokens

#ai #python #tutorial #opensource

5 min read

Alex Chen

Aug 17

Learn Why Free Token Grants Still Queue by Building a Tiny Concurrency Probe

#python #ai #beginners #performance

4 min read

Alex Chen

Aug 17

Build a Tiny False-Positive Auditor for AI Text Detectors

#ai #llm #python #beginners

4 min read

Alex Chen

Aug 16

Learn Why Agents Lie About Tool Failures by Building a Tiny Honesty Probe

#ai #agents #security #beginners

3 min read

Alex Chen

Aug 16

Build a Tiny Streaming Timer Before You Trust a Free Model Endpoint

#ai #python #llm #beginners

1

5 min read

Alex Chen

Aug 16

Learn Why AI Text Detection Fails by Building a Tiny Watermark Verifier

5 min read

Alex Chen

Aug 15

Learn Prompt Regression Testing by Building a Tiny Golden-Set Harness

#ai #llm #python #testing

3 min read

Alex Chen

Aug 15

Learn Why Identical Prompts Return Different Outputs by Building a Tiny Repeatability Probe

#ai #python #beginners #llm

4 min read

Alex Chen

Aug 15

Learn Why Free Tokens Can Miss Your Deadline by Building a Tiny Budget Probe

#python #ai #llm #beginners

4 min read

Alex Chen

Aug 15

Learn to Budget a Free Model Tier by Building a Tiny Token Ledger

#python #ai #beginners #llm

3 min read

Alex Chen

Aug 14

Build a Tiny Endpoint Canary Before Trusting a Free Model Tier

#ai #python #beginners #programming

1

4 min read

Alex Chen

Aug 14

Learn Fallback Logic by Building a Tiny Failure-Observer

#python #ai #api #beginners

4 min read

Alex Chen

Aug 14

Why a Free LLM Server Drops the Last Streamed Chunk: A Tiny SSE Recorder

#python #ai #debugging #llm

3 min read

Alex Chen

Aug 14

Learn to Validate a Free LLM Endpoint by Building a Tiny Request Probe

#ai #python #opensource #beginners

4 min read

Alex Chen

Aug 14

Build a Tiny Prompt-Invariance Canary Before Automating an LLM Task

#ai #python #testing #beginners

4 min read

Alex Chen

Aug 13

Learn Provider-Agnostic Model Routing by Building a Tiny LLM Switchboard

#python #ai #llm #beginners

5 min read

Alex Chen

Aug 10

Learn Why Open-Model Benchmarks Mislead by Building a Tiny Eval Harness

#ai #llm #python #opensource

5 min read

Alex Chen

Aug 7

Learn Instruction Hierarchy by Breaking a Tiny Chatbot

#ai #llm #security #learning

5 min read

Alex Chen

Aug 6

Learn Why Agent Tool Boundaries Fail by Building a Tiny Permission Harness

#ai #agents #python #beginners

1

5 min read

Alex Chen

Aug 5

Learn Why Agent Token Counts Mislead by Building a Tiny Budget Harness

#ai #llm #python #beginners

5 min read

Alex Chen

Aug 5

Learn Prompt Budgets by Building a Tiny LLM Request Linter

#ai #python #beginners #learning

4 min read

Alex Chen

Aug 4

Learn Prompt Sensitivity by Building a Tiny A/B Tester

#ai #beginners #python #learning

4 min read

Alex Chen

Jul 31

Learn Slopsquatting by Building a Tiny PyPI Package Checker

#python #security #ai #beginners

4 min read

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