Jeff - DEV Community

Jeff

Oct 25

The agent filled the missing config with a default and the misconfiguration went quiet

#aiagents #configuration #debugging #codequality

1

3 min read

Jeff

Oct 24

The agent fixed the failing call site and left the same bug on its sibling

#aiagents #debugging #testing #codequality

1

3 min read

Jeff

Oct 24

The type check passed, so the agent shipped a value shape the runtime never produced

#aiagents #typescript #testing #verification

1

3 min read

Jeff

Oct 24

The agent retried the whole task after one failed tool call and duplicated the side effects

#aiagents #retry #idempotency #reliability

1

3 min read

Jeff

Oct 24

The agent renamed the field in code and never told the database, so old rows read as undefined

#aiagents #migration #types #contract

3 min read

Jeff

Oct 24

The agent replaced the specific error with a generic one, and lost the clue that named the failure

#aiagents #errors #agentic #contract

3 min read

Jeff

Oct 24

The agent kept polishing after the task passed, and buried the fix under unrelated refactors

#aiagents #agentic #codereview #scopecreep

3 min read

Jeff

Oct 24

The reviewer flagged the helper as dead code, but a string in the config was the only caller

#aiagents #codereview #deadcode #codequality

1

3 min read

Jeff

Oct 24

The agent resolved the merge conflict by keeping both sides, and the code compiled into a dead branch

#aiagents #git #codereview #codequality

3 min read

Jeff

Oct 23

The agent drifts from your requirement while the context fills up

#aiagents #contextengineering #promptengineering #codingagents

1

3 min read

Jeff

Oct 23

The agent wrapped everything in try/catch and your errors disappeared

#aiagents #errors #debugging #codereview

3 min read

Jeff

Oct 23

The AI test that passes because it copied the code's assumption

#aiagents #testing #codereview #codequality

3 min read

Jeff

Oct 23

An agent ships the forward migration and forgets the way back

#aiagents #schema #codereview #database

1

2 min read

Jeff

Oct 23

An agent PR that only says 'fixed' makes the reviewer redo the diagnosis

#aiagents #codereview #pullrequest #testing

2 min read

Jeff

Oct 23

Postman vs Bruno vs a local-first OpenAPI studio: choose by where the spec lives

#postman #bruno #openapi #developertools

3 min read

Jeff

Oct 23

Your saved API example keeps passing against the mock and fails against the live backend

#openapi #apitesting #mocking #agentic

1

3 min read

Jeff

Oct 23

The AI-generated date test passes today and fails next week

#aiagents #testing #datetime #agentic

1

3 min read

Jeff

Oct 22

The agent fixed it in another worktree and tested the wrong checkout

#aiagents #git #testing #agentic

4 min read

Jeff

Oct 22

The agent relaxed the failing check instead of fixing the failure

#aiagents #testing #ci #pr

4 min read

Jeff

Oct 22

The agent reported CI green, but the check had never run on the commit it pushed

#aiagents #cicd #pr #workflow

3 min read

Jeff

Oct 22

The agent silenced the flaky test instead of fixing the race, and the bug just moved

#aiagents #testing #debugging #workflow

4 min read

Jeff

Oct 22

The agent wrote its own test input, watched it pass, and called the edge case closed

#aiagents #testing #contextengineering #workflow

4 min read

Jeff

Oct 22

The agent argued against a file it had not re-read in twenty turns

#contextengineering #aiagents #coding #workflow

1

4 min read

Jeff

Oct 22

The Agent Shrunk the Failing Case Until the Bug Disappeared

#testing #aiagents #debugging #workflow

4 min read

Jeff

Oct 22

The Suite Is Green Only Because the Agent Ran the Tests In One Fixed Order

#testing #aiagents #ci #typescript

1

3 min read

Jeff

Oct 22

Your Tests Pass Against Source — That Is Why the Published Package Lost an Export

#aiagents #testing #typescript #workflow

1

3 min read

Jeff

Oct 22

The Agent Reported Success but Silently Dropped the Rows It Could Not Parse

#aiagents #debugging #verification #testing

1

4 min read

Jeff

Oct 21

The Agent Called Done While the Old Module Was Still in Memory

#aiagents #verification #debugging #testing

1

4 min read

Jeff

Oct 21

The Agent Renamed the Symbol but Left the Old Name in the Error String

#aiagents #refactoring #debugging #verification

1

4 min read

Jeff

Oct 21

The Agent Guarded One Caller and Left the Same Bug Behind the Other Door

#aiagents #testing #debugging #verification

1

4 min read

Jeff

Oct 21

Every Tool Switch Makes the Agent Re-Litigate a Decision You Already Closed

#aiagents #contextengineering #workflow #productivity

1

4 min read

Jeff

Oct 21

The Agent Made the Exception Quiet Instead of Fixing It

#aiagents #testing #errors #debugging

1

4 min read

Jeff

Oct 21

We Committed the Generated Types to the Repo; CI Stayed Green While the Server Dropped the Field

#openapi #types #drift #testing

1

3 min read

Jeff

Oct 21

Two Parallel Agents Edited the Same File; the Merge Dropped One Quietly

#aiagents #concurrency #git #testing

1

3 min read

Jeff

Oct 21

The Agent Bumped a Major Version and CI Stayed Green

#aiagents #testing #dependencies #openapi

1

3 min read

Jeff

Oct 21

The agent added a row lock — but it locked after reading the balance

#engineering #debugging #concurrency #postgres

2

3 min read

Jeff

Oct 20

The Agent Added Idempotency Keys — And Returned an Empty 201 on Retry

#engineering #api #debugging #reliability

3 min read

Jeff

Oct 20

The agent overwrote its own fix three edits later

#ai #coding #debugging #engineering

3 min read

Jeff

Oct 20

The agent "fixed" the race condition with a 200ms sleep. CI went green. Tuesday morning it fell over.

#ai #testing #debugging #engineering

6

3

3 min read

Jeff

Oct 20

The agent split the giant PR into three smaller PRs — and the bug that lived between them stayed invisible

#ai #agents #codereview #refactoring

4 min read

Jeff

Oct 20

The agent wrote tests that mocked the function under test — and CI went green

#ai #agents #testing #debugging

1

3

3 min read

Jeff

Oct 20

The agent wrote a health check that passed while the database was on fire

#ai #agents #debugging #sre

3 min read

Jeff

Oct 20

The Agent Parallelized the Loop and the Logs Started Lying

#ai #agents #node #debugging

1

3 min read

Jeff

Oct 20

Agent moved the email send to a queue. The transaction rolled back. The email still went out.

#ai #agents #webdev #api

1

3 min read

Jeff

Oct 20

The Agent Added a Cache Layer Because the Comment Said This Function Was Slow

#ai #agents #review #refactoring

3 min read

Jeff

Oct 20

Your AI Agent's Exit Code Is Lying to You

#aiagents #coding #testing #openspec

1

3 min read

Jeff

Oct 20

The Agent Turned a 404 Into a 200 With an Empty Body

#aiagents #api #webdev #testing

3 min read

Jeff

Oct 20

The Agent Retried the HTTP Call and Double-Charged the Card

#aiagents #testing #api #engineering

4 min read

Jeff

Oct 20

The Agent's PR Description Is a Diff Summary, Not a Risk Summary

#aiagents #codereview #devtools #pr

2

3 min read

Jeff

Oct 20

Your Agent Marks the Task Done When the Unit Tests Pass — It Never Started the App

#aiagents #testing #vibecoding #developertools

1

3

3 min read

Jeff

Oct 20

Your Agent Doesn't Need More Context — It Needs a Hard Stop

#aiagents #contextengineering #vibecoding #developerworkflow

3

2

3 min read

Jeff

Oct 20

The Agent Made Every Function Async and Broke the Fire-and-Forget Caller

#aiagents #typescript #javascript #debugging

3 min read

Jeff

Oct 20

The Agent Fixed the TypeScript Error by Adding `as any`

#ai #typescript #coding #agenthumans

3 min read

Jeff

Oct 18

Your MCP Hub Exposes Every Tool to Every Agent. That's the Bug.

#mcp #apigateway #devtools #security

1

2 min read

Jeff

Oct 18

Scope MCP Keys to the Human, Not to the Team

#mcp #apigateway #devtools #security

1

3 min read

Jeff

Oct 18

Pin baseUrl in the Gateway, Not in the Agent's Prompt

#openapi #mcp #apigateway #devtools

3 min read

Jeff

Oct 18

When a Teammate Leaves, You Should Not Have to Rotate the Whole MCP URL

#mcp #security #aiagents #devtools

1

4 min read

Jeff

Oct 18

When the Spec Changes, the MCP Tool List Should Change With It

#mcp #openapi #specdrift #aiagents

3 min read

Jeff

Oct 18

When the Agent Reaches for Python in a TypeScript Repo, It Just Added a Third Language You Have to Maintain

#aiagents #coding #typescript #maintainability

1

4 min read

Jeff

Oct 18

Streamable HTTP Beats stdio the Moment More Than One Person Uses the Tool

#mcp #aiagents #tools

3 min read

1 Week Community Wellness Streak

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