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Penloom Studio

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Never trust an LLM's output directly. Here's the validation layer I put on every agent.

Never trust an LLM's output directly. Here's the validation layer I put on every agent.

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5 min read
Prompt caching cut my Claude API bill by 85%. Here's the exact setup.

Prompt caching cut my Claude API bill by 85%. Here's the exact setup.

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5 min read
Fair use is a defense, not a license: what actually protects a meme from a takedown

Fair use is a defense, not a license: what actually protects a meme from a takedown

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3 min read
The CLAUDE.md sections that actually matter (and the ones wasting your context)

The CLAUDE.md sections that actually matter (and the ones wasting your context)

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6 min read
Your call-to-action can be present and still dead-end. Audit for clickable, not just for the URL.

Your call-to-action can be present and still dead-end. Audit for clickable, not just for the URL.

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2 min read
LLM temperature is not a creativity dial. Here's what it actually does.

LLM temperature is not a creativity dial. Here's what it actually does.

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4 min read
How my long-running AI agent remembers across sessions — git history as the state log

How my long-running AI agent remembers across sessions — git history as the state log

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4 min read
The silent fallback that hid a 3-week-old crash in my agent pipeline

The silent fallback that hid a 3-week-old crash in my agent pipeline

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Comments
4 min read
I cloned 5 open-source AI-video repos so you don't have to (honest verdicts)

I cloned 5 open-source AI-video repos so you don't have to (honest verdicts)

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3 min read
Your AI agent will pass any test it's allowed to edit

Your AI agent will pass any test it's allowed to edit

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5 min read
The 5 client emails freelancers rewrite the most (with the exact sentences)

The 5 client emails freelancers rewrite the most (with the exact sentences)

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5 min read
The Biggest Pirate Heist in History Was Pulled Off by a Man Almost No One Remembers

The Biggest Pirate Heist in History Was Pulled Off by a Man Almost No One Remembers

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5 min read
Stop Scrolling Your Agent's Logs. Debug It Like a Program.

Stop Scrolling Your Agent's Logs. Debug It Like a Program.

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4 min read
AI image models still can't spell. Stop asking them to.

AI image models still can't spell. Stop asking them to.

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4 min read
The polite sentence that stops scope creep before it eats your week

The polite sentence that stops scope creep before it eats your week

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5 min read
When to spawn a subagent (and when it just burns tokens)

When to spawn a subagent (and when it just burns tokens)

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5 min read
Stop Your AI Coding Agent From Making the Same Mistake Twice: a CLAUDE.md / AGENTS.md Workflow That Actually Works

Stop Your AI Coding Agent From Making the Same Mistake Twice: a CLAUDE.md / AGENTS.md Workflow That Actually Works

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5 min read
How to write an AI agent that knows when to stop and ask

How to write an AI agent that knows when to stop and ask

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8 min read
Five tool-calling patterns that separate hobby AI agents from production ones

Five tool-calling patterns that separate hobby AI agents from production ones

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6 min read
Context rot: why your AI agent gets dumber the longer it runs

Context rot: why your AI agent gets dumber the longer it runs

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6 min read
Never trust an LLM's output directly. Here's the validation layer I put on every agent.

Never trust an LLM's output directly. Here's the validation layer I put on every agent.

Comments
5 min read
Prompt caching cut my Claude API bill by 85%. Here's the exact setup.

Prompt caching cut my Claude API bill by 85%. Here's the exact setup.

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Comments
5 min read
Your AI agent calls the wrong tool — and your JSON schema is usually why

Your AI agent calls the wrong tool — and your JSON schema is usually why

Comments 1
5 min read
Your CLAUDE.md is too long — and that's why Claude Code ignores it

Your CLAUDE.md is too long — and that's why Claude Code ignores it

Comments 1
5 min read
Why your AI agent is flaky — and 7 rules that make it reliable

Why your AI agent is flaky — and 7 rules that make it reliable

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4 min read
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