Build Your Own AI Agent CLI in 150 Lines

AI changes the economics of building Your Own AI Agent CLI in 150 Lines for small businesses — but only if you're specific about what you're automating and why. Here's a framework.

Where to keep a human in the loop

Anywhere the cost of a wrong action is high and reversibility is low. Customer-facing communications at scale, financial commitments, anything irreversible — those need a checkpoint.

The hidden cost of automation

Every automation you add is something you'll have to maintain when it breaks. Build it cheaply and disposably so the cost of changing it later is low.

What changes when AI is in the loop

AI lowers the floor on what's worth automating. Tasks that weren't economical to script — judgment-heavy email triage, content generation, customer Q&A — are now viable. The criteria above still apply.

What to automate first

Start with tasks that are high-volume and low-judgment. The combination produces the best ROI per hour invested. Save the high-judgment work for yourself — that's where you actually create value.

Useful questions to ask yourself

Three questions worth journaling on: what would I do if I had to produce a result in two weeks instead of two months? What am I currently doing that nobody would notice if I stopped? Where am I spending money or time as a substitute for thinking? The answers usually point at the next move.

What changes at different stages

The right move at year one isn't the right move at year three. Early-stage businesses should err on the side of doing less, more directly. Mid-stage businesses benefit from systematizing what worked. Later-stage businesses need to actively prune what stopped working. Match the move to the stage.

Where most teams get stuck

The most common stalling point isn't the work itself — it's the moment between deciding what to do and actually starting. Block 90 minutes on a Thursday, ship the smallest possible version, and let the next week's data tell you what to do next. Momentum compounds; deliberation often doesn't.

Where fivedaylaunch fits

fivedaylaunch builds the website, web app, or mobile app that supports work like this — $799 in 5 days for sites, $2,499 in 10 days for web apps. AI builds it; humans review every detail; you own the code and the domain. Worth a look if a polished launch is on your list.

Pricing across tiers is at fivedaylaunch.com/pricing. If a 15-minute conversation would help clarify which tier fits, we're happy to have it.