Adam Balee

Full-Stack Web Developer + SaaS founder
Building Sentinel (uptime monitoring)
15+ years web dev

[Adam Balee @adambalee]

I’ve spent the last year building Sentinel because I think “is it down?” should be answered before your customers have to ask.

It started as uptime monitoring.

It’s turned into something much bigger.

[Adam Balee @adambalee]

Well, this got more attention from Laravel developers than it did here 😆

My write-up about replacing Sentinel's PHP monitoring workers with Go made Laravel News' most-read list this week.

50+ Horizon workers → one Go process.

https://t.co/OIeHJQJM9X

[Adam Balee @adambalee]

Decided to try Claude Desktop again today after using Claude Code for the last year...

I'm a terminal junkie, but I'm so much more productive in the desktop app it's insane 🤯

[Adam Balee @adambalee]

The last of Sentinel's PHP monitoring edges went dark today.

All six regions now run on a single Go process each. The old edges were 16 GB servers running 50+ Horizon workers. The new probes use about 27 MB of RAM and hold a tighter 30-second cadence.

@laravel still decides what every result means. Go just does the checking.

Full write-up:
https://t.co/qWC0O8Jw72

[Adam Balee @adambalee]

I’ll believe SaaS is dead when you show me one person without a subscription.

[Adam Balee @adambalee]

@VotrubaT I went down a similar rabbit hole recently. Started moving Sentinel’s monitoring probes out of PHP and into Go. The difference in memory and resource usage was ridiculous.

PHP still runs the app. Go just turned out to be a much better fit for the stuff doing the actual checking.

[Adam Balee @adambalee]

@MythThrazz 😂 that might be the most 2026 answer possible

[Adam Balee @adambalee]

@MythThrazz Haha, I knew that answer was coming 😅 What are you using for the watchers?

[Adam Balee @adambalee]

@MythThrazz Nice. So you’re already doing multi-region confirmation yourself. How much of the monitoring stack did you end up building?

[Adam Balee @adambalee]

London and Chicago are live.

Sentinel now checks every site from 6 regions on every plan. Not “check from one place, then confirm somewhere else if it fails.” Every region. Every check.

14 is the goal.

https://t.co/Q0b2QmXcYF

[Adam Balee @adambalee]

@1nxnn__ @vangrid_io That’s the part that got me too. Suddenly an agent can verify something in the physical world, not just query another API.

[Adam Balee @adambalee]

Agents can now pay a person to go film a place for them. 🤯

@vangrid_io lets an agent post a bounty ($50–$5,000 USDC, escrowed). Someone walks the site with a phone, and the footage comes back with an on-chain stamp of when and where.

Coverage queries are $0.01 over x402 on Base or Arc. No account. No API key.

“Things agents can’t see” just became a physical location.

Sentinel is watching the endpoint from all regions.

https://t.co/qhbMLOjDTZ

[Adam Balee @adambalee]

@sheikhakash69 @vangrid_io Exactly. The timestamp + location proof is what makes the whole thing click.

[Adam Balee @adambalee]

🎉 Sentinel is going from 4 monitoring regions to 14 worldwide.

Chicago + London launch tomorrow. Next: Toronto, Tokyo, Mumbai, Sydney, São Paulo, Dubai, Johannesburg + Lagos. 🌎

Every region. Every check. Every plan.

And the wild part: 14 regions will cost about half what the original 4 did.

Global monitoring shouldn’t be an enterprise feature.

https://t.co/9NYr7Qv0N9

[Adam Balee @adambalee]

Agents can hit a Base RPC or a headless Chromium browser for the same $0.005.

@POKTnetwork’s Agentic Portal puts 115 services behind one machine-payable endpoint. No account. No API key. Pay with x402 on Base or MPP on Tempo.

Sentinel is seeing a valid 402 from four regions.

https://t.co/pSwUa1IECq

[Adam Balee @adambalee]

@MythThrazz @madsmadsdk @Sarahub_it @ThomasKanze You should add an x402 endpoint to this :)

[Adam Balee @adambalee]

@williamsba Seriously. I’ve wasted countless hours on proposals. Now I always talk about money up front. “It will cost between X and Y to work with me” is a great way to break through the “I don’t have a set budget” response.

[Adam Balee @adambalee]

@Concordium Fix the trust issue and we're no longer living in an AI bubble.

[Adam Balee @adambalee]

The barrier to entry has been completely obliterated.

The willingness to cross it is still the moat.