Nexus Guard

Monitoring for indie hackers and solo founders

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September 18, 2026 I lost $2,400 to a silent Stripe failure — so I built Nexus Guard

Have you ever checked your Stripe dashboard and realized revenue dropped 40%… and you had NO IDEA why?

That happened to me. My webhook silently stopped firing. Users got errors at checkout. My site showed "200 OK." But behind the scenes, I was bleeding subscribers for three days before I noticed.

$2,400 in lost revenue. Gone.

I talked to 50+ solo founders and heard the same story:

"My sitemap returned 404 for a week before I noticed."

"A build update stripped all my meta tags — traffic dropped 60%."

"My payment provider changed their API, and I only found out from a customer email."

Existing tools don't help solo founders. PagerDuty, Datadog, Grafana — they're built for teams with DevOps. They false-positive constantly. They're expensive.

What solo founders actually need:

"Is my checkout working?" — answered in real-time
"Did my SEO just drop?" — alerted immediately
"Is my API still returning the right responses?" — caught on deploy

So I built Nexus Guard 🛡️

It monitors your side project every 60 seconds for:

Uptime — Global checks, no false positives
SEO health — Meta tags, sitemaps, 404 spikes
Checkout flows — Real transaction simulations
API integrity — Latency, errors, response shape

When something breaks, you get an alert within 60 seconds.

Pricing: $19/mo per project. Setup: 5 minutes. No code changes. Any stack.

I'm looking for 10 beta testers. 3 months free + lifetime 20% discount.

Join the waitlist: https://buy.stripe.com/dRmdR9dXy1w63OK5KA8N200

10 Comments

  1. 1
    Talking to 50+ founders first makes sense. Most build the tool first, then look for the problem.
  2. 1
    Does Nexus Guard make silent payment/infra failures obvious before a founder loses another day of revenue? Happy to send a totally free first-impression video if useful.
  3. 1

    the simple does exist it's called healthchecks io

    1. 1
      You're right — Healthchecks.io solves the heartbeat/cron-job problem very well. Nexus Guard is focused on a different layer: detecting when a business is technically “up,” but something revenue-critical, like checkout or payments, has silently stopped working. That's the gap I'm validating with the beta.
      1. 1
        healthchecks io /signaling_failures/ docs/attaching_logs/ for enterprise level: Healthchecks.io supports exporting metrics and check statuses to Prometheus, for use with Grafana.
  4. 1

    The $2,400 loss and 50+ conversations make the problem credible. Which monitoring failure are beta users most willing to pay to prevent?

    1. 1
      So far, checkout/payment failures seem to resonate the most — especially when everything looks “up” but revenue has quietly stopped. That’s actually one of the things I’m validating with the beta: whether founders will pay specifically to prevent revenue-impacting failures rather than just monitor uptime.
      1. 1

        The revenue-impacting failure angle is the clearest paid-use signal so far. If you’re open to it, what’s the best email to reach you on?

        1. 1
          Absolutely — you can reach me at nexusguard.team@gmail.com. Happy to chat and hear more about what you're seeing around revenue-impacting failures.
          1. 1

            Thanks! I’ve just sent it over.

            Looking forward to hearing your thoughts whenever you have a chance.

About

I built Nexus Guard because I know how painful it is to discover a problem after it has already cost you customers and revenue. A checkout can fail, an API can break, or SEO can suddenly drop.