# Launch HN: HyperProbe (YC S26) – Agents that do read-only debugging in prod > Source: > Published: 2026-08-05 16:47:15+00:00 Every hour they spend in a war room is an hour they're not building. HyperProbe works the incident for them, alert to confirmed root cause before they've opened their laptop. If any of these sound familiar, keep reading. Incidents don't just break production. They break your roadmap. Your best engineers become your on-call team, every hour spent debugging is an hour not building. The hotfix was an educated guess. Nobody confirmed what actually caused it. If the same conditions appear next week, the same incident fires. The incident costs the same every minute it stays open. The fix takes mins. Finding takes hours, because the value that explains failure is never logged. HyperProbe makes your coding agents drop a read-only probe on the exact line where the problem happened in prod. It captures data your logs do not have, without redeployment or restarting the service. Every other tool reasons hard over data you already have. HyperProbe captures exact evidence. "Sync issues used to take us days to reproduce locally. HyperProbe caught the silent data mismatch in production on the first attempt." "During peak traffic, our listing service was black-boxing failures. HyperProbe let us inspect the live memory state during the spike. We fixed the race condition in the same hour." A probe is a **read-only, non-blocking snapshot** of the live variable state at a specific line in your running service. It fires on real traffic, captures the exact values at that moment, and disappears after capture. Your service never pauses. Zero user impact. The agent captures state. It cannot write memory or execute code. Every probe is logged in an immutable audit trail. Approval-gated until you trust it. Self-hosted or private VPC. Nothing leaves your environment. PII redacted at the agent before capture. Your security team defines what can be observed. The breakpoint fires asynchronously. Requests complete at full speed. Users experience nothing. Less than 1% overhead at 3,000 RPS. No exception. No alert. HyperProbe shines even with problems hardest to find. Returns 200 with the wrong body. The trace is green. The value was never logged. Stack trace names line 82. The cause is at line 18, or in a different file. Exception caught and swallowed. No alert. No error. The business metric just moves. Needs thread state at the exact moment of overlap. Nothing logs that. Vendor added a new field or status value. Your parser has no case for it. Payments failing, orders dropping. No exception anywhere in the stack. Not a feature walkthrough. This is exactly what happens when HyperProbe works an incident on your behalf. PagerDuty fires. GET /api/orders/{id}/status is returning 500 for nearly a quarter of requests. 847 failures in the last 10 minutes. No exception in the logs. HyperProbe reads the distributed traces and follows the failure chain. Order service is healthy. Payment service downstream is returning 404. Payments exist in the payment gateway but are not in the system. Payments exist in the payment gateway. Not found in the system. A write failed silently somewhere upstream. HyperProbe identifies payments are recorded when the payment gateway calls a webhook. A virtual breakpoint placed on the webhook handler at /src/api/webhooks.ts line 78. No redeploy. Service keeps running. Gateway is sending PENDING. The code has no case for it. Idempotency check marks payment as processed before confirming state. Payment never written to DB. No exception fires. Payment gateway started sending PENDING, a status your code never handled. Idempotency key written before state is checked. Payment marked processed, never recorded. Payment gateway started sending PENDING, a status your code never handled. Idempotency key written before state is checked. Payment marked processed, never recorded. Your best engineers should not be your on-call team. HyperProbe handles the investigation so they can go back to building. Probes and captures are unlimited on every plan. You should never hit a wall in the middle of an incident. Install the SDK and see a real capture the same afternoon. For teams running real production traffic who want the whole stack instrumented, not one service. For teams whose security review has to sign off before anything touches production. First incident we work with you is free · Cancel any month · No seat counts · No host counts · No capture limits If you don't, we're probably not the right fit yet. If you do, let's talk. If you have a specific memory of that night, HyperProbe is built for you. The data you needed was never in the logs. You grepped, guessed, redeployed, and hoped. It does not have to work that way. When prod breaks, your most expensive hire gets paged to do work a machine should do. Every night on-call is a night they resent. And your best people have options. Without the exact variable state at the moment of failure, every fix is a guess. Guesses hold until they don't. HyperProbe confirms root cause so the fix is final, not deferred. 30 minutes. Your service. Your incident. You'll see a confirmed root cause before the call ends — or there's nothing more to discuss. Node.js · TypeScript · Java · Kotlin · Runs in your own infra · Up in 15 minutes