Launch HN: HyperProbe (YC S26) – Agents that do read-only debugging in prod

# HyperProbe — Your 24/7 AI On-Call Agent Source: [https://www.hyperprobe.co/](https://www.hyperprobe.co/) [HyperProbe](https://www.hyperprobe.co/)Y Backed by Y Combinator · AI ON\-CALL AGENT 02:47 AM ·order\-service·847 failures / 10 min· @priya paged TRIGGERED ## Your engineers didn't join to be *on call\.* 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\. Node\.js · TypeScript · Java · Python · Works with Cursor, Claude Code, Codex, Opencode 01 ### Your best engineers are on\-call\. Product roadmap slips\. 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\. 02 ### You "fixed" the incident\. You have no idea how\. The hotfix was an educated guess\. Nobody confirmed what actually caused it\. If the same conditions appear next week, the same incident fires\. 03 ### The fix takes 10 minutes\. Finding it takes hours\. 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\. The solution## The AI that handles the incident so your engineers don't have to\. 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\. 3 to 4 hrs→<10 minTime to root cause 3 to 4→0Redeployments per incident 2 to 3→0Senior engineers on the investigation "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\." Bhagwan Bansal SDE, Housing\.com How it works## What happens when an incident fires\. 01 Alert Picks up the page from PagerDuty, Datadog, or Slack automatically\. 02 Plan Reads logs and traces, to automatically locate the file, line with the issue, and plan debugging flow\. 03 Probe Logs not enough? Places a read\-only virtual breakpoint on the suspect line\. No redeploy\. 04 Capture Breakpoint fires on live traffic\. Exact variable state captured at that line\. 05 Confirm Diagnosis verified against real evidence\. Confirmed RCA delivered\. What is a probe? 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\. #### Read\-only\. Always\. 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\. #### Runs inside your infra\. Self\-hosted or private VPC\. Nothing leaves your environment\. PII redacted at the agent before capture\. Your security team defines what can be observed\. #### Zero thread pause\. The breakpoint fires asynchronously\. Requests complete at full speed\. Users experience nothing\. Less than 1% overhead at 3,000 RPS\. What we cover## Some failures never page you\. No exception\. No alert\. HyperProbe shines even with problems hardest to find\. #### Silent failures Returns 200 with the wrong body\. The trace is green\. The value was never logged\. #### Exceptions far from cause Stack trace names line 82\. The cause is at line 18, or in a different file\. #### Wrong behaviour, nothing thrown Exception caught and swallowed\. No alert\. No error\. The business metric just moves\. #### Race and duplicate processing Needs thread state at the exact moment of overlap\. Nothing logs that\. #### Third\-party contract drift Vendor added a new field or status value\. Your parser has no case for it\. #### Business metric drops Payments failing, orders dropping\. No exception anywhere in the stack\. Shipping this month:Memory leak diagnosis · OOM root cause · CPU spike isolation · Latency spike tracing One real incident, start to finish## Alert to root cause\. No war rooms\. Not a feature walkthrough\. This is exactly what happens when HyperProbe works an incident on your behalf\. 02:47 AMAlert fires ### High error rate on order status\. 23% of requests failing\. 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\. PagerDuty alertHIGH ERROR RATE· order\-service GET /api/orders/\{id\}/status · 500 · 23% error rate 847 failures / 10 min · threshold exceeded 02:48 AMScouting ### HyperProbe follows the trace chain\. Identifies a silent write failure upstream\. 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\. Trace for failing requestGET /api/orders/\{id\}/status500 \| └──GET payment\-service/api/getPaymentsByOrder/\{orderId\}404 Payments exist in the payment gateway\. Not found in the system\. A write failed silently somewhere upstream\. 02:49 AMProbe placed ### HyperProbe places a virtual breakpoint on the webhook handler\. 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\. Probe activatedPOST /api/webhooks/payments file: /src/api/webhooks\.ts · line 78 Non\-blocking · Read\-only · No redeploy 02:50 AMBug found ### Snapshot captures live request at the exact moment the webhook fires\. 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\. Live snapshot · webhooks\.ts:78 · captured 02:50:14 UTCstatus="PENDING"← payment gateway sending this, no handler exists duplicate= null← first time seen, passes through db\.insert→ never called redis\.set→ called anyway, payment locked out permanently Payment gateway started sending PENDING, a status your code never handled\. Idempotency key written before state is checked\. Payment marked processed, never recorded\. 02:52 AMFix suggested ### Root cause confirmed\. Fix ready\. 5 minutes from alert\. Payment gateway started sending PENDING, a status your code never handled\. Idempotency key written before state is checked\. Payment marked processed, never recorded\. Before and after## The same incident\. Two realities\. Your best engineers should not be your on\-call team\. HyperProbe handles the investigation so they can go back to building\. Without HyperProbe 02:47 AM Alert fires\. Engineer paged\. 02:50 AM Stack trace points to line 82\. The variable that caused it was set several frames up, in a different file\. No log captures it there\. 03:10 AM Frame located\. Variable value not visible\. Adds a log line to capture it\. 03:40 AM CI/CD deploys\. 30 minutes gone\. Waiting for the condition to reproduce in production\. 04:15 AM First log visible\. Partial data\. Not enough\. Another log line\. Another 30\-minute deploy cycle\. 05:20 AM After 2 to 3 redeploy cycles, root cause confirmed\. 2 hours 33 minutes\. With HyperProbe 02:47 AM Alert fires\. HyperProbe picks it up\. 02:48 AM HyperProbe uses your coding agent to locate the exact frame where the probe should go\. All in background\. 02:49 AM HyperProbe activates a virtual breakpoint at that exact line\. No redeploy\. 02:53 AM Breakpoint fires safely at next request\. Exact variable value captured\. Service keeps running\. 02:56 AM Root cause confirmed\. 9 minutes from alert to evidence\-backed diagnosis\. 03:00 AM Engineer commits the fix\. Pricing## Priced per service\. Never per engineer\. Probes and captures are unlimited on every plan\. You should never hit a wall in the middle of an incident\. Free $0forever 1 service · managed cloud Install the SDK and see a real capture the same afternoon\. - 1 service - Unlimited probes and captures - Installs from a single agent prompt Most teams Professional $99per service per month $79 billed annually · 3 service minimum For teams running real production traffic who want the whole stack instrumented, not one service\. - Unlimited services - 30\-day capture history - Shared workspace and saved probes [Try Now](https://docs.hyperprobe.co/quickstart) Enterprise Custom Annual contract · volume pricing For teams whose security review has to sign off before anything touches production\. - Self\-hosted or private VPC - RBAC and approval gates - Custom PII redaction rules [Talk to us](https://calendly.com/shailendra-hyperprobe/30min) First incident we work with you is free · Cancel any month · No seat counts · No host counts · No capture limits [See full pricing and what is in each plan →](https://www.hyperprobe.co/pricing) This is built for you if ## You recognise any of these\. If you don't, we're probably not the right fit yet\. If you do, let's talk\. ### When did you last spend 2\-3 hours in a war room for something that turned out to be a one\-line fix? 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\. ### Your best engineers are your on\-call team, not your product team\. 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\. ### The same incident will happen again\. Because nothing confirmed why it happened the first time\. 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\. Start the POC## Let us work one*real incident* from your stack\. 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