DeepTracer's AI agent watches your app 24/7 — catches crashes in API routes, Server Components, and edge functions, then writes a plain-English investigation with the exact fix. Not just a stack trace.
session is null when users navigate directly to
/checkout without a valid cookie. Your page accesses
session.user.id on line 47 without a null check — started failing
after auth middleware was removed in the 14:18 deploy.
DeepTracer watches every layer of your app — not just uncaught exceptions. When something breaks, you get the plain-English reason and the exact line to fix.
customerId is undefined because
req.headers.get('x-user-id') returns null — the header name was
changed to x-uid in your 3:47pm frontend deploy
but the API handler wasn't updated.
Next.js ISR is regenerating this page server-side with
no active session — getServerSession() returns null
during background revalidation. Add
export const dynamic = 'force-dynamic' to prevent cached renders
without a session.
Your middleware imports bcrypt which uses Node.js
crypto — unavailable on Edge Runtime. This is blocking
every route on your app. Replace with jose for JWT operations
or move auth checks to a regular API route.
No try/catch in submitContactForm — Next.js converts
this into a generic "Something went wrong" users see with no
context. Wrap in try/catch and return
{ error: 'Email already registered' } for a specific message.
Start with the Vercel Log Drain for instant coverage — no code changes at all. Or install the SDK for full-depth telemetry including API traces and LLM costs.
No SDK. No code changes. Connect your Vercel project in settings and DeepTracer starts receiving every log, error, and edge function crash instantly.
Deeper telemetry. The SDK adds request traces, LLM usage tracking, custom events, and distributed tracing on top of everything the drain provides.
Vercel logs show you something broke. DeepTracer tells you why, which deploy caused it, and exactly what to change.
customerId is undefined because
req.headers.get('x-user-id') returns null.
The header name changed to x-uid in the
14:18 frontend deploy — the API handler
wasn't updated to match.
Vercel logs are raw output. DeepTracer is the explanation. · Start free — see the difference in 5 minutes →
One flat price per workspace. No per-host fees, no event overage surprises, no sales call. Cancel any time.
Your agent sleeps until you wake it up. Perfect for side projects getting started.
Get Started — Free ForeverYour agent never sleeps. Monitors 24/7, investigates automatically, alerts you before users notice.
Start Free Trial — 14 DaysEvent overages billed at $0.50 / 100K — we never cut off your monitoring. Full pricing details →
instrumentation.ts hook (stable in Next.js 14.1+) for zero-config setup.
Edge Runtime, Middleware, Server Components, Server Actions, and Route Handlers are all covered.
Add DeepTracer in under 5 minutes. Connect your Vercel project or install the SDK — your AI agent starts monitoring immediately. Free forever. No credit card.