Sentry

Error tracking + tracing

Free tier + paidMonitoring & error trackingsentry.io

What it is

The default error-monitoring tool for web and mobile, capturing exceptions with full stack traces, source maps, release tagging and breadcrumbs, plus tracing, logs and session replay. It is licensed under the Functional Source License, which converts to Apache 2.0 after two years, and is self-hostable via Docker Compose.

Why it earns a slot

One wizard command wires it into a Next.js app and you stop learning about production breakage from angry users; the source-mapped stack trace usually points straight at the offending line.

Know before you commit

5K errors/month sounds generous until one crash loop burns it in an hour, so turn on spike protection and inbound filters early. Self-hosting needs 4 CPUs and 16GB RAM plus 16GB swap, and loses spike protection and the Seer AI features.

Getting started

npx @sentry/wizard@latest -i nextjs

Field notes

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Field check

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Pricing snapshot

Free Developer: 5K errors, 5M spans, 50 replays, 5GB logs/mo, 30-day retention, 1 user. Team $26/mo with 50K errors. Business $80/mo.

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate Sentry (https://sentry.io) for this project, then use it only if it fits what we are already building.
Context: Error tracking + tracing. The default error-monitoring tool for web and mobile, capturing exceptions with full stack traces, source maps, release tagging and breadcrumbs, plus tracing, logs and session replay. It is licensed under the Functional Source License, which converts to Apache 2.0 after two years, and is self-hostable via Docker Compose.
Reviewer notes (general, not written for this codebase): One wizard command wires it into a Next.js app and you stop learning about production breakage from angry users; the source-mapped stack trace usually points straight at the offending line.
Watch out for: 5K errors/month sounds generous until one crash loop burns it in an hour, so turn on spike protection and inbound filters early. Self-hosting needs 4 CPUs and 16GB RAM plus 16GB swap, and loses spike protection and the Seer AI features.
Pricing: Free Developer: 5K errors, 5M spans, 50 replays, 5GB logs/mo, 30-day retention, 1 user. Team $26/mo with 50K errors. Business $80/mo.
Setup: npx @sentry/wizard@latest -i nextjs
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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Neighbourhood

How Sentry sits against the rest of the atlas — swaps, companions and the tools builders actually save alongside it.

Instead of thisHighlight.io Axiom Better Stack BugSnag (Insight Hub)Checkly Cronitor Datadog Grafana Cloud

Named in the wiringSentry MCP Factory

Also in Monitoring & error tracking

Axiom

axiom.co

Log and event data platform

Free tier + paidMonitoring & error tracking

Free Personal: 500GB ingest/mo, 25GB storage, 30-day retention, 10 GB-hours query. Axiom Cloud $25/mo platform fee including 1TB ingest, 100GB storage and 100 GB-hours.

Open dossier

Better Stack

betterstack.com

Uptime, logs and on-call

Free tier + paidMonitoring & error tracking

Free: 10 monitors and heartbeats, 1 status page, 3GB logs and 3GB traces at 3-day retention, 30GB metrics. Paid from $25/mo annual for 50 extra monitors or the Nano telemetry bundle.

Open dossier

BugSnag (Insight Hub)

bugsnag.com

Error monitoring + stability scores

Free tier + paidMonitoring & error tracking

Free: 7,500 events and 1M spans/mo, 7-day retention, 1 user. Select from about $20/mo covering 50K to 3M events with 60-day retention.

Open dossier

Checkly

checklyhq.com

Playwright synthetic monitoring

Free tier + paidMonitoring & error tracking

Free Hobby: 10K API and 1K browser check runs/mo, 7-day raw retention. Starter $24/mo. Team $64/mo ($51.20 annual) with 100K API and 12K browser runs.

Open dossier