See every millisecond, not just the total
Local proxy captures DNS, TCP, TLS, TTFB, and download for every request. No agent to install, no APM to configure.
Launching soon
Lobe is almost here.
Local HTTP performance profiling for developers. Sign-ups and checkout are paused while we finalize launch. The site remains available so you can preview the product.
Get in touch
LOBEEvery slow request,
explained.
Lobe is the local performance layer for developers shipping fast. Route your dev backend through it — get answers, not dashboards.
brew install lobe/tap/lobemacOS · LinuxThen run
lobe capture <url>GET /api/users · phase breakdown
total342ms·ttfb280ms
TTFB blows past a 50ms loopback baseline. Likely slow DB query or missing index.
Features
Everything the CLI + web app do, free.
P50, P90, P99 over time
Route-scoped percentiles and a latency heatmap surface bimodal patterns — cache hit vs. miss, fast path vs. slow path — instantly.
Flags what shouldn't be that slow
Built-in loopback / LAN / remote baselines from Systems Performance. Cold and warm connections judged separately, so pooled requests aren't mistaken for impossibly fast ones.
Ship a Claude Code skill
lobe explain walks your session resource by resource and returns a ranked triage — top hypotheses about where time is going and why. Pair it with the shipped skill for hands-off use in Claude Code or Cursor.
How it works
Three commands from confused to diagnosed.
01
Capture
$ lobe capture http://localhost:3000Spins up a local proxy on 127.0.0.1:7878. Route your app or mobile client through it — every request gets its DNS, TCP, TLS, TTFB, and download phase recorded.
02
Diagnose
$ open http://localhost:3000 # in Lobe web UIPercentiles, latency heatmap, phase-breakdown per request, bimodal detection, and baseline anomalies — all rendered locally, no data leaves your machine.
03
Explain (optional AI)
$ lobe explain session.jsonWalks your session resource by resource — CPU, DB pool, network, upstream — and returns a ranked markdown report of what’s likely slowing you down. Bring your own Anthropic key, or use the bundled Claude Code / Cursor skill.
The mental model
How Lobe thinks.
Every request flows through the same subsystems — each named after a region of the brain that does the equivalent job. You’ll see them in your terminal as things happen.
Thalamus
The observation layer
Local proxy on 127.0.0.1:7878. Every request in, every phase timed, nothing lost. No agents to install.
Amygdala
The threshold guard
Grounded baselines fire the moment a request breaks what should be possible. Flagged in real time, not after the fact.
ExnerExner's area
The exporter
Sessions become portable JSON. Reports become portable markdown. Everything you diagnose is something you can share.
PFCPrefrontal cortex
The analyzer
lobe explain walks each anomalous request through a systematic triage. Ranked by impact.
Pro
Hippocampus
The memory
Sessions sync to your dashboard. Historical baselines compare across days. Regression alerts fire when a route slips.
Install
One command, then you’re capturing.
The Lobe CLI is a single Rust binary. Install it however you like — Homebrew on macOS/Linux, or a curl one-liner anywhere else. No runtimes, no daemons, no config file.
- Prebuilt binaries for macOS (Apple + Intel), Linux, and WSL
- Auto-updates via
lobe upgrade - No account required to use the CLI locally
brew install lobe/tap/lobemacOS · LinuxThen run
lobe capture <url>Grounded baselines
Where “slow” actually starts.
The thresholds below are the physical limits of the network — loopback, LAN, and WAN. Any request slower than these has a reason, and Lobe helps you find it.
loopback
TTFB ≤ 50ms
total ≤ 80ms
LAN
TTFB ≤ 100ms
total ≤ 200ms
remote
TTFB ≤ 500ms
total ≤ 1.5s
Pricing
Free forever. Pay when you want persistence.
Bring your own Anthropic key across free and Pro — no managed AI cost to you. Pro adds cloud storage; Team adds workflow integrations. Simple.
Free
Full CLI + web app, no account required.
$0
- Full CLI (capture, watch, probe)
- Full local web UI + every analytics panel
- lobe explain — bring your own Anthropic key
- Claude Code + Cursor skills
- Unlimited local sessions
Pro
Cloud persistence for serious solo devs.
$15/mo
- Everything in Free
- Cloud session storage — sync across devices
- Session library — tags, search, star
- Historical baselines + regression detection
- Email / Slack alerts on regression
Team
PR bot + team-shared workspace.
$30/seat/mo
- Everything in Pro
- GitHub PR bot — perf regression comments
- CI integration — fail on N% regression
- Team-shared session workspace
- Priority support
Enterprise
SSO, audit, private region.
Contact us
- Everything in Team
- SSO + SCIM
- Audit log
- Private cloud region
- Custom SLA
Get notified
Pro tier is landing soon.
Cloud session storage, historical baselines, and regression alerts are on deck. Drop your email and we’ll let you know when it’s ready.