Now detecting drift in production

Your APIs are changing.
You just don't know it yet.

PhantomAPI watches HTTP traffic at the Linux kernel level using eBPF. No code changes. No proxies. No agents. Just attach to any process and see every silent structural change before it breaks downstream.

Try for Free See How It Works →

phantomapi — drift detection

$ sudo phantomapi watch --pid 4829 --min-obs 10

⠿ Attaching eBPF tracepoints to PID 4829...

✓ Hooked: sys_enter_write, sys_enter_sendto, sys_enter_read

✓ Hooked: SSL_read, SSL_write (TLS interception active)

⠿ Building baseline from live traffic...

✓ GET /api/orders — 42 observations — stable

✓ GET /api/users — 38 observations — stable

▲ DRIFT DETECTED GET /api/orders

missing_field data.delivery_date — was present in baseline HIGH

new_field data.shipped_by — not in baseline MEDIUM

type_change data.total — was number, now string HIGH

→ Drift event posted to dashboard

How it works

Three lines. Zero friction.

PhantomAPI hooks into the Linux kernel's syscall layer. Your app doesn't know it's there. Your deployment doesn't change. You just start seeing drift.

Step 01

⚡

Install in seconds

One curl command downloads the binary. No dependencies, no containers, no sidecars. Just a single static binary on your Linux server.

Step 02

👁

Point at any process

Give it a PID. PhantomAPI attaches eBPF tracepoints to that process's syscalls — intercepting HTTP/HTTPS traffic at the kernel boundary, invisible to the application.

Step 03

🎯

Drift alerts fire

It learns the API's structural fingerprint, then watches for changes: missing fields, type changes, new fields, null frequency shifts. Alerts hit your dashboard in real time.

Capabilities

What PhantomAPI catches

Four categories of structural drift, detected automatically from live traffic with zero configuration.

🚨

Missing Fields

A field your consumers depend on silently disappears from a response. PhantomAPI flags it immediately with a High risk alert before anyone's integration breaks.

🔀

Type Changes

A price field that was a number is now a string. A boolean becomes null. These silent type mutations are the #1 cause of downstream parsing failures.

🆕

New Fields

New fields appearing in responses often signal an unannounced API version change. PhantomAPI tracks them as Medium risk — something changed, and you should know.

📊

Null Frequency Shifts

A field that was always populated starts coming back null 40% of the time. Subtle, hard to catch manually — but PhantomAPI tracks frequency shifts over time.

Try it free

See it work on your machine

No account. No credit card. Just enter your email and we'll send you the install instructions. You'll be detecting drift in under 60 seconds.

Pricing

Simple, transparent pricing

Free tier forever. Upgrade to PhantomWatch for unlimited services, dashboard, and alerts.

Detect drift in 60 seconds

Drop your email and we'll send you the one-line install command. No signup flow, no credit card — just attach PhantomAPI to any process and see every silent API change.

No credit card. No account required. Install command sent straight to your inbox.

Your APIs are changing.You just don't know it yet.