Monitoring 1,000+ API endpoints live

Know When APIs Break.
Before Your Users Do.

Endpoint Tracker silently watches your external API dependencies and fires an alert the moment a response schema changes — field removed, type changed, new required field added. Catch breaking changes in minutes, not days.

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endpoint-tracker — drift detected

🔴 BREAKING 3 changes detected

POST https://api.stripe.com/v1/charges

Change	Field	Severity
removed	customer.email	BREAKING
retyped	amount	BREAKING
added	metadata.ip	INFO

The Problem

Silent API Changes Are Costing You Hours

External APIs change without warning. Fields disappear. Types shift. Your integration silently starts returning wrong data — and nobody notices until a customer complains.

Your integration breaks at 2AM

An upstream API removes a field. Your app starts returning null values. You find out when a customer complains — hours or days later. The root cause? An undocumented API change.

No versioning. No warning.

Most external APIs don't version properly. They change responses without deprecation notices, changelogs, or any heads-up to integrators. You're left guessing what changed and when.

Debugging takes forever

You spend hours diffing API responses manually, checking changelogs that don't exist, and trying to reproduce an issue that only appears in production. Time lost. Customers frustrated.

The Solution

Endpoint Tracker Watches APIs So You Don't Have To

Point it at any external API. We snapshot the response schema, track every change over time, and alert your team the moment something drifts.

Schema Snapshots

Every API response is analyzed and its schema fingerprinted. We store a full history of what the response looked like over time — field names, types, nullability, and structure — so you can see exactly when things changed.

Intelligent Diff Engine

Our diff engine classifies every change by severity: Breaking (field removed, type changed), Warning (nullability loosened), or Info (new optional field added). Not all changes are equal — we help you prioritize.

Instant Alerts

Get notified via email, Slack, or webhook the moment a breaking change is detected. Alerts include the full diff, severity score, affected fields, and a direct link to the change history timeline.

Setup

Up and Running in 5 Minutes

No SDKs. No agents. No code changes. Just add your endpoints and we handle the rest.

Sign Up Free

Create your account with just your email. No credit card. No sales call. No onboarding flow. Start in seconds.

Add Your Endpoints

Paste the URL of any external API you depend on. Add authentication headers if needed. Name it and save.

We Monitor Continuously

Endpoint Tracker polls your endpoints on your chosen schedule — every hour, 6hr, 12hr, or daily. Pro users get 15-minute intervals.

Get Alerted Instantly

The moment a schema changes, you get a detailed alert showing exactly what changed, what it was before, and the severity.

Live Examples

See Drift Detection in Action

Real examples of the alerts you'd receive when an upstream API changes its response schema.

🔴 BREAKING

Stripe API Change

GET https://api.stripe.com/v1/customers

Field customer.default_source was removed from response

Type of balance changed: number → string

⚡ Detected 2 minutes ago · 2 breaking changes

🟡 WARNING

GitHub API Change

GET https://api.github.com/repos/{owner}/{repo}

Field visibility is now nullable (was always string)

Field topics changed from required to optional

⚡ Detected 1 hour ago · 2 warnings

🟢 INFO

New Field Added

POST https://api.yourservice.com/webhooks

New field metadata.request_id added to response

New field metadata.region added (optional)

⚡ Detected 3 hours ago · 2 new fields

Features

Everything You Need to Monitor API Dependencies

Proxy Mode

Route requests through Endpoint Tracker to capture real traffic schemas automatically — no polling needed. Works with any HTTP client.

Drift History Timeline

Full timeline of every schema change with before/after diffs. 7 days on Starter, 90 days on Pro, 1 year on Enterprise. Export as CSV or JSON.

API Key Management

Generate, rotate, and revoke API keys per project. Scope keys to specific endpoints or workspaces. Full programmatic access to all features.

Team Workspaces

Invite your team. Organize endpoints by client or project in isolated workspaces. Enterprise gets role-based access: Admin, Developer, Viewer.

Multi-Channel Alerts

Email, Slack, PagerDuty, or any custom webhook. Alerts include full diffs, severity scores, and direct links to change history.

Instant Manual Checks

Don't want to wait for the next scheduled poll? Hit Check Now to run an immediate schema comparison against the latest snapshot.

Pricing

Simple, Transparent Pricing

Start free. Upgrade when you need more. No hidden fees. No usage surprises.

Starter

KES 0

Free forever

Perfect for solo developers and side projects. Full core functionality with generous limits.

3 endpoints
1 workspace
24hr check frequency
5 manual checks/day
7 day log history
Email alerts
1 API key
Slack/webhook alerts
Custom frequency
Team members

Start Free

Built for Every Developer Workflow

Agencies & Freelancers

Monitor APIs for multiple clients from one account. Separate workspaces keep client data completely isolated. Get alerted before your client does — protect your reputation.

Startups & SaaS Products

You depend on Stripe, Twilio, SendGrid and a dozen other APIs. One breaking change can take down your product. Know instantly when something drifts in your dependency stack.

Fintech & Payments

Payment APIs are critical. A field change in a Paystack or M-PESA response can silently corrupt transactions. Monitor every response shape change with sub-hour detection.

Platform Engineers

Add Endpoint Tracker to your internal toolchain. Use our REST API to automate monitoring as part of your CI/CD pipeline and deployment process. Full programmatic control.

FAQ

Frequently Asked Questions

How is Endpoint Tracker different from uptime monitors?

Uptime monitors tell you if an API is down. Endpoint Tracker tells you if the API response has changed shape — which is much harder to detect and just as dangerous. Your API can return 200 OK while silently returning different fields, wrong types, or missing required data. We catch exactly that.

Does it work with authenticated APIs?

Yes. You can add any headers including Authorization, API keys, or Bearer tokens. All stored headers are encrypted at rest using AES-256. We never log or expose your credentials.

What happens when a change is detected?

You receive an immediate alert via your configured channel (email, Slack, or webhook) with the full diff — what field changed, what the value type was before, what it is now, and a severity classification. Breaking changes trigger immediate alerts; info-level changes are batched in a daily digest.

Is my API response data stored?

No. We only store the response schema — field names and types — not the actual response data or values. Your API responses never touch our long-term storage. We analyze the structure and discard the payload immediately.

What APIs can I monitor?

Any HTTP/HTTPS API that returns JSON — REST APIs, webhooks, GraphQL endpoints (via POST), internal microservices, or third-party SaaS APIs. If it returns JSON, we can monitor it.

Do you have an API for programmatic access?

Yes. Every feature in the dashboard is available via our REST API. Authenticate with your API key and automate monitoring programmatically — add endpoints, trigger checks, retrieve diffs, and configure alerts all via API.

Can I use it as a proxy instead of polling?

Yes on Pro and Enterprise plans. Point your HTTP client at Endpoint Tracker instead of the upstream API and we capture schemas from real traffic automatically — no polling configuration needed.

Stop Finding Out From Your Users

Join developers who monitor their API dependencies proactively.
Free forever. No credit card required. Setup in 5 minutes.

Start Monitoring Free →

Questions? Email us at support@endpointtracker.com

Know When APIs Break. Before Your Users Do.