Introducing Depify: API Monitoring for the Modern Stack

Every modern application is built on APIs. Your payment flow depends on Stripe. Your notifications go through Twilio. Your email delivery runs on SendGrid. Your authentication might involve Auth0, your analytics pipe through Segment, and your search is powered by Algolia. On a typical day, a mid-size SaaS product talks to ten or more external services.

And yet, most teams have zero visibility into what those APIs are actually doing.

The Problem We Set Out to Solve

We have all been there. A customer reports that sign-ups are broken. After an hour of debugging, you discover that a third-party identity provider silently changed their token response format. Or maybe your webhook endpoint has been returning 500 errors for three days, but nobody noticed because the logs were buried in a sea of noise.

The tools that exist today force you into a painful trade-off. You can use an uptime monitor like Pingdom or UptimeRobot, but they only tell you if an endpoint is up or down — not whether the response body has changed shape. You can set up webhook debugging with something like ngrok or RequestBin, but those are point-in-time tools that do not persist. And if you want feature flags, you are looking at a separate product entirely — often costing $300 or more per month.

"We were using four different tools to do what should have been one platform's job. And we were still getting surprised by API changes in production."

That frustration is why we built Depify.

One Platform, Four Modules

Depify brings together everything you need for API reliability into a single, unified platform:

• API Monitor — Automated uptime and performance monitoring with configurable check intervals (down to 30 seconds), multi-region checks, and instant alerting via Slack, email, or webhooks. Track P50, P90, P95, and P99 latency percentiles over time.
• Webhook Debugger — Capture, inspect, and replay incoming and outgoing webhooks in real-time. See the full request and response cycle with headers, bodies, and timing. No more console.log debugging.
• Feature Flags — Boolean and multivariate flags with percentage rollouts, user targeting rules, and lightweight SDKs for both server-side and client-side applications. Ship features safely without a separate subscription.
• API Intelligence — This is where Depify truly stands apart. Our AI-powered engine continuously analyzes API responses to detect schema drifts, breaking changes, anomalies, and behavioral shifts — before they break your application.

What Makes Depify Different

Language-agnostic by design. Depify works with any stack. Whether you are running a Rails monolith, a Node.js microservices architecture, a Django application, or a Go API gateway, our monitoring is completely language-agnostic. You add endpoint URLs — we handle the rest.

Zero-config proxy mode. For teams that want deeper visibility, our transparent HTTP proxy captures all outgoing API traffic from your application without any code changes. Point your environment's HTTP_PROXY variable at Depify, and every external API call is automatically logged, analyzed, and monitored. No SDK integration required.

AI-powered analysis. Traditional monitors can tell you if a response status code changed from 200 to 500. Depify goes further. Our intelligence engine detects subtle changes like a field type changing from string to integer, a new required field appearing, a nested object restructuring, or a response time gradually increasing over days. These are the changes that cause silent failures in production.

Built for developers, priced for startups. We believe API reliability tools should not be enterprise-only luxuries. Depify starts with a generous free tier (5 endpoints, 5-minute intervals) and our Pro plan includes everything most teams need at a fraction of what competitors charge.

Getting Started in Three Steps

We designed Depify to get you from sign-up to your first alert in under five minutes:

• Step 1: Sign up. Create your account with just an email address. No credit card required for the free tier.
• Step 2: Add an endpoint. Enter the URL of any API endpoint you want to monitor. Configure the check interval, expected status code, and alert channels.
• Step 3: Get alerts. Depify immediately starts monitoring and will notify you the moment something changes — whether it is downtime, latency spikes, or schema drift.

The entire setup takes less than five minutes. No agents to install, no infrastructure to manage, no configuration files to write.

What is Next

We are just getting started. Here is a preview of what is on our roadmap:

• Custom assertions — Write rules against response bodies using JSONPath expressions to validate specific fields and values.
• Team collaboration — Shared dashboards, role-based access control, and audit logs for team workspaces.
• API dependency mapping — Automatic visualization of your application's complete API dependency graph.
• Historical trend analysis — Long-term performance trends and regression detection across all your monitored endpoints.
• More integrations — PagerDuty, Opsgenie, Microsoft Teams, and custom webhook destinations for alerts.

We built Depify because we needed it ourselves. Every engineer who has been woken up at 2 AM by a silent API change deserves better tools. We hope you will give it a try.