Live schema monitoring

Catch schema drift before your stack breaks

DriftGuard snapshots REST APIs and MCP tool catalogs on a schedule, classifies every change, and pages you on breaking diffs — not after production finds out.

  • 50 watches on Pro with checks every 30 minutes
  • MCP-native — track tools/list schema changes
  • Breaking-only alerts via Slack, PagerDuty & webhooks
  • Global edge checks with animated regional monitor arcs
Start free trial → See live demo
✓ 1 endpoint full Pro trial ✓ Open-source MCP + CLI ✓ From $39/mo hosted
10 regions 186 checks / 24h 2 breaking arcs
CHECK · stripe-webhooks · SF · 200 OK

Catch schema drift before your users do — monitor every dependency type.

📋 API monitoring REST & OpenAPI schema watches on a schedule Learn more → 🔌 MCP monitoring tools/list catalog drift for agent stacks Learn more → ↯ Drift detection Breaking, warning & info classified diffs Learn more → 🔔 Alerts & routing Slack, PagerDuty, webhooks & Jira Learn more → ⚠ Incident loop Ack, resolve & auto-clear on Team Learn more → 🌍 Global checks Edge snapshots from 10+ regions Learn more →

Monitor the APIs & MCP servers your agents depend on

💳 Stripe 🐙 GitHub 🔌 MCP servers ☁️ OpenAPI 💬 Slack alerts 📟 PagerDuty
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Pro watches
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Team watches
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Fastest checks
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Severity levels
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Audit retention
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Alert channels
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Export rows (Pro)
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History bars / watch

See the console in action

Scroll through the views your on-call team uses every day.

Overview
Watches
Incidents
Drift diff
Integrations
Monitor fleet

Every dependency, one uptime-style row

REST APIs and MCP servers in a single watch list — status dots, sparkline history, and breaking counts at a glance.

  • 5-minute to daily check intervals by plan
  • Per-watch activity log and drift timeline
  • Catalog templates for Stripe, GitHub, and more
Open demo console →
Classified diffs

Breaking, warning, and info — not raw JSON noise

Every snapshot diff is labeled so engineers know whether to page on-call or just log the change.

  • Required field removed → breaking
  • New optional param → warning
  • Description text change → info
Incident loop

From drift detection to ack and resolve

Open incidents when checks fail or breaking drift lands. Acknowledge, investigate, resolve — or auto-resolve when drift clears on Team.

  • Check failures and schema drift in one timeline
  • PagerDuty and Slack wired to breaking-only
  • 365-day audit trail on Team
Alert routing

Plug into Slack, PagerDuty, Jira, and webhooks

Configure channels per watch or team-wide. Delivery stats and last-24h success rates in the integrations hub.

  • Breaking-only filters reduce alert fatigue
  • Webhook payloads include full drift context
  • MCP client for offline diff in Cursor
See all integrations →

Who it's for

Teams monitoring live dependencies — not static specs in CI.

🤖

Agent builders

MCP tool schema drift before agents break in prod.

🏗

Platform teams

200 watches, 5-min checks, year-long audit trails.

🔌

API consumers

Stripe, GitHub, Twilio — vendor APIs you don't control.

🛡

On-call engineers

Breaking-only alerts via Slack, PagerDuty, webhooks.

📦

Indie devs

Self-host free or trial one endpoint with full Pro.

📋

Compliance

Signed audit export and CSV drift history on Team.

vs CI diff toolsWatches live endpoints you consume, not repos you own.
vs uptime monitorsDetects schema shape changes, not just HTTP 200.
vs manual checksScheduled snapshots with classified breaking/warn/info.
vs raw JSON diffIncident loop, ack/resolve, and alert routing built in.

Built for the MCP era

MCP tool catalogs, OpenAPI specs, and live REST — monitored the same way.

MCP-native

Track tools/list schema changes before agents break.

Activity log

Checks, drift, and alert delivery in one stream.

Classified diffs

Breaking / warning / info on every change.

Integrations hub

Slack, PagerDuty, webhooks, and Jira.

Up and running in minutes

Three steps from signup to your first breaking alert.

1

Add a watch

Paste any HTTPS API or MCP endpoint. Import from catalog or mcp.json.

2

We snapshot & diff

Scheduled checks capture schema shape and compare against the last snapshot.

3
🔔

Alert on breaking

Webhooks fire on breaking drift. Acknowledge and resolve incidents from the console.

Plug into your stack

Route drift alerts wherever your team already lives.

💬

Slack

Incoming webhooks on breaking changes

🔗

Webhook

HTTPS POST with full drift payload

📟

PagerDuty

Incidents with auto-resolve on clear

🎫

Jira

Automation webhooks for ticketing

📋

Activity log

Checks, drift, alerts in one timeline

📊

Export API

CSV/JSON drift history for dashboards

🔑

REST API

Full programmatic watch management

🧩

MCP client

Offline diff in Cursor / Claude

Simple, transparent pricing

Self-host free forever, or let us run the watches.

Open source

Self-host

$0
  • Local JSON diff + MCP
  • Cursor / Claude integration
  • CLI for CI pipelines
Most popular

Pro

$39/mo
  • 50 watches · 30-min checks
  • Webhooks + Slack alerts
  • 90-day history + export
Platform teams

Team

$99/mo
  • 200 watches · 5-min checks
  • PagerDuty + audit export
  • 365-day retention

Stop finding out from production

Start with one endpoint on a full Pro trial — no credit card. Or explore the demo console with sample data.

Start monitoring free → Try demo console See all features