FlareCanary is unclaimed —

FlareCanary

Know when APIs change before your code breaks·flarecanary.com

FlareCanary is an API schema drift monitoring service that watches third-party API endpoints and alerts teams when response schemas change, before those changes break production code. It also tracks uptime, response times, and SSL certificate expiry, and can monitor Model Context Protocol (MCP) servers for AI agent tool changes. The platform offers alerting via email and webhook, public status pages, and team/role-based access.

What it's for

Monitor third-party REST API endpoints for schema driftDetect breaking API changes before they affect production codeTrack SSL certificate expiry on monitored endpointsMonitor uptime and response times of dependent APIsMonitor MCP servers for tool catalog and schema changesAlert teams via email or webhook when drift or issues occurShare API health via public status pagesOrganize and manage monitored endpoints across teams with role-based access

Features 20

Configurable polling intervals per endpoint
Data export (CSV/JSON) for drift and alert history
Deep nested comparison with dot-notation change paths
Demo endpoint with rotating schema for onboarding
Drift event lifecycle (new, acknowledged, resolved)
Email and webhook alert destinations with cooldown/resolution notifications
Endpoint folders and tagging
Endpoint library of popular public APIs
MCP server monitoring: tool schema tracking, fleet health, version drift detection
Metric alert rules (response time, status code, SSL expiry, response size, availability)
Multi-org support with role-based access (admin/editor/viewer)
Public status pages with custom branding
Response time charts with p50/p95/p99 percentiles
RESTful API with API key authentication
Schema drift detection with severity classification (info/warning/breaking)
Smart deduplication of shared endpoint monitoring
SSL certificate expiry monitoring and classification
Status code tracking and transition monitoring
Structural schema inference from JSON responses
Uptime tracking with 30-day uptime bars

At a glance

free tierAPI

TypeWeb app

DeploymentCloud

PlatformsWeb

Fordevelopers, teams shipping AI agents, teams depending on third-party APIs

CompanyFlareCanary

Integrations

StripeGitHubTwilioSalesforceSlackHubSpotShopifySendGrid

Resources

Docs

Pricing

All plans include SSL monitoring, schema drift detection, and email alerts. Metric alert rules and status pages available on Starter and above. Free plan requires no credit card.

FreeFree

5 endpoints, Daily checks, Schema drift alerts, SSL monitoring, Email alerts, 7-day history

5 endpoints, daily checks, 7-day history

Starter$19/mo

Marked as 'Most Popular'

25 endpoints, hourly checks, 30-day history

Pro$49/mo

100 endpoints, 15-min checks, Metric alert rules, Status pages, Email & webhook alerts, 90-day history

100 endpoints, 15-min checks, 90-day history

Startup$199/mo

llms.txt states 5-minute polling for this plan while the pricing page states 15-minute checks — discrepancy noted.

250 endpoints, 15-minute checks, 180-day history, up to 5 seats

Enterprise$499/mo

llms.txt states 1-minute polling for this plan while the pricing page states 15-minute checks — discrepancy noted.

500 endpoints, 15-minute checks, 365-day history, up to 25 seats