AppSignal is unclaimed —

AppSignal

Error tracking and performance monitoring that just works.·appsignal.com

AppSignal is an all-in-one application monitoring platform offering error tracking, performance monitoring, host monitoring, anomaly detection, uptime monitoring, log management, and metric dashboards. It supports native SDKs for Ruby, Elixir, Node.js, Python, PHP, and JavaScript, plus Go, Java, and Rust via OpenTelemetry. The product also offers an MCP Server that connects AI coding tools like Claude, Cursor, and Zed to production error, trace, and deploy data for AI-assisted debugging.

What it's for

Error tracking with backtraces and deploy correlationPerformance monitoring of slow queries and endpointsHost monitoring (CPU, disk, memory, network)Anomaly detection with alerting on metricsUptime monitoring with public status pagesLog search, live tail, and log-based alertingCron job and process monitoringDeploy tracking correlated with errorsAI-assisted debugging and fix generation via MCP integration with Claude, Cursor, or Zed

Features 18

AI-generated pull request fixes via MCP
Anomaly detection with default and custom alerts
Custom metrics and automated dashboards
Deploy tracking correlated with errors
Distributed tracing (beta)
Error tracking with backtraces and occurrence grouping
Host monitoring (CPU, disk I/O, memory, network)
Live tail log streaming
Log search & filter with saved queries
Log-based alerting
MCP Server for AI tools (Claude, Cursor, Zed)
Memory leak detection
OpenTelemetry-based instrumentation
Performance monitoring (response times, throughput, slow endpoints)
Process/cron job monitoring (check-ins)
Slow query and N+1 query detection
Trace-linked logs
Uptime monitoring with public status pages

At a glance

free tierfree trialAPI

TypeWeb app

DeploymentCloud

PlatformsWeb

Forstartups, growth companies, enterprises, open-source projects, humanitarian work

CompanyAppSignal · 2012

Integrations

SlackGitHubJiraLinearGitLabPagerDutyDiscordOpenTelemetryVercelKubernetesAWS CloudWatchClaudeCursorZedHatchbox

Complianceself-reported

GDPRHIPAAISO 27001

Resources

Pricing

Pricing page offers a currency toggle between EUR and USD and a Yearly/Monthly billing toggle, but only the yearly rate ($279/year, $23.25/month equivalent) is shown in the supplied text. Enterprise/Business features (SAML SSO, HIPAA, long-term log storage, US hosting) require contacting the Customer Success team for pricing.

Free planFree

Perfect for startups, hobby, or side-projects. Usage limits can be extended for free for open-source or humanitarian work.

50K requests/month, 1GB logging, 5-day retention

Paid plan$23.25/mo · billed annually

Price shown is billed yearly ($279/year, equivalent to $23.25/month). A monthly billing toggle exists on the pricing page but no separate month-to-month rate is shown.

250K requests/month, 1GB logging/month included