Error tracking and analytics for AI agents
4 APIs compared on price, free tier, MCP support and real usage. Prices from the vendors' pricing pages, checked Oct 9, 2026.
| API | Free | Price | SDK downloads / wk | GitHub stars | MCP |
|---|---|---|---|---|---|
| Sentry Application monitoring platform for error tracking, tracing, and session replay. |
5,000 errors/month, 5GB logs, 5GB metrics,... | Free plan · paid from $26/mo | — | — | |
| PostHog Product analytics, session replay, feature flags, error tracking, and surveys platform. |
1M events, 5K session replays, 1M feature... | Free plan then Usage-based pricing per product (events, replays,... |
— | — | |
| Mixpanel Product intelligence platform with analytics, session replay, experiments, and feature flags. |
Up to 1M events/month, 10K session... | Free plan · paid from $120/mo | — | — | |
| GrowthBook Feature flagging, A/B testing, and experimentation platform for product teams. |
Up to 3 users, 1 project, unlimited feature... | Free plan · paid from $40/mo | — | — |
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