Sentrinel — Feature Matrix & Roadmap
Researched July 2026 against: Sentry, PostHog, Axiom, Better Stack, Highlight.io (now LaunchDarkly Observability), Langfuse, Helicone (maintenance mode since the Mintlify acquisition), Grafana + Prometheus, Datadog / New Relic, and the OpenTelemetry spec.
Two market signals worth remembering when scoping: Highlight.io was acquired and folded into LaunchDarkly, and Helicone is in maintenance mode — being an inline proxy or chasing every category is risky; a focused API-monitoring product with a shared ingest pipeline is the durable shape.
Capability matrix (✓ first-class · ◐ partial · – absent)
| Capability | Sentry | PostHog | Axiom | Better Stack | Langfuse | Grafana+Prom | Datadog/NR | Sentrinel today | Sentrinel target |
|---|---|---|---|---|---|---|---|---|---|
| Multi-tenant orgs + auth | ◐ | ✓ | ✓ | ✓ | ✓ | ◐ | ✓ | ✓ | ✓ |
| Endpoint/APM metrics (p50/p95/p99, Apdex) | ✓ | – | ◐ | ◐ | ◐ | ◐ | ✓ | ✓ | ✓ |
| Error grouping & stack traces | ✓ | ✓ | – | ◐ | – | – | ✓ | ✓ fingerprinted issues | ✓ |
| Request logs w/ headers & payloads | ◐ | – | ✓ | ✓ | – | ✓ | ✓ | ✓ | ✓ |
| Application logs correlated to requests | ◐ | – | ✓ | ✓ | – | ✓ | ✓ | ✓ | ✓ |
| Log search & live tail | ◐ | – | ✓ | ✓ | – | ✓ | ✓ | ✓ search + SSE tail | ✓ |
| Field/attribute explorer (log vocabulary) | – | – | ✓ | ◐ | – | – | ◐ | ✓ keys + top values, click to filter | ✓ |
| Breadcrumbs (trail leading to a failure) | ✓ | – | – | – | – | – | ✓ | ✓ logs+spans+outcome interleaved | ✓ |
| Issue assignment & ownership | ✓ | – | – | ◐ | – | – | ✓ | ✓ assign + filter by assignee | ✓ + ownership rules |
| Distributed tracing (OTLP ingest) | ✓ | – | ✓ | ◐ | ✓ | ✓ | ✓ | ✓ nested waterfall + OTLP | ✓ |
| Uptime / synthetic checks | ◐ | – | – | ✓ | – | ◐ | ✓ | ✓ (HTTP checks) | ✓ multi-region later |
| Cron / heartbeat monitoring | ✓ | – | – | ✓ | – | ◐ | ◐ | ✓ | ✓ |
| Alerting + notification channels | ✓ | ◐ | ✓ | ✓ | ◐ | ✓ | ✓ | ✓ Slack/Discord/webhook | |
| SLOs & error budgets | – | – | ◐ | ◐ | – | ✓ | ✓ | ✓ | ✓ |
| Consumers / API-client analytics | – | ◐ | ◐ | – | ◐ | – | ◐ | ✓ | ✓ |
| Host metrics (CPU/RAM) | – | – | ◐ | ✓ | – | ✓ | ✓ | ✓ | ✓ |
| Custom dashboards (saved charts) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ composed in Settings, rendered at /dashboards | ✓ |
| Release / deploy tracking | ✓ | ◐ | – | – | – | ◐ | ✓ | ✓ deploy markers | ✓ |
| LLM call tracing & cost | ◐ | ✓ | – | – | ✓ | – | ✓ | ✓ priced GenAI spans | ✓ |
| SQL access to telemetry | ◐ | ✓ | ✓ | ✓ | ◐ | ✓ | ✓ | ◐ guarded, Postgres-backed | ✓ ClickHouse-backed |
| Status pages | – | – | – | ✓ | – | – | ◐ | ✓ public + incidents | ✓ |
| Session replay | ✓ | ✓ | – | – | – | – | ✓ | – | out of scope (browser SDK) |
| Product analytics / feature flags | – | ✓ | – | – | – | – | ◐ | – | out of scope |
| Profiling | ✓ | – | – | – | – | ✓ | ✓ | – | out of scope for now |
| On-call schedules / escalation | ◐ | – | – | ✓ | – | ✓ | ✓ | – | integrate, don't build |
| Saved queries / starred views | ✓ | ✓ | ✓ | ◐ | – | ✓ | ✓ | – | next: persist a filter set by name |
| Query language (APL / Discover) | ◐ | ✓ | ✓ | ◐ | – | ✓ | ✓ | ◐ guarded SQL console | field filters cover most of it |
| Release health (issues per release) | ✓ | – | – | – | – | – | ◐ | ◐ deploy markers, not yet joined to issues | next |
| Suspect commits / code owners | ✓ | – | – | – | – | – | ◐ | – | needs VCS integration |
Priorities
P0 — core (shared pipeline, natural fit)
- ✅ Done — Storage architecture for scale: Postgres control plane + ClickHouse telemetry store.
- ✅ Done — Error grouping into fingerprinted issues (
issuestable,/api/issues, Issues page with resolve/ignore/regression lifecycle). - ✅ Done — Application logs: console capture in @sentrinel/plugin correlated by request ID, Logs tab + log-level filter in Request logs UI.
- ✅ Done — Alert notification channels: Slack / Discord / generic webhook delivery, managed on the Alerts page. (Email still open.)
- ✅ Done — OTLP/HTTP ingest (
POST /v1/traces) so any OTel SDK or Collector can send traces. - ✅ Done — Auth & multi-tenancy: self-serve signup (one org per account),
sessions, roles, team management, login throttling, and org scoping enforced
on every dashboard route (
SENTRINEL_REQUIRE_AUTH=true). - ✅ Done — Quota enforcement: per-org monthly counters, 429 over quota, usage on Settings.
P1 — cheap extensions of P0
8. ✅ Done — Cron/heartbeat monitoring: check-in URLs, sweeper, missed-job notifications.
9. ✅ Done — Live tail (SSE) on requests, logs, and errors, with a Live toggle on Request logs.
10. ✅ Done — SLOs: availability + latency objectives with error budgets and burn-down.
11. ✅ Done — Custom dashboards: saved widget configs (Settings → Custom dashboards).
12. ✅ Done — Deploy markers: version from the plugin → deployments, shown on Settings.
P2 — with clear pull only
13. ✅ Done — Status pages: public route over uptime + incidents (/public/status/:slug).
14. ✅ Done — LLM spans: GenAI attrs + price table → cost per model, client, and endpoint.
15. ✅ Done — Guarded read-only SQL console.
Remaining: email as a notification channel; ClickHouse-backed SQL console (the console currently queries Postgres); rendering saved custom dashboards on their own route (configs are stored and manageable today); billing/subscription management (plans and per-org quotas exist and are enforced, but there is no payment provider wired up).
P3 — deliberately out of scope Session replay, RUM, product analytics, feature flags, surveys (browser SDK products); profiling (cost/benefit); LLM gateway/proxying (different risk posture — see Helicone); on-call scheduling (integrate PagerDuty/Better Stack via the webhook channel instead).