Integrations

An integration is a third-party tool you can attach to an app from a small curated catalog. When you attach one, Levelrail stores the values it needs (an API key, a DSN) with the same envelope encryption every app secret uses. It then injects the tool’s env vars into the app’s container at the next build or deploy. This is env-var injection only. There is no webhook or OAuth wiring with the vendor, so a tool that needs more than an env var is not in this catalog.

Attaching an integration

Dashboard
CLI

Open an app, go to its Integrations tab, and use Attach integration under Third-party tools. Search the catalog, pick a tool, fill in its required fields, and save. The values you type are never shown again after saving.

levelrail-cli apps integrations catalog
levelrail-cli apps integrations add my-app sentry --field SENTRY_DSN=https://key@o0.ingest.sentry.io/0
levelrail-cli apps integrations list my-app
levelrail-cli apps integrations remove my-app <attachment-id>

Optional fields that you leave out take the default listed in the catalog below.

Precedence

Integration env vars are injected as a default, the same tier as a project, organization or environment shared env var. If the app’s own app.yaml or dashboard env already declares the same variable name, the app’s own value wins. Detaching an integration removes its env vars at the app’s next deploy.

Catalog

Tool	What it does	Env var(s)	Setup
Sentry	Error tracking and performance monitoring.	`SENTRY_DSN`	Paste the DSN from your Sentry project’s client keys settings.
PostHog	Product analytics, feature flags, and session replay.	`NEXT_PUBLIC_POSTHOG_KEY`, `NEXT_PUBLIC_POSTHOG_HOST` (optional, defaults to `https://us.i.posthog.com`)	Paste your project API key from PostHog’s project settings.
GlitchTip	Self-hosted, Sentry-SDK-compatible error tracking.	`SENTRY_DSN`	Paste the DSN from your GlitchTip project.
OneUptime	Error tracking, uptime, logs and APM over OpenTelemetry.	`OTEL_EXPORTER_OTLP_HEADERS`, `OTEL_EXPORTER_OTLP_ENDPOINT` (optional, defaults to `https://oneuptime.com/otlp`), `OTEL_SERVICE_NAME` (optional)	Paste the header carrying your service token, for example `x-oneuptime-token=<token>`.
Plausible	Privacy-first web analytics.	`NEXT_PUBLIC_PLAUSIBLE_DOMAIN`, `NEXT_PUBLIC_PLAUSIBLE_API_HOST` (optional, defaults to `https://plausible.io`)	Enter the site domain registered in Plausible.
Datadog	APM tracing, infrastructure, and log monitoring.	`DD_API_KEY`, `DD_SITE` (optional, defaults to `datadoghq.com`)	Paste an API key from Datadog’s organization settings.
Axiom	Log and event data platform.	`AXIOM_TOKEN`, `AXIOM_DATASET`	Create an API token and dataset in Axiom, then paste both.
Better Stack	Log management and uptime monitoring.	`LOGTAIL_SOURCE_TOKEN`	Paste the source token from your Better Stack log source.
LogSnag	Real-time event notifications and analytics.	`LOGSNAG_TOKEN`, `LOGSNAG_PROJECT`	Paste an API token and your project name from LogSnag’s settings.
BugSnag	Error monitoring and stability management.	`BUGSNAG_API_KEY`	Paste the API key from your BugSnag project’s settings.
New Relic	Full-stack observability and APM.	`NEW_RELIC_LICENSE_KEY`	Paste your account’s license key from New Relic’s API keys page.

Every entry links to the vendor’s own setup docs. Self-hosted Sentry, PostHog and Plausible work too: point the DSN or host field at your own instance.

Last modified on October 12, 2026

Essentials

Deploying

Networking and multi-node

Databases and storage

CI/CD and automation

Security and access

Scale and operations

AI and agents

Templates and catalog

Migrating from other platforms

Beta and experimental

Attaching an integration

Precedence

Catalog

​Attaching an integration

​Precedence

​Catalog

Attaching an integration

Precedence

Catalog