Tips For Diving Into The New Cribl App Development Framework
Traditionally, we have had to solve complex data or security workflows by using multiple browser tabs, complicated spreadsheets, and many internal messages. IT, Security, and DevOps environments are drowning in high-velocity telemetry, fragmented tooling, and growing AI-driven data demands. Even though Cribl Stream, Search, and Lake give us control over our data, we sometimes still hit a wall when trying to deliver tailored solutions, as the standard out-of-the-box dashboards don’t fit every workflow required.
We were excited to hear that Cribl introduced app-building directly into the platform. In this post, we’ll dive into what the Cribl App platform can do, the challenges it can address, and some practical tips to help you build reliable, native apps.
What a Cribl App is…and What It Isn’t
Before we start slinging code, let’s make sure we define when an App is needed versus a Pack.
Cribl Packs package and share reusable configuration content – like Sources, Routes, Pipelines, and Knowledge Objects. They structure data inside Cribl’s native engines.
Cribl Apps package custom user interfaces, interactive workflows, state, and logic that execute directly against Cribl APIs. They run as sandboxed web applications right inside the Cribl Cloud UI, with the option to reach out externally through APIs as well.
Apps are built within the Cribl platform, leveraging existing platform functionality. For example, Stream is used for collection and routing, Search for analysis, and Lake for storage. There’s no new infrastructure or license fee, as apps draw down credits from the underlying products.
In summary, if you just need out-of-the-box routing rules or standard search views, use Packs, and if you need a standalone, interactive experience with custom workflows, persistent state, and specialized API logic, go forward with an App.
Navigating the Framework Boundaries
There are some strict boundaries to consider when you build an app. Taking this into consideration prior to building could save you a substantial amount of time.
+-------------------------------------------------------------------+
| Cribl Cloud UI |
| +-------------------------------------------------------------+ |
| | Sandboxed App (iframe) | |
| | * Injected Globals (API Base, App ID) | |
| | * Bundled Assets & Custom UI (No External CDNs) | |
| +------------------------------+------------------------------+ |
| | |
+---------------------------------|---------------------------------+
| Proxied API Calls
v
+-------------------------------------------------------------------+
| Cribl Platform Services |
| +-------------------+ +------------------+ +-------------+ |
| | Permissions Check |-->| Key-Value Store | | Cribl API | |
| | (Manifest Valid.) | | (~100KB Cap) | | (Stream, | |
| +-------------------+ +------------------+ | Search, Lake| |
| +-------------+ |
+-------------------------------------------------------------------+
Sandbox Environment
Cribl Apps run inside an iframe in the browser and can have backend functions of their own that run on user-defined schedules. Since runtime network requests can’t reach arbitrary external hosts, you need to bundle all assets (fonts, icons, dependencies) inside your package.
Permissions
An app requires an explicit manifest declaring every Cribl API route it intends to call and every external host it needs to reach via the platform proxy. Backend functions and any cron schedules must also be declared.
The local fixture-driven development server will ignore missing permissions, but the moment you deploy to a live environment, an undeclared API call will fail outright. Ensure you always declare your permissions when you write the code.
Shared Key-Value Storage
If your app needs to remember data such as user settings, approval states, or triage notes, the platform provides a shared key-value store. The store is app-scoped, not user-partitioned. Any state written by one user will be visible to all users who open the app. Never store unmasked credentials or sensitive information.
Practical Engineering Methods
Building an app that demos well on a local dev server is one thing, but shipping an app that survives a production environment requires discipline. Here are some practical guildelines to help ensure success:
1. Don’t Rely on Local
Local fixtures hide permission enforcement failures, storage cap bugs, live API payload nuances, and real-world latency. Package and deploy a minimal working slice to a real test environment early and frequently.
2: Presentation
When an API call returns empty, or a user lacks permission for a specific scope, don’t let it crash the view or surface a raw stack trace. Make sure a clean, contextual empty state is displayed. Partial access should still deliver partial value.
3: Build Trust
Help build trust for your users by ensuring the app looks, feels, and writes like the host platform:
- Use standard product terminology.
- Follow light/dark themes and use restrained accent colors.
- Implement deep links back into native tools whenever referencing specific data.
- Keep text clear, inclusive, and professional.
4: Implement a Pre-Ship Gate
Before tagging a release, run an exhaustive audit:
- Ensure type-checks, lints, and test suites run 100% green.
- Audit source code and packaged archives to ensure no stray credentials, developer hostnames, or test tokens remain.
- Verify that every declared permission in your manifest is actively used, and every used route is explicitly declared.
The Cribl app-building framework offers us a whole new dimension of observability engineering. By decoupling your user interfaces from standard vendor constraints, you can build tailored, repeatable workflows directly on top of your existing telemetry pipelines. No matter what you’re building, remember: keep your app scoped, sandboxed, and tested against live environments.
Looking to expedite your success with Cribl? View our Cribl Professional Service offerings.
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