What can be submitted?

A guided, AI-assisted chat report with a category, description, location, and optional media file.

Is a location required?

Yes. Latitude and longitude are required so the report can be placed on the Delta Sentinel map.

Does the assistant use AI on my photo?

If you attach a photo, an on-device AI model (TensorFlow.js) pre-labels it in your browser to speed up triage. The server independently re-classifies every submission before it is acted on.

Delta Sentinel is a free, guided chat interface for reporting public-space problems in Hungary (water, gas, electricity, streetlights, road damage, burst pipes, gas smell, graffiti, illegal dumping): category, description, location and a photo — 3 steps, with an instant DS-B code.

Delta Sentinel

Online report

Answer a few questions — your cover photo gets an on-device AI pre-screen before you submit.

Hi! Let's get your report in quickly. What kind of problem is it?

Nearby reports

Check whether someone already reported the same problem near you — confirm or add to it instead of filing a duplicate.

Open the map

Why sign in?

Signing in earns you points, levels you up, and lets you track what happens to your report on the portal.

Learn more

Support

Delta Sentinel is built through community funding — support the development

There is no investor behind this project — it moves forward on volunteer work and community contributions. Every bit of support turns directly into new features and faster fixes.

Support the project

Online report

Before you submit

Nearby reports

Why sign in?

Delta Sentinel is built through community funding — support the development