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Wednesday, 2 September 2026 Reading Room

Tech

I open-sourced Kleinanzeigen's full category tree (634 categories, no API existed) 🗂️

Kleinanzeigen.de — Germany's biggest classifieds site — has no public API and no category reference. While building AnzeigenBoost, I had to reverse-engineer the full category tree directly from their listing form: 15 top-level, 143 second-level, 476 third-level categories, with numeric IDs for L1/L2 and slug IDs for L3. I open-sourced it: github.com/Rebaiahmed/anzeigenboost-open (MIT) Includes a…

dev.to ·

A developer has open-sourced the full category tree for Kleinanzeigen.de, Germany's largest classifieds site, after reverse-engineering it due to the lack of a public API. The category tree consists of 15 top-level, 143 second-level, and 476 third-level categories, each assigned unique numeric and slug IDs. The source material, found on Dev.to, includes a full tree with IDs, a flat names-only version, and a lookup example, all available on GitHub under the MIT license.

The developer encourages contributions to keep the category tree current as Kleinanzeigen continues to make changes.

Brief written by urgent.news from Dev.to's own syndicated text. Machine-written — may contain errors; check the original before relying on it.

Read the original at dev.to →

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