Central & Eastern Europe on apis.io maps 77 providers publishing 565 APIs across Poland, Czechia, Hungary, Romania, the Balkans and the post-Soviet states. Four of them score strong or exemplar. Only one of those four, Braiins, was admitted by its stated headquarters. Infobip, the highest score in the region, describes itself as headquartered in Vodnjan, Croatia, yet it was admitted by tag, not by HQ.
The region page says how it works. A provider joins through a tag, a name pattern, or a stated headquarters, and the map is “a map of stated headquarters, not of markets served.” Of the 77, 43 joined by tag, 16 by name and 24 by stated HQ.
The top of the region
| Provider | Band | Kin Score | APIs | Admitted by |
|---|---|---|---|---|
| Infobip | exemplar | 84.9 | 6 | tag |
| ZnanyLekarz | exemplar | 74.3 | 11 | tag |
| Raiffeisenbank (Russia) | strong | 63.2 | 113 | tag |
| Braiins | strong | 61.5 | 19 | hq |
| Avito | developing | 51.7 | 51 | tag |
| Oxylabs | developing | 50.6 | 15 | hq |
| SEON | developing | 43.9 | 11 | hq |
| University of Warsaw | developing | 43.1 | 152 | tag |
What the evidence says
The companies that state an HQ score lower than the region’s leaders. The 24 providers admitted by stated headquarters break down as 1 strong, 4 developing, 4 thin, 1 emerging, 13 minimal and one unscored, and together they list 107 APIs. Oxylabs (Lithuania) and SEON (Hungary) are the best of them after Braiins, and both score developing. Infobip, at 84.9, should be in that group and is not. Its description names Croatia, but the HQ pattern did not match it, and only its tag put it in the region. If a provider had neither the tag nor a matched pattern, it would not appear here at all.
The bottom half is the public sector. The region has 43 providers in the minimal band. Twenty-one of them list exactly one API, and most of those are state data portals: data.gov.ua, Croatia’s data.gov.hr, Bulgaria’s data.egov.bg, Slovenia’s OPSI, Hungary’s Kozadat, and open-government entries for Poland, Czechia and Romania. Procurement tender feeds for Hungary, Poland, Romania and Ukraine, the Czech National Bank and the National Bank of Poland make up much of the rest. These are real public APIs with very little published about them.
API count and score do not move together. The University of Warsaw lists 152 APIs, the most in the region, and scores 43.1. Raiffeisenbank (Russia) lists 113 and scores 63.2, because 106 of its 113 are published contracts. The university has 3. The region’s two largest surfaces differ mainly in how much of each is machine-readable.
Thirty of the 77 list no APIs at all, including Rimac Automobili, DappRadar and Estateguru.
Takeaway
Central and Eastern Europe has a few strong commercial APIs (messaging, healthcare booking, banking, bitcoin mining), a large group of public data portals, and a gap between them. To see the region’s best APIs, filter by tag, not headquarters. To help the long tail, start with the portals: one published contract would move most of them out of minimal. See the region at apis.io/regions/cee/.