Open Data Portal
Providers using this tag (53)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Emerging 7 Early or largely undocumented
Minimal 46 Almost no public developer surface
Aragón Open DataCity of Milan Open Datadata.gov.ieLeeds Data MillMontréal, QuébecOfficial Ukrainian Government PortalQueensland Government DataAlbertaBienvenido a OpenData UGRBritish Columbia (DataBC)Buenos Aires DataCity of San JoseDados abertos Distrito FederalDados Abertos POADados RSdata.zagreb.hr Official Open Data Portaldati.emilia-romagna.itdatos.gob.mx - Sitio oficial de datos abiertos del Gobierno de la Repúblicadatos.gub.uy - Catálogo de Datos Abiertosdatos.misiones.gov.arFortaleza Dados Abertosgov.ilGoverno Aberto do Estado de São PauloIATI RegistryOklahomaOpen Data Regione ToscanaOpen Data Trentinoopendata.gov.jePortal Datos Abiertos Ayuntamiento de MálagaPortal de Dados Abertos da Cidade de São PauloPortal de Dados Abertos – Prefeitura de Belo HorizontePortal de Dados Urbanos PPGAU UFF - Open data portal for Urban ResarchPortal oficial Ayuntamiento de Rivas VaciamadridPortale Dati aperti del Comune di MateraRecife City Open DataLeipzig Open DataAcre Open DataBahia Blanca Open DataBahia Open DataEthiopia Open DataLiguria Open DataMendoza Open DataMessina Open DataModena Open DataNaples Open DataRondonia Open Data
APIs with this tag (0)
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Score breakdown
Frequency
44.2
log-scaled weighted occurrences
Breadth
0.7
spread across providers
Quality lift
8.6
mean composite of providers using it
Cohesion
37.6
strength of nearest seed neighbor
Related tags
DCAT 53 co-occurrences
CKAN 53 co-occurrences
Government Data 53 co-occurrences
Data Catalog 53 co-occurrences
JSON 53 co-occurrences
Italy 9 co-occurrences
Catalog 53 co-occurrences
Where this tag comes from
Provider tag53
Markets provisional
Kin Score markets whose measured providers carry this tag. Share is the fraction of the market's measured providers that carry it — it describes the market, not this tag.
| Market | Share of the market's providers |
|---|---|
| Open Data Portals (CKAN / DCAT) | 31% |
Cohort brief
Auto-generatedThe 53 providers in the APIs.io catalog tagged Open Data Portal, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
53
all scored
Mean Kin Score
8.6
-15.5 vs catalog 24.1
Mean Agent Readiness
0.6
-13.5 vs catalog 14.1
Spread
6.5–15.8
median 8 · σ 2.1
How the 53 split by band
Exemplar 0Strong 0Developing 0Thin 0Emerging 7Minimal 46
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Discoverability | 64.3 | 59.1 | +5.2 | 53 |
| Operational Transparency | 4.2 | 13.2 | -9 | 53 |
| Contract Governance | 0 | 9.7 | -9.7 | 53 |
| Developer Ergonomics | 10 | 24.5 | -14.5 | 53 |
| Contract Quality | 0 | 18.6 | -18.6 | 53 |
| Access Clarity | 7.1 | 30 | -22.9 | 53 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 0% | 18% | -18 |
| MCP server (first-party) | 0% | 16% | -16 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 0% | 13% | -13 |
| Security | 100% | 99% | +1 |
| Arazzo workflows | 0% | 1% | -1 |
| Governance rules | 0% | 36% | -36 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 open NRW 15.8
- 2 London Datastore 15.2
- 3 Greece National Data Portal 13
- 4 Transparency Portal for the City of Karlsruhe, Germany 13
- 5 OpenData.HRO - Portal für offene Data der Hansestadt Rostock 12.6
- 6 Datos abiertos 11.7
- 7 Transport for NSW Open Data Hub 11.5
- 8 Aragón Open Data 10.3
- 9 City of Milan Open Data 10.3
- 10 data.gov.ie 10.3
Top by Agent Readiness
- 1 open NRW 0.6
- 2 London Datastore 0.6
- 3 Greece National Data Portal 0.6
- 4 Transparency Portal for the City of Karlsruhe, Germany 0.6
- 5 OpenData.HRO - Portal für offene Data der Hansestadt Rostock 0.6
- 6 Datos abiertos 0.6
- 7 Transport for NSW Open Data Hub 0.6
- 8 Aragón Open Data 0.6
- 9 City of Milan Open Data 0.6
- 10 data.gov.ie 0.6
All 53 members of this roster resolve to a scored provider in
the catalog.
Coverage caveat. 53 of 53 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 14 November 2026, across 41591 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.
Coverage caveat. 53 of 53 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 14 November 2026, across 41591 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.