Open Data Zürich: CC0 Government Data Catalogue
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
7 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.
How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page
✎ Corrected 27 Aug 2026 Publication date recorded for 5 sources. What changed →
Switzerland's first open-data portal, and the rare one where the licence question has no asterisk: 937 datasets, 937 licences, 908 of them CC0. The binding rule came nine years after the portal.
what does this mean?
The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 8 more in Zürich · 📊 Open data guide · 📡 Data & IoT projects
Zurich opened Switzerland's first open-government-data portal in June 2012. Today data.stadt-zuerich.ch lists 937 datasets, and every one carries a licence: 908 are CC0 public-domain dedications, the rest CC BY or CC BY-SA. A 2021 city-council decision made 'open by default' binding. Community developers now expose the catalogue to AI assistants through three open-source MCP servers.
🎓 Lesson
The portal is the quick part; the rule is the slow one. Zurich's catalogue opened in June 2012, and open by default only became binding with city council decision 741/2021, in force from 1 September 2021 - nine years in which publishing stayed a choice each department made. What the rule bought is the thing the catalogue can now show without an asterisk: every dataset in it carries a licence, and almost all of them the most permissive one there is.
Sources
Show your work What this page rests on and what it can’t tell you · all 7 claims with their sources · the forensic record
Evidence Passport · public beta 7 addressable claims, 5 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.
Inspect the claims, one by one — verbatim text, sources and caveats for all 7
The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.
clm-ea52379ab32d8178
quantitative
Zurich opened Switzerland's first open-government-data portal in June 2012
Sources carrying this claim
clm-4d010b2c37953da2
quantitative
data.stadt-zuerich.ch lists 937 datasets, and every one carries a licence: 908 are CC0 public-domain dedications, the rest CC BY or CC BY-SA
Sources carrying this claim
clm-049101ec5146ce1f
quantitative
A 2021 city-council decision made 'open by default' binding
Sources carrying this claim
clm-5d92c2183a8fc456
descriptive
Community developers now expose the catalogue to AI assistants through three open-source MCP servers
Sources carrying this claim
clm-11fc4ab471682808
quantitative
937 datasets, all licensed: 908 CC0, 16 CC BY-SA, 13 CC BY (portal API, July 2026)
Sources carrying this claim
clm-0be5e3b030b08c58
quantitative
Zurich's catalogue opened in June 2012, and open by default only became binding with city council decision 741/2021, in force from 1 September 2021
Sources carrying this claim
clm-675f01a18449eda6
descriptive
every dataset in it carries a licence, and almost all of them the most permissive one there is
Sources carrying this claim
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders
This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.
Awaiting operator and domain-expert review; publication of this revision implies neither.
sha256:a3f788330b9321dac775549f8f824161a862a542d7b753ac9ecce934507cdbc1
- 7
- of 7 claims mapped
- 5
- source dossiers
- 1
- publication dates recorded
- 0
- archives linked
- 0
- exact locators
- 0
- content captures hashed
Governance facts carried by the record
- Operator
- Statistik Stadt Zürich (Open Data Zürich)
- Actor types
- city-government
- Funding model
- public
- Funding description
- Not recorded
- Cost
- Not recorded
- Ownership
- Not recorded
- Decision rights
- Not recorded
- Exit conditions
- Not recorded
5 source dossiers
Open Data Zürich — data catalogue
- Stable source ID
src-550c250afbfa68b2- Publisher
- Name not classified · data.stadt-zuerich.ch
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-26
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
The catalogue itself. A live portal with no publication date.
- Claims linked
Open Data Zürich — CKAN licence facet (API)
- Stable source ID
src-8996700761a35724- Publisher
- Name not classified · data.stadt-zuerich.ch
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-26
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
The catalogue's own licence facet, queried directly, which is where the licence counts come from. A live API with no publication date.
Stadt Zürich — Open Government Data (framework)
- Stable source ID
src-6e97149a7aa96908- Publisher
- Name not classified · stadt-zuerich.ch
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-26
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
The city's framework page, which states the council decision that made open by default binding and the date it took effect. A standing page with no publication date.
Stadt Zürich — MCP servers for the OGD catalogue
- Stable source ID
src-4b7d55fd963d7e76- Publisher
- Name not classified · stadt-zuerich.ch
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-26
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
The city's page on the community-built servers that expose the catalogue to AI assistants. No publication date is shown. No publication date is recorded: the page did not answer when this entry was checked.
- Claims linked
Kommune21 — Schweizer Open-Data-Pionier
- Stable source ID
src-2fcb6c6d3a4d3b2b- Publisher
- Name not classified · kommune21.de
- Type / language
- web-page · language not classified
- Published
- 2012-07-17
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-26
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Trade coverage of Zurich as Switzerland's open-data pioneer. No publication date could be read from the page.
- Claims linked
Known limits of this passport
- Publisher names and source languages have not yet been classified; domains are recorded without guessing.
- Existing source notes are descriptive locators, not page- or paragraph-exact citations.
- A missing archive, publication date or content hash is shown as null rather than inferred.
- The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.
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📎 Cite this project
1001 Smart Cities (2026). “Open Data Zürich: CC0 Government Data Catalogue” — Zürich, Switzerland. The Smart City Atlas. https://1001smartcities.org/projects/zurich-open-data/ (last verified 2026-08-26). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.