KOUSOU 0 is an open data platform that structures the minutes, budgets, and procurement records of Japan's local councils and makes them available to citizens. All data is published under Creative Commons Attribution 4.0 International (CC BY 4.0, commercial use permitted with attribution). Operator information is available at the Operator section at the bottom of this page.
Records and publishes neutral data: minutes, fiscal indicators, hometown-tax balance, and reproducible SQL.
Editorial judgment: none (mechanical chronology, no rankings).
Topic-focused analysis and reports such as silent-themes studies and council-delay analyses.
Editorial judgment: applied (theme selection, indicator interpretation). To be published separately at labs.isvd.or.jp.
Peer-reviewed research articles by experts on municipal management, legal frameworks, and public-asset utilization.
Editorial judgment: applied (peer review). To launch in the future.
The scope-tag at the top of each page (e.g. "scope-macro · /") indicates the page's coverage range.
| Term | Description | Detail |
|---|---|---|
| Municipality karte | scope-micro page collecting council, fiscal, and election data for a single municipality | /[pref]/[city] |
| Municipality profile | The basic-info section inside the municipality karte (location, code, minutes URL) | — |
| scope-macro | Nationwide / site-wide range | /reports, /insights, ... |
| scope-meso | Prefecture-level / intra-prefecture comparison | /[pref], ... |
| scope-micro | Single-municipality range | /[pref]/[city], ... |
| AHS | Assembly Health Score, a composite of question quality and answer responsiveness | /en/methodology/ahs |
| Sakiokuri rate | Council-deferral rate, an observational metric of deliberation continuity | /en/methodology/sakiokuri-rate |
| Financial power index | The financial-power index as computed by the Ministry of Internal Affairs and Communications | /en/methodology |
| Original minutes | The official council minutes search system of each municipality (external link) | From each municipality karte |
The advisory board is still being planned. For now, indicator validity is reviewed by the ISVD board and the editorial committee, and the results are published on the methodology page.
Municipalities wishing to apply for official account verification should contact us via the inquiry form. We handle supplementation or correction of published data, and data-provision negotiations.
All derived analysis (scores, classifications, summaries) is released under CC BY 4.0. Commercial use, redistribution, translation, and adaptation are all permitted. When citing, please attribute "KOUSOU 0 (kousou0.isvd.or.jp)". Source data (minutes, budget cards) remains under the respective government terms of use.
KOUSOU 0 is operated by the Institute for Social Vision Design (ISVD), a Japanese general incorporated association. See Terms of Service and Privacy Policy for corporate details and contact.
The KOUSOU 0 editorial team also publishes related thematic sites. Explore them below.
