Japan Tokyo Open Data Catalog (CKAN API)
Pricing
Pay per usage
Unofficial client for the Tokyo Metropolitan Government Open Data Catalog (CKAN API v3, no key). Search datasets by keyword/publisher/category, or download a dataset's CSV records as structured JSON (Shift_JIS aware). CC BY 4.0.
search_datasets (default) finds datasets (CKAN package_search) and returns their metadata incl. resource CSV URLs — set at least one of query / organization / tags / group. get_records downloads a dataset's CSV resource(s) and returns the rows as structured JSON — set datasetId or resourceUrl. Example: "search_datasets".
search_datasets mode: free-text query over dataset titles/descriptions (CKAN q), Japanese works best, e.g. "保育" (childcare), "避難所" (evacuation shelters), "人口". At least one of query / organization / tags / group is required in search_datasets mode.
search_datasets mode (optional): restrict to a publisher by its CKAN organization name, e.g. "t131067" (台東区 / Taito City). Find names in a search_datasets run (the organizationId field).
search_datasets mode (optional): restrict to a category by its CKAN group name, e.g. "c016" (くらし・住まい) or "c019" (子供・若者・教育).
get_records mode (REQUIRED there unless resourceUrl is given): the CKAN dataset name/slug to read, e.g. "t131067d0000000225" — take it from a search_datasets run (the datasetId field). The Actor resolves the dataset's CSV/TSV resources and downloads their rows.
get_records mode (alternative to datasetId): fetch this specific CSV resource URL directly (an absolute http(s) URL from a dataset's resources[].url).
get_records mode: character encoding of the CSV body. auto (default) sniffs UTF-8 (incl. BOM) then falls back to Shift_JIS — many Japanese municipal CSVs are Shift_JIS. Spellings such as "utf8", "Shift-JIS", "sjis", "cp932" are accepted.
Maximum number of records (datasets or CSV rows) to output, 1-100000. PPE charges per record. Example: 1000.
Hard safety cap on upstream requests per run, 1-25 (search pages 1000 datasets per request; get_records may fetch several resources). Politeness (1 connection, >= 1.2 s spacing, exponential backoff on 429/5xx) is enforced in code. Example: 10.
Apify proxy settings. Default is NO proxy (direct connection) — a public API rarely needs one. The Actor backs off exponentially on 429/5xx and fails visibly on a persistent block; it never attempts rate-limit evasion.
{ "useApifyProxy": false}