AI Lifeline (read-only observed values)

List the chapters AI Lifeline publishes (one entry per chapter page, from /api/index.json) with their page URL, API URL, the one-sentence answer line, the headline value (value, unit, date) and the series ids that belong to the chapter. region: optional filter, one of 'jp', 'us', 'eu', 'sg'. Returns exactly what index.json and series.json contain; no re-aggregation.

{
  "type": "object",
  "properties": {
    "region": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Region"
    }
  },
  "additionalProperties": false
}

Return one series by its permanent id ('<region>/<chapter>/<series_key>', e.g. 'jp/fiscal/jgb_yield') with the latest published value, unit, observed_at (observation date), value_status (final/provisional), the primary source (name, source_url, license, attribution), update frequency, last confirmed date, staleness judgement from health.json, limitations, page and API URLs, and checked_at (generation time of the site files). Values are the ones published by the site; nothing is recomputed.

{
  "type": "object",
  "properties": {
    "series_id": {
      "type": "string",
      "title": "Series Id"
    }
  },
  "required": [
    "series_id"
  ],
  "additionalProperties": false
}

Return the liveness of AI Lifeline itself from /api/health.json: site_status (ok/degraded), totals (series, stale, fetch_failed, source_under_review, not_measured), the staleness rule as written, the generation time per edition, and per series: last confirmed observation date, update frequency, next expected update, stale flag, age_days and the status of the last fetch. region: optional filter 'jp'|'us'|'eu'|'sg'. only_stale: return only series with stale=true. Nothing here judges the observed world.

{
  "type": "object",
  "properties": {
    "region": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Region"
    },
    "only_stale": {
      "type": "boolean",
      "default": false,
      "title": "Only Stale"
    }
  },
  "additionalProperties": false
}

Search published series by words in the series id, name, chapter, unit or source name (case-insensitive substring match over /api/series.json). Returns up to `limit` matches with series_id, name, unit, region, chapter, update_frequency, last_confirmed and source name; use get_series for the value. No ranking beyond match order in the registry.

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "title": "Query"
    },
    "limit": {
      "type": "integer",
      "default": 20,
      "title": "Limit"
    }
  },
  "required": [
    "query"
  ],
  "additionalProperties": false
}