{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://agenticweb.wiki/schema/digest.schema.json",
  "title": "agenticweb.wiki daily digest",
  "description": "One day's digest: written items, each citing the sources it rests on, plus the day's measured stats. Written by the engine's `daily` command; served at /digest/<date>/index.json and by the MCP tool digest(date).",
  "type": "object",
  "additionalProperties": false,
  "required": ["version", "date", "url", "generated_at", "window", "headline", "lede", "items", "stats", "record_changes", "method", "license"],
  "$defs": {
    "date": { "type": "string", "pattern": "^\\d{4}-\\d{2}-\\d{2}$" },
    "source": {
      "type": "object",
      "required": ["url", "title", "publisher", "published", "label", "fetched"],
      "additionalProperties": false,
      "properties": {
        "url": { "type": "string", "pattern": "^https://" },
        "title": { "type": "string" },
        "publisher": { "type": "string" },
        "published": { "type": ["string", "null"] },
        "label": { "enum": ["VERIFIED", "REPORTED"] },
        "fetched": { "type": "boolean" }
      }
    },
    "related": {
      "type": "object",
      "required": ["id", "name", "url"],
      "additionalProperties": false,
      "properties": {
        "id": { "type": "string" },
        "name": { "type": "string" },
        "url": { "type": "string" }
      }
    },
    "adoption_row": {
      "type": "object",
      "additionalProperties": false,
      "required": ["delta", "domains", "id", "name"],
      "properties": {
        "delta": { "type": ["integer", "null"] },
        "domains": { "type": "integer" },
        "id": { "type": "string" },
        "name": { "type": "string" }
      }
    },
    "domain_move": {
      "type": "object",
      "additionalProperties": false,
      "required": ["domain", "id", "name"],
      "properties": {
        "domain": { "type": "string" },
        "id": { "type": "string" },
        "name": { "type": "string" }
      }
    },
    "grade_change": {
      "type": "object",
      "additionalProperties": false,
      "required": ["domain", "from", "score_from", "score_to", "to"],
      "properties": {
        "domain": { "type": "string" },
        "from": { "type": "string" },
        "score_from": { "type": "integer" },
        "score_to": { "type": "integer" },
        "to": { "type": "string" }
      }
    },
    "mover": {
      "type": "object",
      "additionalProperties": false,
      "required": ["delta", "pct", "repo", "stars"],
      "properties": {
        "delta": { "type": "integer" },
        "pct": { "type": "number" },
        "repo": { "type": "string" },
        "stars": { "type": "integer" }
      }
    }
  },
  "properties": {
    "version": { "const": 1 },
    "date": { "$ref": "#/$defs/date" },
    "url": { "type": "string", "pattern": "^https://agenticweb\\.wiki/digest/\\d{4}-\\d{2}-\\d{2}/$" },
    "generated_at": { "type": "string" },
    "window": {
      "type": "object",
      "additionalProperties": false,
      "required": ["from", "to"],
      "properties": {
        "from": { "type": "string" },
        "to": { "type": "string" }
      }
    },
    "headline": { "type": "string", "minLength": 1, "maxLength": 160 },
    "lede": { "type": "string", "minLength": 1, "maxLength": 800 },
    "items": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["id", "title", "body", "why_it_matters", "kind", "related", "sources", "stats"],
        "additionalProperties": false,
        "properties": {
          "id": { "type": "string", "pattern": "^\\d{4}-\\d{2}-\\d{2}-\\d+$" },
          "title": { "type": "string", "minLength": 1 },
          "body": { "type": "string" },
          "why_it_matters": { "type": ["string", "null"] },
          "kind": { "enum": ["spec", "adoption", "launch", "governance", "security", "research", "other"] },
          "related": { "type": "array", "items": { "$ref": "#/$defs/related" } },
          "sources": { "type": "array", "items": { "$ref": "#/$defs/source" } },
          "stats": { "type": "array", "items": { "type": "string" } }
        },
        "anyOf": [
          { "properties": { "sources": { "minItems": 1 } } },
          { "properties": { "stats": { "minItems": 1 } } }
        ]
      }
    },
    "stats": {
      "type": "object",
      "additionalProperties": false,
      "required": ["previous", "panel", "repos", "registry"],
      "properties": {
        "previous": { "anyOf": [{ "$ref": "#/$defs/date" }, { "type": "null" }] },
        "panel": {
          "type": "object",
          "additionalProperties": false,
          "required": ["domains", "checked", "errors", "compared", "grades", "adoption", "gained", "lost", "grade_changes"],
          "properties": {
            "domains": { "type": "integer" },
            "checked": { "type": "integer" },
            "errors": { "type": "integer" },
            "compared": { "type": "integer" },
            "grades": {
              "type": "object",
              "additionalProperties": false,
              "required": ["A+", "A", "B", "C", "D", "F"],
              "properties": {
                "A+": { "type": "integer" },
                "A": { "type": "integer" },
                "B": { "type": "integer" },
                "C": { "type": "integer" },
                "D": { "type": "integer" },
                "F": { "type": "integer" }
              }
            },
            "adoption": { "type": "array", "items": { "$ref": "#/$defs/adoption_row" } },
            "gained": { "type": "array", "items": { "$ref": "#/$defs/domain_move" } },
            "lost": { "type": "array", "items": { "$ref": "#/$defs/domain_move" } },
            "grade_changes": { "type": "array", "items": { "$ref": "#/$defs/grade_change" } }
          }
        },
        "repos": {
          "type": "object",
          "additionalProperties": false,
          "required": ["tracked", "movers"],
          "properties": {
            "tracked": { "type": "integer" },
            "movers": { "type": "array", "items": { "$ref": "#/$defs/mover" } }
          }
        },
        "registry": {
          "type": ["object", "null"],
          "additionalProperties": false,
          "required": ["servers", "since", "versions"],
          "properties": {
            "servers": { "type": "integer" },
            "since": { "type": "string" },
            "versions": { "type": "integer" }
          }
        }
      }
    },
    "record_changes": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["record_id", "name", "summary", "url", "label", "date"],
        "properties": {
          "record_id": { "type": "string" },
          "name": { "type": "string" },
          "summary": { "type": "string" },
          "url": { "type": "string", "pattern": "^https://" },
          "label": { "type": "string" },
          "date": { "type": "string" }
        }
      }
    },
    "previous": { "anyOf": [{ "$ref": "#/$defs/date" }, { "type": "null" }] },
    "method": {
      "type": "object",
      "additionalProperties": false,
      "required": ["sources", "candidates", "kept", "facts", "models", "notes", "rules", "after_dedupe", "fetched"],
      "properties": {
        "sources": {
          "type": "object",
          "additionalProperties": false,
          "minProperties": 1,
          "properties": {
            "arxiv": { "type": "integer" },
            "datatracker": { "type": "integer" },
            "exa": { "type": "integer" },
            "feeds": { "type": "integer" },
            "hn": { "type": "integer" },
            "parallel": { "type": "integer" },
            "tips": { "type": "integer" }
          }
        },
        "candidates": { "type": "integer" },
        "kept": { "type": "integer" },
        "facts": { "type": "integer" },
        "models": {
          "type": "object",
          "additionalProperties": false,
          "required": ["triage", "writer"],
          "properties": {
            "triage": { "type": "string" },
            "writer": { "type": "string" }
          }
        },
        "notes": { "type": "array", "items": { "type": "string" } },
        "rules": { "type": "string" },
        "after_dedupe": { "type": "integer" },
        "fetched": { "type": "integer" }
      }
    },
    "license": { "const": "CC BY 4.0" }
  }
}