{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:public-gossip:v1",
  "title": "PublicGossip v1",
  "description": "Machine-readable schema for the content body of an Agora record carrying a public, bounded gossip item: a rumor, weak signal, or low-resolution observation that is intentionally not evidence. The enclosing `agora-record.v1` envelope carries identity, authorship, topic routing, `record/about`, parent/supersedes links, and signature. This payload carries only the public epistemic claim and its local context.",
  "type": "object",
  "additionalProperties": true,
  "x-dia-workflow": "project",
  "x-dia-status": "draft",
  "x-dia-basis": [
    "doc/project/40-proposals/035-agora-topic-addressed-record-relay.md",
    "doc/project/60-solutions/008-agora/008-agora-dir-simplify-impl.md"
  ],
  "required": [
    "schema",
    "gossip/text",
    "epistemic/class",
    "topic/class",
    "confidence",
    "disclosure/scope"
  ],
  "properties": {
    "schema": {
      "const": "public-gossip.v1",
      "description": "Content-level discriminator for consumers that inspect the payload outside its Agora envelope."
    },
    "gossip/text": {
      "type": "string",
      "minLength": 1,
      "maxLength": 4096,
      "description": "Human-readable public gossip text. Renderers MUST treat it as untrusted input. This text is not evidence; it is a public claim requiring independent corroboration."
    },
    "gossip/lang": {
      "type": "string",
      "minLength": 2,
      "maxLength": 35,
      "pattern": "^[A-Za-z]{2,3}(-[A-Za-z0-9]{1,8})*$",
      "description": "Optional BCP 47 language tag for `gossip/text`."
    },
    "epistemic/class": {
      "type": "string",
      "enum": [
        "rumor",
        "weak-signal",
        "observation"
      ],
      "description": "Epistemic posture. `rumor` is unverified social information; `weak-signal` is an early pattern hint; `observation` is a low-resolution public observation that still must not be treated as verified evidence by this schema alone."
    },
    "topic/class": {
      "type": "string",
      "minLength": 1,
      "maxLength": 128,
      "pattern": "^[a-z0-9][a-z0-9._-]*$",
      "description": "Normalized semantic class used for topic grouping and local correlation. This is not the Agora `topic/key`; it is payload-level meaning."
    },
    "context/facets": {
      "type": "array",
      "maxItems": 16,
      "uniqueItems": true,
      "items": {
        "type": "string",
        "minLength": 1,
        "maxLength": 96
      },
      "description": "Optional low-resolution facets that help readers and indexers understand the context without forcing raw disclosure."
    },
    "confidence": {
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "description": "Author-local confidence in the relevance or signal value. Consumers MUST NOT treat this as proof or reputation weight without an explicit policy mapping."
    },
    "disclosure/scope": {
      "type": "string",
      "const": "public",
      "description": "Public gossip is intentionally public. Private or federation-scoped rumor exchange belongs to `whisper-signal.v1` or another non-public transport policy."
    },
    "gossip/source-kind": {
      "type": "string",
      "enum": [
        "first-hand",
        "second-hand",
        "pattern-observed",
        "machine-assisted",
        "unspecified"
      ],
      "description": "Optional coarse source posture. It is a disclosure aid, not an evidentiary proof."
    },
    "gossip/tags": {
      "type": "array",
      "maxItems": 16,
      "uniqueItems": true,
      "items": {
        "type": "string",
        "minLength": 1,
        "maxLength": 64
      },
      "description": "Optional loose tags. Tags are not a closed taxonomy."
    },
    "gossip/expires-at": {
      "type": "string",
      "format": "date-time",
      "description": "Optional author-suggested expiration time for the effective gossip view. Projection policy MAY clamp this value and MUST keep the historical Agora record immutable."
    },
    "gossip/decay-half-life-seconds": {
      "type": "integer",
      "minimum": 1,
      "maximum": 31536000,
      "description": "Optional author-suggested half-life for local effective-weight decay. Projection policy MAY clamp this value."
    },
    "gossip/min-effective-weight": {
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "description": "Optional author-suggested minimum effective weight below which the local projection may treat the gossip as below-threshold. Projection policy MAY clamp this value."
    },
    "gossip/see-also": {
      "type": "array",
      "maxItems": 32,
      "uniqueItems": true,
      "items": {
        "type": "array",
        "prefixItems": [
          {
            "type": "string",
            "minLength": 1,
            "maxLength": 64,
            "description": "Kind of referenced object, such as `url`, `record`, `topic`, or `resource`."
          },
          {
            "type": "string",
            "minLength": 1,
            "maxLength": 512,
            "description": "Identifier of the referenced object in the form canonical for its kind."
          }
        ],
        "items": false,
        "minItems": 2,
        "maxItems": 2
      },
      "description": "Optional related public resources or records."
    },
    "policy/notes": {
      "type": "string",
      "maxLength": 512,
      "description": "Optional policy or moderation note shown to readers."
    }
  }
}