{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "sks.core-skill-card.v1",
  "title": "SKS Core Skill Card",
  "description": "A Core Skill Card is the frozen agent's external, versioned skill state. It is read-only: it confers no mutation rights and a deployed card must be an immutable snapshot.",
  "type": "object",
  "required": ["schema", "skill_id", "route", "version", "status", "body", "deployment_snapshot", "side_effect_scope"],
  "additionalProperties": true,
  "properties": {
    "schema": { "const": "sks.core-skill-card.v1" },
    "skill_id": { "type": "string", "minLength": 1 },
    "route": { "type": "string", "minLength": 1 },
    "version": { "type": "integer", "minimum": 1 },
    "status": { "type": "string", "enum": ["candidate", "accepted", "rejected", "deployed"] },
    "body": { "type": "string" },
    "deployment_snapshot": { "type": "boolean" },
    "side_effect_scope": {
      "type": "object",
      "required": ["allowed_mutations", "read_only"],
      "additionalProperties": true,
      "properties": {
        "allowed_mutations": { "type": "array", "items": { "type": "string" } },
        "read_only": { "type": "boolean" }
      }
    }
  }
}