{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://trustgraduation.org/spec/0.1/decision.schema.json",
  "title": "Trust Graduation Decision",
  "description": "Gate decision for one proposed action class. Trust Graduation Protocol v0.1.",
  "type": "object",
  "required": ["status", "action_class", "reason"],
  "additionalProperties": true,
  "properties": {
    "status": {
      "type": "string",
      "enum": ["allowed", "allowed_with_constraints", "review_required", "deferred", "blocked", "human_only"]
    },
    "action_class": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9]*(\\.[a-z][a-z0-9]*)+$"
    },
    "reason": {
      "type": "string"
    },
    "constraints": {
      "type": "object",
      "description": "Machine-evaluable bounds for allowed_with_constraints decisions.",
      "additionalProperties": true,
      "properties": {
        "internal_only": { "type": "boolean" },
        "staging_only": { "type": "boolean" },
        "dry_run_only": { "type": "boolean" },
        "max_amount": { "type": "number", "minimum": 0 },
        "rate_limit": {
          "type": "object",
          "required": ["count", "window"],
          "additionalProperties": true,
          "properties": {
            "count": { "type": "integer", "minimum": 1 },
            "window": { "type": "string", "description": "Duration string, preferably ISO 8601." }
          }
        },
        "recipient_allowlist": {
          "type": "array",
          "items": { "type": "string" }
        },
        "domain_allowlist": {
          "type": "array",
          "items": { "type": "string" }
        },
        "expires_at": { "type": "string", "format": "date-time" },
        "requires_witness": { "type": "boolean" },
        "redaction_rules": {
          "type": "array",
          "items": { "type": "string" }
        }
      }
    },
    "observed": {
      "type": "object",
      "description": "Observed evidence/reversibility/approval inputs used by the gate.",
      "additionalProperties": true
    }
  }
}