{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://oracle.agentic-paybench.dev/schema/capability.schema.json",
  "title": "RailCapabilityCredential (Tier-2, ADR-007 intent-free)",
  "description": "A VCDM 2.0 Verifiable Credential carrying the Tier-2 factual set for one rail. Forbids scored/ranked output at any level (additionalProperties false).",
  "type": "object",
  "required": ["@context", "type", "issuer", "credentialSubject"],
  "additionalProperties": true,
  "properties": {
    "type": {
      "type": "array",
      "contains": { "const": "RailCapabilityCredential" }
    },
    "credentialSubject": {
      "type": "object",
      "required": ["railId", "railName", "settlesIndependently", "fees", "supportedAssets", "custodyModel", "bundle"],
      "additionalProperties": false,
      "properties": {
        "id": { "type": "string" },
        "railId": { "type": "string" },
        "railName": { "type": "string" },
        "settlesIndependently": { "type": "boolean" },
        "fees": {
          "type": "object",
          "required": ["model", "headlineFee"],
          "additionalProperties": false,
          "properties": {
            "model": { "type": "string" },
            "headlineFee": { "type": "string" }
          }
        },
        "supportedAssets": {
          "oneOf": [
            { "type": "array", "items": { "type": "string" } },
            { "const": "pending" }
          ]
        },
        "custodyModel": {
          "enum": ["custodial", "non_custodial", "hybrid", "pending"]
        },
        "bundle": {
          "type": "object",
          "required": ["authorizationModel", "disputeMechanism", "refundSupport", "sanctionsScreening"],
          "additionalProperties": false,
          "properties": {
            "authorizationModel": { "type": "string" },
            "disputeMechanism": { "type": "string" },
            "refundSupport": { "type": "string" },
            "sanctionsScreening": { "type": "string" }
          }
        }
      }
    }
  }
}