Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "anyOf": [
+    {
+      "additionalProperties": {},
+      "properties": {
+        "checked_scope": {
+          "type": "string"
+        },
+        "count": {
+          "type": "number"
+        },
+        "disclaimer": {
+          "type": "string"
+        },
+        "license_note": {
+          "type": "string"
+        },
+        "national_rules": {},
+        "out_of_scope": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "provenance": {
+          "description": "Freshness receipts for every upstream source used.",
+          "items": {
+            "additionalProperties": {},
+            "description": "Freshness receipt for one upstream source.",
+            "properties": {
+              "content_sha256": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "fetch_status": {
+                "description": "found / empty / stale / unavailable / unsupported (see catalog fetch_status_values).",
+                "enum": [
+                  "found",
+                  "empty",
+                  "stale",
+                  "unavailable",
+                  "unsupported"
+                ],
+                "type": "string"
+              },
+              "parser_version": {
+                "type": "string"
+              },
+              "processed_by": {
+                "type": "string"
+              },
+              "retrieved_at": {
+                "description": "When this service retrieved the upstream data (null if unknown).",
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "source": {
+                "additionalProperties": {},
+                "description": "Publisher and URL of the upstream document or dataset.",
+                "properties": {
+                  "publisher": {
+                    "type": "string"
+                  },
+                  "url": {
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "publisher",
+                  "url"
+                ],
+                "type": "object"
+              },
+              "upstream_updated_at": {
+                "description": "Update time stated by the upstream, or null when it states none.",
+                "type": [
+                  "string",
+                  "null"
+                ]
+              }
+            },
+            "required": [
+              "source",
+              "upstream_updated_at",
+              "retrieved_at",
+              "content_sha256",
+              "parser_version",
+              "fetch_status",
+              "processed_by"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "receipt_id": {
+          "description": "Receipt id of the settled paid call (\"rcpt_\" + 64 hex). Use with get_receipt.",
+          "type": "string"
+        },
+        "responded_at": {
+          "type": "string"
+        },
+        "results": {
+          "description": "One result per item, in input order.",
+          "items": {
+            "additionalProperties": {},
+            "properties": {
+              "as_of": {
+                "type": "string"
+              },
+              "as_of_codes": {
+                "description": "Codes valid on as_of, with names, JMA area and J-LIS certificate availability.",
+                "items": {
+                  "additionalProperties": {},
+                  "properties": {
+                    "code": {
+                      "type": "string"
+                    },
+                    "convenience_store_certificates": {
+                      "additionalProperties": {},
+                      "properties": {
+                        "status": {
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "status"
+                      ],
+                      "type": "object"
+                    },
+                    "jma_area": {
+                      "additionalProperties": {},
+                      "properties": {},
+                      "type": "object"
+                    }
+                  },
+                  "required": [
+                    "code",
+                    "jma_area",
+                    "convenience_store_certificates"
+                  ],
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "changes": {
+                "items": {
+                  "additionalProperties": {},
+                  "properties": {},
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "input": {
+                "additionalProperties": {},
+                "description": "The query as understood (code or prefecture and name, and as_of).",
+                "properties": {
+                  "as_of": {
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "as_of"
+                ],
+                "type": "object"
+              },
+              "status": {
+                "description": "mapped / split_candidates / unknown / invalid.",
+                "enum": [
+                  "mapped",
+                  "split_candidates",
+                  "unknown",
+                  "invalid"
+                ],
+                "type": "string"
+              }
+            },
+            "required": [
+              "input",
+              "status",
+              "as_of",
+              "as_of_codes",
+              "changes"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "retrieved_at": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "source": {
+          "type": "string"
+        },
+        "status_values": {
+          "additionalProperties": {
+            "type": "string"
+          },
+          "propertyNames": {
+            "type": "string"
+          },
+          "type": "object"
+        },
+        "summary": {
+          "additionalProperties": {},
+          "properties": {
+            "invalid": {
+              "type": "number"
+            },
+            "mapped": {
+              "type": "number"
+            },
+            "split_candidates": {
+              "type": "number"
+            },
+            "unknown": {
+              "type": "number"
+            }
+          },
+          "required": [
+            "mapped",
+            "split_candidates",
+            "unknown",
+            "invalid"
+          ],
+          "type": "object"
+        },
+        "terms": {
+          "description": "URL of the terms of service.",
+          "type": "string"
+        }
+      },
+      "required": [
+        "receipt_id",
+        "count",
+        "summary",
+        "results",
+        "national_rules",
+        "out_of_scope",
+        "status_values",
+        "disclaimer",
+        "checked_scope",
+        "source",
+        "license_note",
+        "provenance",
+        "retrieved_at",
+        "responded_at",
+        "terms"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": {},
+      "description": "x402 PaymentRequired (returned with isError true when payment is required or was not accepted).",
+      "properties": {
+        "accepts": {
+          "description": "Payment options (x402 v2 PaymentRequirements).",
+          "items": {
+            "additionalProperties": {},
+            "properties": {
+              "network": {
+                "type": "string"
+              },
+              "scheme": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "scheme",
+              "network"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "error": {
+          "type": "string"
+        },
+        "resource": {
+          "additionalProperties": {},
+          "properties": {
+            "url": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "url"
+          ],
+          "type": "object"
+        },
+        "x402Version": {
+          "type": "number"
+        }
+      },
+      "required": [
+        "x402Version",
+        "accepts"
+      ],
+      "type": "object"
+    }
+  ],
+  "description": "Either the paid result (with receipt_id) or, with isError true, the x402 PaymentRequired to pay and retry.",
+  "properties": {},
+  "type": "object"
+}