Changes Get

{
    "id": "ursy.finance:changes-get",
    "mcp_tool": "get_changes",
    "description": "Incrementally traverse detected source additions, revisions and withdrawals. Financial reference/information data only. Not personalised financial advice, not an execution venue, and not a guarantee of a tradable price.",
    "routes": [
        {
            "operation_id": "listChanges",
            "method": "GET",
            "url": "https://ursy.finance/wp-json/ursy-finance/v2/changes",
            "rate_limit": {
                "bucket": "metadata",
                "requests_per_minute": 120
            },
            "mcp_rate_limit": {
                "bucket": "mcp",
                "requests_per_minute": 60
            }
        }
    ],
    "input_schema": {
        "type": "object",
        "properties": {
            "id": {
                "type": "string",
                "maxLength": 160
            },
            "instrument_id": {
                "type": "string",
                "maxLength": 160
            },
            "source_id": {
                "type": "string",
                "maxLength": 160
            },
            "change_type": {
                "type": "string",
                "enum": [
                    "observation_added",
                    "observation_revised",
                    "observation_removed",
                    "instrument_added",
                    "instrument_changed",
                    "source_state_changed",
                    "rights_state_changed",
                    "registry_baseline_created"
                ]
            },
            "since": {
                "type": "string",
                "format": "date-time",
                "maxLength": 35
            },
            "cursor": {
                "type": "string",
                "maxLength": 2048,
                "description": "Preferred pagination: opaque continuation token returned by this operation; keep filters unchanged. Offset is for compatibility or simple browsing."
            },
            "limit": {
                "type": "integer",
                "minimum": 1,
                "maximum": 100,
                "default": 25
            },
            "offset": {
                "type": "integer",
                "minimum": 0,
                "maximum": 100000,
                "default": 0
            }
        },
        "required": [],
        "additionalProperties": false
    },
    "output_schema": {
        "type": "object",
        "properties": {
            "schema": {
                "type": "string"
            },
            "items": {
                "type": "array",
                "items": {
                    "type": "object",
                    "properties": {
                        "instrument_id": {
                            "type": "string"
                        },
                        "observation_date": {
                            "type": "string"
                        },
                        "old_value": {
                            "type": [
                                "number",
                                "null"
                            ]
                        },
                        "new_value": {
                            "type": [
                                "number",
                                "null"
                            ]
                        },
                        "detected_at": {
                            "type": "string"
                        },
                        "source_id": {
                            "type": "string"
                        },
                        "reason": {
                            "type": "string"
                        },
                        "publisher": {
                            "type": [
                                "string",
                                "null"
                            ]
                        }
                    },
                    "required": [
                        "instrument_id",
                        "observation_date",
                        "old_value",
                        "new_value",
                        "detected_at",
                        "source_id",
                        "reason",
                        "publisher"
                    ]
                }
            },
            "total": {
                "type": "integer"
            },
            "limit": {
                "type": "integer"
            },
            "offset": {
                "type": "integer"
            },
            "policy": {
                "type": "string"
            },
            "next_cursor": {
                "type": "string"
            },
            "has_more": {
                "type": "boolean"
            },
            "ordering": {
                "type": "string"
            }
        },
        "required": [
            "schema",
            "items",
            "total",
            "limit",
            "offset",
            "policy"
        ]
    },
    "data_class": "reference",
    "auth": "none",
    "read_only": true,
    "risk": "read_only_reference_information",
    "service_id": "ursy-finance",
    "parent_id": "",
    "name": "Changes Get",
    "summary": "Incrementally traverse detected source additions, revisions and withdrawals. Financial reference/information data only. Not personalised financial advice, not an execution venue, and not a guarantee of a tradable price.",
    "source_url": "https://ursy.finance/.well-known/ursy-capabilities.json",
    "source_type": "capability_manifest",
    "verified_at": "2026-09-26 06:31:27",
    "revision": "2c68d6e4475f356d91fb3586230d4d04d47abc2268f6d97fab71c1e201e241a0",
    "type": "capabilities",
    "source": {
        "url": "https://ursy.finance/.well-known/ursy-capabilities.json",
        "type": "capability_manifest"
    },
    "last_verified_at": "2026-09-26 06:31:27",
    "stale": true
}