MCP Tools Reference: vectorsearch.googleapis.com

Tool: get_data_object

Fetches a specific data object by its ID from a collection.

The following code sample shows how to use curl to call the get_data_object MCP tool.

Curl Request 
curl --location 'https://vectorsearch.googleapis.com/mcp' \
--header 'content-type: application/json' \
--header 'accept: application/json, text/event-stream' \
--data '{
  "method": "tools/call",
  "params": {
    "name": "get_data_object",
    "arguments": {
      // Provide these details according to the MCP tool specification.
    }
  },
  "jsonrpc": "2.0",
  "id": 1
}'

Input Schema

Request message for DataObjectService.GetDataObject.

GetDataObjectRequest

JSON representation 
{
  "name": string
}
Fields
name

string

Required. The name of the DataObject resource. Format: projects/{project}/locations/{location}/collections/{collection}/dataObjects/{dataObject}

Output Schema

A dataObject resource in Vector Search.

DataObject

JSON representation 
{
  "name": string,
  "dataObjectId": string,
  "createTime": string,
  "updateTime": string,
  "data": {
    object
  },
  "vectors": {
    string: {
      object (Vector)
    },
    ...
  },
  "etag": string
}
Fields
name

string

Identifier. The fully qualified resource name of the dataObject.

Format: projects/{project}/locations/{location}/collections/{collection}/dataObjects/{data_object_id} The data_object_id must be 1-63 characters long, and comply with RFC1035.
dataObjectId

string

Output only. The id of the dataObject.
createTime

string (Timestamp format)

Output only. Timestamp the dataObject was created at.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
updateTime

string (Timestamp format)

Output only. Timestamp the dataObject was last updated.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
data

object (Struct format)

Optional. The data of the dataObject.
vectors

map (key: string, value: object (Vector))

Optional. The vectors of the dataObject.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
etag

string

Optional. The etag of the dataObject.

Timestamp

JSON representation 
{
  "seconds": string,
  "nanos": integer
}
Fields
seconds

string (int64 format)

Represents seconds of UTC time since Unix epoch 1970-01-01T00:00:00Z. Must be between -62135596800 and 253402300799 inclusive (which corresponds to 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z).
nanos

integer

Non-negative fractions of a second at nanosecond resolution. This field is the nanosecond portion of the duration, not an alternative to seconds. Negative second values with fractions must still have non-negative nanos values that count forward in time. Must be between 0 and 999,999,999 inclusive.

Struct

JSON representation 
{
  "fields": {
    string: value,
    ...
  }
}
Fields
fields

map (key: string, value: value (Value format))

Unordered map of dynamically typed values.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.

FieldsEntry

JSON representation 
{
  "key": string,
  "value": value
}
Fields
key

string
value

value (Value format)

Value

JSON representation 
{

  // Union field kind can be only one of the following:
  "nullValue": null,
  "numberValue": number,
  "stringValue": string,
  "boolValue": boolean,
  "structValue": {
    object
  },
  "listValue": array
  // End of list of possible types for union field kind.
}
Fields
Union field kind. The kind of value. kind can be only one of the following:
nullValue

null

Represents a JSON null.
numberValue

number

Represents a JSON number. Must not be NaN, Infinity or -Infinity, since those are not supported in JSON. This also cannot represent large Int64 values, since JSON format generally does not support them in its number type.
stringValue

string

Represents a JSON string.
boolValue

boolean

Represents a JSON boolean (true or false literal in JSON).
structValue

object (Struct format)

Represents a JSON object.
listValue

array (ListValue format)

Represents a JSON array.

ListValue

JSON representation 
{
  "values": [
    value
  ]
}
Fields
values[]

value (Value format)

Repeated field of dynamically typed values.

VectorsEntry

JSON representation 
{
  "key": string,
  "value": {
    object (Vector)
  }
}
Fields
key

string
value

object (Vector)

Vector

JSON representation 
{

  // Union field vector_type can be only one of the following:
  "dense": {
    object (DenseVector)
  },
  "sparse": {
    object (SparseVector)
  }
  // End of list of possible types for union field vector_type.
}
Fields
Union field vector_type. The type of the vector. vector_type can be only one of the following:
dense

object (DenseVector)

A dense vector.
sparse

object (SparseVector)

A sparse vector.

DenseVector

JSON representation 
{
  "values": [
    number
  ]
}
Fields
values[]

number

Required. The values of the vector.

SparseVector

JSON representation 
{
  "values": [
    number
  ],
  "indices": [
    integer
  ]
}
Fields
values[]

number

Required. The values of the vector.
indices[]

integer

Required. The corresponding indices for the values.

NullValue

Represents a JSON null.

NullValue is a sentinel, using an enum with only one value to represent the null value for the Value type union.

A field of type NullValue with any value other than 0 is considered invalid. Most ProtoJSON serializers will emit a Value with a null_value set as a JSON null regardless of the integer value, and so will round trip to a 0 value.

Enums
NULL_VALUE Null value.

Tool Annotations

Tool annotations are sent to MCP clients to describe the basic risk of a given tool. Most clients treat these hints as untrusted, but they can be used to decide when a confirmation prompt might be sent to a user.

Along with the title string, the following boolean hints are defined as follows:

  • readOnlyHint: If true, the tool doesn't modify its environment. Default: false.
  • destructiveHint: If true, then the tool can perform destructive actions. If false, then the tool can only perform additive actions. Default: true.
  • idempotentHint: If true, then calling the tool repeatedly with the same arguments will have no additional effect on its environment. Default: false.
  • openWorldHint: If true, then the tool can interact with an 'open world' of external entities. If false, then the tool can only interact with internal entities. For example, a web search tool would be open world, while a memory tool would not be open world.

Destructive Hint: ❌ | Idempotent Hint: ✅ | Read Only Hint: ✅ | Open World Hint: ❌