MCP Tools Reference: managedkafka

Tool: create_cluster

Create a new cluster for Google Cloud Managed service for Apache Kafka.

This tool returns a long-running operation (LRO) that you can poll using the get_operation tool to track the cluster creation status. Cluster creation can take 30 minutes or longer.

Important Notes:

• Do not create the cluster without getting all of the required parameters from the user.

The following sample demonstrate how to use curl to invoke the create_cluster MCP tool.

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

Input Schema

Request message for CreateCluster.

CreateClusterRequest

JSON representation

{ "parent": string, "clusterId": string, "vcpuCount": string, "memoryBytes": string, "subnets": [ string ], "labels": { string: string, ... }, "caPools": [ string ], // Union field _rebalance_mode can be only one of the following: "rebalanceMode": enum (Mode) // End of list of possible types for union field _rebalance_mode. // Union field _kms_key can be only one of the following: "kmsKey": string // End of list of possible types for union field _kms_key. // Union field _ssl_principal_mapping_rules can be only one of the following: "sslPrincipalMappingRules": string // End of list of possible types for union field _ssl_principal_mapping_rules. }

Fields
parent	string Required. The parent region in which to create the cluster. Format: projects/{project}/locations/{location}
clusterId	string Required. The ID to use for the cluster, which will become the final component of the cluster's name.
vcpuCount	string (int64 format) Required. The number of vCPUs to provision for the cluster. Minimum: 3.
memoryBytes	string (int64 format) Required. The memory to provision for the cluster in bytes. Minimum: 3 GiB.
subnets[]	string Required. The VPC subnets for the cluster. Format: projects/{project}/regions/{region}/subnetworks/{subnet_id}
labels	map (key: string, value: string) Optional. Labels for the cluster. An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
caPools[]	string Optional. A list of CA pools to pull CA certificates from.
Union field _rebalance_mode. _rebalance_mode can be only one of the following:
rebalanceMode	enum (Mode) Optional. The rebalance mode for the cluster. If not specified, AUTO_REBALANCE_ON_SCALE_UP will be used.
Union field _kms_key. _kms_key can be only one of the following:
kmsKey	string Optional. The Cloud KMS Key name to use for encryption.
Union field _ssl_principal_mapping_rules. _ssl_principal_mapping_rules can be only one of the following:
sslPrincipalMappingRules	string Optional. A list of rules for mapping from SSL principal names to short names.

LabelsEntry

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

Fields
key	string
value	string

Output Schema

This resource represents a long-running operation that is the result of a network API call.

Operation

JSON representation
{ "name": string, "metadata": { "@type": string, field1: ..., ... }, "done": boolean, // Union field result can be only one of the following: "error": { object (Status) }, "response": { "@type": string, field1: ..., ... } // End of list of possible types for union field result. }

Fields
name	string The server-assigned name, which is only unique within the same service that originally returns it. If you use the default HTTP mapping, the name should be a resource name ending with operations/{unique_id}.
metadata	object Service-specific metadata associated with the operation. It typically contains progress information and common metadata such as create time. Some services might not provide such metadata. Any method that returns a long-running operation should document the metadata type, if any. An object containing fields of an arbitrary type. An additional field "@type" contains a URI identifying the type. Example: { "id": 1234, "@type": "types.example.com/standard/id" }.
done	boolean If the value is false, it means the operation is still in progress. If true, the operation is completed, and either error or response is available.
Union field result. The operation result, which can be either an error or a valid response. If done == false, neither error nor response is set. If done == true, exactly one of error or response can be set. Some services might not provide the result. result can be only one of the following:
error	object (Status) The error result of the operation in case of failure or cancellation.
response	object The normal, successful response of the operation. If the original method returns no data on success, such as Delete, the response is google.protobuf.Empty. If the original method is standard Get/Create/Update, the response should be the resource. For other methods, the response should have the type XxxResponse, where Xxx is the original method name. For example, if the original method name is TakeSnapshot(), the inferred response type is TakeSnapshotResponse. An object containing fields of an arbitrary type. An additional field "@type" contains a URI identifying the type. Example: { "id": 1234, "@type": "types.example.com/standard/id" }.

Any

JSON representation
{ "typeUrl": string, "value": string }

Fields
typeUrl	string Identifies the type of the serialized Protobuf message with a URI reference consisting of a prefix ending in a slash and the fully-qualified type name. Example: type.googleapis.com/google.protobuf.StringValue This string must contain at least one / character, and the content after the last / must be the fully-qualified name of the type in canonical form, without a leading dot. Do not write a scheme on these URI references so that clients do not attempt to contact them. The prefix is arbitrary and Protobuf implementations are expected to simply strip off everything up to and including the last / to identify the type. type.googleapis.com/ is a common default prefix that some legacy implementations require. This prefix does not indicate the origin of the type, and URIs containing it are not expected to respond to any requests. All type URL strings must be legal URI references with the additional restriction (for the text format) that the content of the reference must consist only of alphanumeric characters, percent-encoded escapes, and characters in the following set (not including the outer backticks): /-.~_!$&()*+,;=. Despite our allowing percent encodings, implementations should not unescape them to prevent confusion with existing parsers. For example, type.googleapis.com%2FFoo should be rejected. In the original design of Any, the possibility of launching a type resolution service at these type URLs was considered but Protobuf never implemented one and considers contacting these URLs to be problematic and a potential security issue. Do not attempt to contact type URLs.
value	string (bytes format) Holds a Protobuf serialization of the type described by type_url. A base64-encoded string.

Status

JSON representation
{ "code": integer, "message": string, "details": [ { "@type": string, field1: ..., ... } ] }

Fields
code	integer The status code, which should be an enum value of google.rpc.Code.
message	string A developer-facing error message, which should be in English. Any user-facing error message should be localized and sent in the google.rpc.Status.details field, or localized by the client.
details[]	object A list of messages that carry the error details. There is a common set of message types for APIs to use. An object containing fields of an arbitrary type. An additional field "@type" contains a URI identifying the type. Example: { "id": 1234, "@type": "types.example.com/standard/id" }.

Tool Annotations

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