MCP Tools Reference: spanner.googleapis.com

Tool: create_database

Create a Spanner database in a given instance.

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

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

Input Schema

The request for CreateDatabase.

CreateDatabaseRequest

JSON representation 
{
  "parent": string,
  "createStatement": string,
  "extraStatements": [
    string
  ],
  "encryptionConfig": {
    object (EncryptionConfig)
  },
  "databaseDialect": enum (DatabaseDialect),
  "protoDescriptors": string
}
Fields
parent

string

Required. The name of the instance that will serve the new database. Values are of the form projects/<project>/instances/<instance>.
createStatement

string

Required. A CREATE DATABASE statement, which specifies the ID of the new database. The database ID must conform to the regular expression [a-z][a-z0-9_\-]*[a-z0-9] and be between 2 and 30 characters in length. If the database ID is a reserved word or if it contains a hyphen, the database ID must be enclosed in backticks (`).
extraStatements[]

string

Optional. A list of DDL statements to run inside the newly created database. Statements can create tables, indexes, etc. These statements execute atomically with the creation of the database: if there is an error in any statement, the database is not created.
encryptionConfig

object (EncryptionConfig)

Optional. The encryption configuration for the database. If this field is not specified, Cloud Spanner will encrypt/decrypt all data at rest using Google default encryption.
databaseDialect

enum (DatabaseDialect)

Optional. The dialect of the Cloud Spanner Database.
protoDescriptors

string (bytes format)

Optional. Proto descriptors used by CREATE/ALTER PROTO BUNDLE statements in 'extra_statements'. Contains a protobuf-serialized google.protobuf.FileDescriptorSet descriptor set. To generate it, install and run protoc with --include_imports and --descriptor_set_out. For example, to generate for moon/shot/app.proto, run

$protoc  --proto_path=/app_path --proto_path=/lib_path \
         --include_imports \
         --descriptor_set_out=descriptors.data \
         moon/shot/app.proto

For more details, see protobuffer self description.

A base64-encoded string.

EncryptionConfig

JSON representation 
{
  "kmsKeyName": string,
  "kmsKeyNames": [
    string
  ]
}
Fields
kmsKeyName

string

The Cloud KMS key to be used for encrypting and decrypting the database. Values are of the form projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>.
kmsKeyNames[]

string

Specifies the KMS configuration for one or more keys used to encrypt the database. Values are of the form projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>.

The keys referenced by kms_key_names must fully cover all regions of the database's instance configuration. Some examples:

  • For regional (single-region) instance configurations, specify a regional location KMS key.
  • For multi-region instance configurations of type GOOGLE_MANAGED, either specify a multi-region location KMS key or multiple regional location KMS keys that cover all regions in the instance configuration.
  • For an instance configuration of type USER_MANAGED, specify only regional location KMS keys to cover each region in the instance configuration. Multi-region location KMS keys aren't supported for USER_MANAGED type instance configurations.

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

A URL/resource name that uniquely identifies the type of the serialized protocol buffer message. This string must contain at least one "/" character. The last segment of the URL's path must represent the fully qualified name of the type (as in path/google.protobuf.Duration). The name should be in a canonical form (e.g., leading "." is not accepted).

In practice, teams usually precompile into the binary all types that they expect it to use in the context of Any. However, for URLs which use the scheme http, https, or no scheme, one can optionally set up a type server that maps type URLs to message definitions as follows:

  • If no scheme is provided, https is assumed.
  • An HTTP GET on the URL must yield a google.protobuf.Type value in binary format, or produce an error.
  • Applications are allowed to cache lookup results based on the URL, or have them precompiled into a binary to avoid any lookup. Therefore, binary compatibility needs to be preserved on changes to types. (Use versioned type names to manage breaking changes.)

Note: this functionality is not currently available in the official protobuf release, and it is not used for type URLs beginning with type.googleapis.com. As of May 2023, there are no widely used type server implementations and no plans to implement one.

Schemes other than http, https (or the empty scheme) might be used with implementation specific semantics.
value

string (bytes format)

Must be a valid serialized protocol buffer of the above specified type.

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

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