MCP Tools Reference: mapstools.googleapis.com

Tool: resolve_maps_urls

Resolves a list of Google Maps URLs into canonical Google Maps Place IDs.

When to call this tool (CRITICAL):

  • Use this tool when the user provides one or more Google Maps sharing links or URLs (e.g. 'https://maps.app.goo.gl/...', 'https://www.google.com/maps/place/...', or 'https://maps.google.com/...') and you need to extract the underlying canonical Place IDs.
  • You can specify up to 20 URLs to resolve in a single batch request.

Input Requirements (CRITICAL):

  • urls (array of strings - MANDATORY): The list of Google Maps URLs to resolve. Each URL must be a valid, single-place Google Maps URL.

Save to Google Maps:

  • The response includes a save_to_maps_url field: a single Google Maps link containing all successfully resolved places.
  • When the user wants to save, share, or open the resolved places as a list in Google Maps (e.g. collecting places shared in a conversation), present this link to the user. Do NOT construct this link yourself.

Error Handling (CRITICAL):

  • This is a batch processing tool. A request might return "mixed results" (e.g. some URLs resolve successfully while others fail).
  • The output list of entities is guaranteed to map 1:1 with the input urls indices. A failed URL resolution will result in an empty Entity message (no fields are set) at its corresponding index in the entities list.
  • You MUST check the failed_requests map field in the response to identify which specific URL index failed. The key of failed_requests represents the 0-based index of the failed URL in the request. Do not assume the entire batch call failed because of a partial failure.

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

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

Input Schema

Request message for ResolveMapsUrls.

ResolveMapsUrlsRequest

JSON representation 
{
  "urls": [
    string
  ]
}
Fields
urls[]

string

Required. The Google Maps URLs to be resolved. Each URL should be a valid Google Maps URL, for example, https://maps.app.goo.gl/..., https://www.google.com/maps/place/..., or https://maps.google.com/.... Currently, only URLs pointing to a single place are supported. You may specify up to 20 URLs.

Output Schema

Response message for ResolveMapsUrls.

ResolveMapsUrlsResponse

JSON representation 
{
  "entities": [
    {
      object (Entity)
    }
  ],
  "failedRequests": {
    integer: {
      object (Status)
    },
    ...
  },
  "saveToMapsUrl": string
}
Fields
entities[]

object (Entity)

Output only. The list of resolved entities from the Google Maps URLs. Guaranteed to map 1:1 with the request urls indices. An empty message at index i (where no entity is set) indicates the resolution failed for that URL. If the resolution failed, please check the failed_requests field for the error status.
failedRequests

map (key: integer, value: object (Status))

Output only. A map communicating partial failures for the Google Maps URLs. The key is the index of the failed request in the urls field. The value is the error status detailing why the resolution failed.

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

string

Output only. A link to save all successfully resolved entities in Google Maps.

Entity

JSON representation 
{

  // Union field entity can be only one of the following:
  "place": string
  // End of list of possible types for union field entity.
}
Fields
Union field entity. The resolved entity type. entity can be only one of the following:
place

string

The resource name of the resolved place.

FailedRequestsEntry

JSON representation 
{
  "key": integer,
  "value": {
    object (Status)
  }
}
Fields
key

integer
value

object (Status)

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" }.

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.

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: ❌