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chat.spaces.list

Lists Google Chat spaces you belong to, with optional filtering and pagination, so you can find the right space before reading or managing its messages.

Instructions

Lists spaces the caller is a member of. Group chats and DMs aren't listed until the first message is sent. For an example, see List spaces. Supports the following types of authentication: - App authentication with the authorization scope: - https://www.googleapis.com/auth/chat.bot - User authentication wi [HTTP GET]. Returns the requested resource as JSON — request bodies are built from the typed parameters (typed flags win over the params map), or read whole from body_file Siblings over the same resource: completeImport, create, delete, findDirectMessage, findGroupChats, get, patch, search, setup.

Input Schema

Name	Required	Description
`query`	No	Extra KEY=VALUE query pairs for endpoints whose parameters Discovery does not describe.
`filter`	No	[query parameter] Optional. A query filter. You can filter spaces by the space type ([`space_type`](https://developers.google.com/workspace/chat/api/reference/rest/v1/spaces#spac
`params`	No	Parameter map merged into the request; typed parameters win.
`dry_run`	No	Return the request that would be sent, without sending it.
`pageSize`	No	[query parameter] Optional. The maximum number of spaces to return. The service might return fewer than this value. If unspecified, at most 100 spaces are returned. The maximum v
`body_file`	No	Read the request body from this file ('-' for stdin) instead of building one from the parameters.
`pageToken`	No	[query parameter] Optional. A page token, received from a previous list spaces call. Provide this parameter to retrieve the subsequent page. When paginating, the filter value sho

Output Schema

Name	Required	Description	Default
`spaces`	No
`nextPageToken`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed5 schema fields changedOct 26, 2026

changedInput schema / properties / filter / description

Previous value: -"Optional. A query filter. You can filter spaces by the space type ([`space_type`](https://developers.google.com/workspace/chat/api/reference/rest/v1/spaces#spac"New value: +"[query parameter] Optional. A query filter. You can filter spaces by the space type ([`space_type`](https://developers.google.com/workspace/chat/api/reference/rest/v1/spaces#spac"

changedInput schema / properties / pageSize / description

Previous value: -"Optional. The maximum number of spaces to return. The service might return fewer than this value. If unspecified, at most 100 spaces are returned. The maximum v"New value: +"[query parameter] Optional. The maximum number of spaces to return. The service might return fewer than this value. If unspecified, at most 100 spaces are returned. The maximum v"

addedInput schema / properties / pageSize / format
```
Added value: +"int32"
```

changedInput schema / properties / pageToken / description

Previous value: -"Optional. A page token, received from a previous list spaces call. Provide this parameter to retrieve the subsequent page. When paginating, the filter value sho"New value: +"[query parameter] Optional. A page token, received from a previous list spaces call. Provide this parameter to retrieve the subsequent page. When paginating, the filter value sho"

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "nextPageToken": {
+      "type": "string"
+    },
+    "spaces": {
+      "items": {
+        "properties": {
+          "accessSettings": {
+            "properties": {
+              "accessPermissionSettings": {
+                "properties": {
+                  "discoverSpaceSetting": {
+                    "type": "object"
+                  },
+                  "joinSpaceSetting": {
+                    "type": "object"
+                  },
+                  "viewSpaceMembershipSetting": {
+                    "type": "object"
+                  }
+                },
+                "type": "object"
+              },
+              "accessState": {
+                "enum": [
+                  "ACCESS_STATE_UNSPECIFIED",
+                  "PRIVATE",
+                  "DISCOVERABLE"
+                ],
+                "type": "string"
+              },
+              "audience": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "adminInstalled": {
+            "type": "boolean"
+          },
+          "createTime": {
+            "type": "string"
+          },
+          "customer": {
+            "type": "string"
+          },
+          "displayName": {
+            "type": "string"
+          },
+          "externalUserAllowed": {
+            "type": "boolean"
+          },
+          "importMode": {
+            "type": "boolean"
+          },
+          "importModeExpireTime": {
+            "type": "string"
+          },
+          "lastActiveTime": {
+            "type": "string"
+          },
+          "membershipCount": {
+            "properties": {
+              "joinedDirectHumanUserCount": {
+                "type": "integer"
+              },
+              "joinedGroupCount": {
+                "type": "integer"
+              }
+            },
+            "type": "object"
+          },
+          "name": {
+            "type": "string"
+          },
+          "permissionSettings": {
+            "properties": {
+              "manageApps": {
+                "properties": {
+                  "assistantManagersAllowed": {
+                    "type": "boolean"
+                  },
+                  "managersAllowed": {
+                    "type": "boolean"
+                  },
+                  "membersAllowed": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              },
+              "manageMembersAndGroups": {
+                "properties": {
+                  "assistantManagersAllowed": {
+                    "type": "boolean"
+                  },
+                  "managersAllowed": {
+                    "type": "boolean"
+                  },
+                  "membersAllowed": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              },
+              "manageWebhooks": {
+                "properties": {
+                  "assistantManagersAllowed": {
+                    "type": "boolean"
+                  },
+                  "managersAllowed": {
+                    "type": "boolean"
+                  },
+                  "membersAllowed": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              },
+              "modifySpaceDetails": {
+                "properties": {
+                  "assistantManagersAllowed": {
+                    "type": "boolean"
+                  },
+                  "managersAllowed": {
+                    "type": "boolean"
+                  },
+                  "membersAllowed": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              },
+              "postMessages": {
+                "properties": {
+                  "assistantManagersAllowed": {
+                    "type": "boolean"
+                  },
+                  "managersAllowed": {
+                    "type": "boolean"
+                  },
+                  "membersAllowed": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              },
+              "replyMessages": {
+                "properties": {
+                  "assistantManagersAllowed": {
+                    "type": "boolean"
+                  },
+                  "managersAllowed": {
+                    "type": "boolean"
+                  },
+                  "membersAllowed": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              },
+              "toggleHistory": {
+                "properties": {
+                  "assistantManagersAllowed": {
+                    "type": "boolean"
+                  },
+                  "managersAllowed": {
+                    "type": "boolean"
+                  },
+                  "membersAllowed": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              },
+              "useAtMentionAll": {
+                "properties": {
+                  "assistantManagersAllowed": {
+                    "type": "boolean"
+                  },
+                  "managersAllowed": {
+                    "type": "boolean"
+                  },
+                  "membersAllowed": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              },
+              "viewSpaceMembership": {
+                "properties": {
+                  "assistantManagersAllowed": {
+                    "type": "boolean"
+                  },
+                  "managersAllowed": {
+                    "type": "boolean"
+                  },
+                  "membersAllowed": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              }
+            },
+            "type": "object"
+          },
+          "predefinedPermissionSettings": {
+            "enum": [
+              "PREDEFINED_PERMISSION_SETTINGS_UNSPECIFIED",
+              "COLLABORATION_SPACE",
+              "ANNOUNCEMENT_SPACE"
+            ],
+            "type": "string"
+          },
+          "singleUserBotDm": {
+            "type": "boolean"
+          },
+          "spaceDetails": {
+            "properties": {
+              "description": {
+                "type": "string"
+              },
+              "guidelines": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "spaceHistoryState": {
+            "enum": [
+              "HISTORY_STATE_UNSPECIFIED",
+              "HISTORY_OFF",
+              "HISTORY_ON"
+            ],
+            "type": "string"
+          },
+          "spaceThreadingState": {
+            "enum": [
+              "SPACE_THREADING_STATE_UNSPECIFIED",
+              "THREADED_MESSAGES",
+              "GROUPED_MESSAGES",
+              "UNTHREADED_MESSAGES"
+            ],
+            "type": "string"
+          },
+          "spaceType": {
+            "enum": [
+              "SPACE_TYPE_UNSPECIFIED",
+              "SPACE",
+              "GROUP_CHAT",
+              "DIRECT_MESSAGE"
+            ],
+            "type": "string"
+          },
+          "spaceUri": {
+            "type": "string"
+          },
+          "threaded": {
+            "type": "boolean"
+          },
+          "type": {
+            "enum": [
+              "TYPE_UNSPECIFIED",
+              "ROOM",
+              "DM"
+            ],
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "type": "object"
+}

First observedOct 26, 2026

TDQS

A3.6/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description does real work: it discloses it is an HTTP GET (read-only), the required auth scopes, and the important caveat that empty group chats/DMs are omitted. The generic boilerplate about request bodies/'body_file' is odd for a GET but does not undermine the behavioral disclosure.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The key listing behavior is front-loaded and useful, but the body is cluttered with generic boilerplate ('request bodies are built from the typed parameters...', 'body_file') that is irrelevant to a list operation and dilutes the message.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return values need not be explained, and auth plus listing caveats are covered. The main gap is the absence of sibling routing guidance, but for a read-only list tool with full schema coverage this is nearly complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so filter, pageSize, and pageToken are already documented in the schema. The description adds no syntax or semantics for these parameters beyond what is provided structurally, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource with a scoping qualifier: 'Lists spaces the caller is a member of.' The exclusion of group chats/DMs until first message adds precision. It names siblings but does not use them to differentiate the purpose, so it stops short of a 5.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Discloses a real usage constraint (group chats and DMs won't appear until a message is sent), which implies when to expect certain results. However, it never says when to prefer findGroupChats, findDirectMessage, or search over this tool - the sibling list is presented without routing guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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