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people.otherContacts.list

Lists auto-created contacts that are not in a contact group, with pagination and sync support for retrieving changes.

Instructions

List all "Other contacts", that is contacts that are not in a contact group. "Other contacts" are typically auto created contacts from interactions. Sync tokens expire 7 days after the full sync. A request with an expired sync token will get an error with an google.rpc.ErrorInfo with reason "EXPIRED_SYNC_TOKEN". In the case of such an error clients should make a full sync request without a sync_token. The first page of a full sync request has an additional quota. If the quota is exceeded, a 429 error will be returned. This quota is fi [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: copyOtherContactToMyContactsGroup, search.

Input Schema

Name	Required	Description
`query`	No	Extra KEY=VALUE query pairs for endpoints whose parameters Discovery does not describe.
`params`	No	Parameter map merged into the request; typed parameters win.
`dry_run`	No	Return the request that would be sent, without sending it.
`sources`	No
`pageSize`	No	[query parameter] Optional. The number of "Other contacts" to include in the response. Valid values are between 1 and 1000, inclusive. Defaults to 100 if not set or set to 0.
`readMask`	No	[query parameter] Required. A field mask to restrict which fields on each person are returned. Multiple fields can be specified by separating them with commas. What values are va
`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 response `next_page_token`. Provide this to retrieve the subsequent page. When paginating, all other parameters
`syncToken`	No	[query parameter] Optional. A sync token, received from a previous response `next_sync_token` Provide this to retrieve only the resources changed since the last request. When syn
`requestSyncToken`	No	[query parameter] Optional. Whether the response should return `next_sync_token` on the last page of results. It can be used to get incremental changes since the last request by

Output Schema

Name	Required	Description	Default
`totalSize`	No
`nextPageToken`	No
`nextSyncToken`	No
`otherContacts`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed9 schema fields changedOct 26, 2026

changedInput schema / properties / pageSize / description

Previous value: -"Optional. The number of \"Other contacts\" to include in the response. Valid values are between 1 and 1000, inclusive. Defaults to 100 if not set or set to 0."New value: +"[query parameter] Optional. The number of \"Other contacts\" to include in the response. Valid values are between 1 and 1000, inclusive. Defaults to 100 if not set or set to 0."

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

changedInput schema / properties / pageToken / description

Previous value: -"Optional. A page token, received from a previous response `next_page_token`. Provide this to retrieve the subsequent page. When paginating, all other parameters"New value: +"[query parameter] Optional. A page token, received from a previous response `next_page_token`. Provide this to retrieve the subsequent page. When paginating, all other parameters"

changedInput schema / properties / readMask / description

Previous value: -"Required. A field mask to restrict which fields on each person are returned. Multiple fields can be specified by separating them with commas. What values are va"New value: +"[query parameter] Required. A field mask to restrict which fields on each person are returned. Multiple fields can be specified by separating them with commas. What values are va"

addedInput schema / properties / readMask / format
```
Added value: +"google-fieldmask"
```

changedInput schema / properties / requestSyncToken / description

Previous value: -"Optional. Whether the response should return `next_sync_token` on the last page of results. It can be used to get incremental changes since the last request by "New value: +"[query parameter] Optional. Whether the response should return `next_sync_token` on the last page of results. It can be used to get incremental changes since the last request by "

changedInput schema / properties / sources / items / description

Previous value: -"Optional. A mask of what source types to return. Defaults to READ_SOURCE_TYPE_CONTACT if not set. Possible values for this field are: * READ_SOURCE_TYPE_CONTACT"New value: +"[query parameter] Optional. A mask of what source types to return. Defaults to READ_SOURCE_TYPE_CONTACT if not set. Possible values for this field are: * READ_SOURCE_TYPE_CONTACT Values: `READ_SOURCE_TYPE_UNSPECIFIED` = Unspecified.; `READ_SOURCE_TYPE_PROFILE` = Returns SourceType.ACCOUNT, SourceType.DOMAIN_PROFILE, and SourceType.PROFILE.; `READ_SOURCE_TYPE_CONTACT` = Returns SourceType.CONTACT.; `READ_SOURCE_TYPE_DOMAIN_CONTACT` = Returns SourceType.DOMAIN_CONTACT.; `READ_SOURCE_TYPE_OTHER_CONTACT` = Returns SourceType.OTHER_CONTACT.."

changedInput schema / properties / syncToken / description

Previous value: -"Optional. A sync token, received from a previous response `next_sync_token` Provide this to retrieve only the resources changed since the last request. When syn"New value: +"[query parameter] Optional. A sync token, received from a previous response `next_sync_token` Provide this to retrieve only the resources changed since the last request. When syn"

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "nextPageToken": {
+      "type": "string"
+    },
+    "nextSyncToken": {
+      "type": "string"
+    },
+    "otherContacts": {
+      "items": {
+        "properties": {
+          "addresses": {
+            "items": {
+              "properties": {
+                "city": {
+                  "type": "string"
+                },
+                "country": {
+                  "type": "string"
+                },
+                "countryCode": {
+                  "type": "string"
+                },
+                "extendedAddress": {
+                  "type": "string"
+                },
+                "formattedType": {
+                  "type": "string"
+                },
+                "formattedValue": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "poBox": {
+                  "type": "string"
+                },
+                "postalCode": {
+                  "type": "string"
+                },
+                "region": {
+                  "type": "string"
+                },
+                "streetAddress": {
+                  "type": "string"
+                },
+                "type": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "ageRange": {
+            "enum": [
+              "AGE_RANGE_UNSPECIFIED",
+              "LESS_THAN_EIGHTEEN",
+              "EIGHTEEN_TO_TWENTY",
+              "TWENTY_ONE_OR_OLDER"
+            ],
+            "type": "string"
+          },
+          "ageRanges": {
+            "items": {
+              "properties": {
+                "ageRange": {
+                  "enum": [
+                    "AGE_RANGE_UNSPECIFIED",
+                    "LESS_THAN_EIGHTEEN",
+                    "EIGHTEEN_TO_TWENTY",
+                    "TWENTY_ONE_OR_OLDER"
+                  ],
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "biographies": {
+            "items": {
+              "properties": {
+                "contentType": {
+                  "enum": [
+                    "CONTENT_TYPE_UNSPECIFIED",
+                    "TEXT_PLAIN",
+                    "TEXT_HTML"
+                  ],
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "birthdays": {
+            "items": {
+              "properties": {
+                "date": {
+                  "properties": {
+                    "day": {
+                      "type": "integer"
+                    },
+                    "month": {
+                      "type": "integer"
+                    },
+                    "year": {
+                      "type": "integer"
+                    }
+                  },
+                  "type": "object"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "text": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "braggingRights": {
+            "items": {
+              "properties": {
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "calendarUrls": {
+            "items": {
+              "properties": {
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "url": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "clientData": {
+            "items": {
+              "properties": {
+                "key": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "coverPhotos": {
+            "items": {
+              "properties": {
+                "default": {
+                  "type": "boolean"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "url": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "emailAddresses": {
+            "items": {
+              "properties": {
+                "displayName": {
+                  "type": "string"
+                },
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "etag": {
+            "type": "string"
+          },
+          "events": {
+            "items": {
+              "properties": {
+                "date": {
+                  "properties": {
+                    "day": {
+                      "type": "integer"
+                    },
+                    "month": {
+                      "type": "integer"
+                    },
+                    "year": {
+                      "type": "integer"
+                    }
+                  },
+                  "type": "object"
+                },
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "externalIds": {
+            "items": {
+              "properties": {
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "fileAses": {
+            "items": {
+              "properties": {
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "genders": {
+            "items": {
+              "properties": {
+                "addressMeAs": {
+                  "type": "string"
+                },
+                "formattedValue": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "imClients": {
+            "items": {
+              "properties": {
+                "formattedProtocol": {
+                  "type": "string"
+                },
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "protocol": {
+                  "type": "string"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "username": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "interests": {
+            "items": {
+              "properties": {
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "locales": {
+            "items": {
+              "properties": {
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "locations": {
+            "items": {
+              "properties": {
+                "buildingId": {
+                  "type": "string"
+                },
+                "current": {
+                  "type": "boolean"
+                },
+                "deskCode": {
+                  "type": "string"
+                },
+                "floor": {
+                  "type": "string"
+                },
+                "floorSection": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "memberships": {
+            "items": {
+              "properties": {
+                "contactGroupMembership": {
+                  "properties": {
+                    "contactGroupId": {
+                      "type": "string"
+                    },
+                    "contactGroupResourceName": {
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                },
+                "domainMembership": {
+                  "properties": {
+                    "inViewerDomain": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "metadata": {
+            "properties": {
+              "deleted": {
+                "type": "boolean"
+              },
+              "linkedPeopleResourceNames": {
+                "items": {
+                  "type": "string"
+                },
+                "type": "array"
+              },
+              "objectType": {
+                "enum": [
+                  "OBJECT_TYPE_UNSPECIFIED",
+                  "PERSON",
+                  "PAGE"
+                ],
+                "type": "string"
+              },
+              "previousResourceNames": {
+                "items": {
+                  "type": "string"
+                },
+                "type": "array"
+              },
+              "sources": {
+                "items": {
+                  "properties": {
+                    "etag": {
+                      "type": "string"
+                    },
+                    "id": {
+                      "type": "string"
+                    },
+                    "profileMetadata": {
+                      "type": "object"
+                    },
+                    "type": {
+                      "enum": [
+                        "SOURCE_TYPE_UNSPECIFIED",
+                        "ACCOUNT",
+                        "PROFILE",
+                        "DOMAIN_PROFILE",
+                        "CONTACT",
+                        "OTHER_CONTACT",
+                        "DOMAIN_CONTACT"
+                      ],
+                      "type": "string"
+                    },
+                    "updateTime": {
+                      "type": "string"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": "array"
+              }
+            },
+            "type": "object"
+          },
+          "miscKeywords": {
+            "items": {
+              "properties": {
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "enum": [
+                    "TYPE_UNSPECIFIED",
+                    "OUTLOOK_BILLING_INFORMATION",
+                    "OUTLOOK_DIRECTORY_SERVER",
+                    "OUTLOOK_KEYWORD",
+                    "OUTLOOK_MILEAGE",
+                    "OUTLOOK_PRIORITY",
+                    "OUTLOOK_SENSITIVITY",
+                    "OUTLOOK_SUBJECT",
+                    "OUTLOOK_USER",
+                    "HOME",
+                    "WORK",
+                    "OTHER"
+                  ],
+                  "type": "string"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "names": {
+            "items": {
+              "properties": {
+                "displayName": {
+                  "type": "string"
+                },
+                "displayNameLastFirst": {
+                  "type": "string"
+                },
+                "familyName": {
+                  "type": "string"
+                },
+                "givenName": {
+                  "type": "string"
+                },
+                "honorificPrefix": {
+                  "type": "string"
+                },
+                "honorificSuffix": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "middleName": {
+                  "type": "string"
+                },
+                "phoneticFamilyName": {
+                  "type": "string"
+                },
+                "phoneticFullName": {
+                  "type": "string"
+                },
+                "phoneticGivenName": {
+                  "type": "string"
+                },
+                "phoneticHonorificPrefix": {
+                  "type": "string"
+                },
+                "phoneticHonorificSuffix": {
+                  "type": "string"
+                },
+                "phoneticMiddleName": {
+                  "type": "string"
+                },
+                "unstructuredName": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "nicknames": {
+            "items": {
+              "properties": {
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "enum": [
+                    "DEFAULT",
+                    "MAIDEN_NAME",
+                    "INITIALS",
+                    "GPLUS",
+                    "OTHER_NAME",
+                    "ALTERNATE_NAME",
+                    "SHORT_NAME"
+                  ],
+                  "type": "string"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "occupations": {
+            "items": {
+              "properties": {
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "organizations": {
+            "items": {
+              "properties": {
+                "costCenter": {
+                  "type": "string"
+                },
+                "current": {
+                  "type": "boolean"
+                },
+                "department": {
+                  "type": "string"
+                },
+                "domain": {
+                  "type": "string"
+                },
+                "endDate": {
+                  "properties": {
+                    "day": {
+                      "type": "integer"
+                    },
+                    "month": {
+                      "type": "integer"
+                    },
+                    "year": {
+                      "type": "integer"
+                    }
+                  },
+                  "type": "object"
+                },
+                "formattedType": {
+                  "type": "string"
+                },
+                "fullTimeEquivalentMillipercent": {
+                  "type": "integer"
+                },
+                "jobDescription": {
+                  "type": "string"
+                },
+                "location": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "name": {
+                  "type": "string"
+                },
+                "phoneticName": {
+                  "type": "string"
+                },
+                "startDate": {
+                  "properties": {
+                    "day": {
+                      "type": "integer"
+                    },
+                    "month": {
+                      "type": "integer"
+                    },
+                    "year": {
+                      "type": "integer"
+                    }
+                  },
+                  "type": "object"
+                },
+                "symbol": {
+                  "type": "string"
+                },
+                "title": {
+                  "type": "string"
+                },
+                "type": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "phoneNumbers": {
+            "items": {
+              "properties": {
+                "canonicalForm": {
+                  "type": "string"
+                },
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "photos": {
+            "items": {
+              "properties": {
+                "default": {
+                  "type": "boolean"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "url": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "relations": {
+            "items": {
+              "properties": {
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "person": {
+                  "type": "string"
+                },
+                "type": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "relationshipInterests": {
+            "items": {
+              "properties": {
+                "formattedValue": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "relationshipStatuses": {
+            "items": {
+              "properties": {
+                "formattedValue": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
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+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "residences": {
+            "items": {
+              "properties": {
+                "current": {
+                  "type": "boolean"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "resourceName": {
+            "type": "string"
+          },
+          "sipAddresses": {
+            "items": {
+              "properties": {
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "skills": {
+            "items": {
+              "properties": {
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "taglines": {
+            "items": {
+              "properties": {
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "urls": {
+            "items": {
+              "properties": {
+                "formattedType": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "userDefined": {
+            "items": {
+              "properties": {
+                "key": {
+                  "type": "string"
+                },
+                "metadata": {
+                  "properties": {
+                    "primary": {
+                      "type": "boolean"
+                    },
+                    "source": {
+                      "type": "object"
+                    },
+                    "sourcePrimary": {
+                      "type": "boolean"
+                    },
+                    "verified": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "value": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "totalSize": {
+      "type": "integer"
+    }
+  },
+  "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 carries the behavioral disclosure burden and does add useful context: sync-token expiry and recovery, first-page quota and 429 behavior, and HTTP GET/JSON semantics. It lacks an explicit read-only statement and contains a truncated sentence ('This quota is fi'), but overall gives substantial operational context.

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 purpose is front-loaded, and the sync-token/quota details are relevant. However, the description mixes API documentation with generic wrapper text about HTTP GET, body_file, and typed parameters overriding the params map, and includes a truncated sentence, making it noisier than necessary for tool selection.

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?

Given 10 parameters and an existing output schema, the description adds key sync-token and quota caveats plus GET semantics, while the schema covers the remaining parameter details. It is largely complete for invocation, though it omits explicit guidance for choosing this over search and leaves some text truncated.

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 description coverage is 90%, and the schema already documents sources, pageSize, readMask, pageToken, syncToken, and requestSyncToken. The description mentions sync_token and generic params/body_file mechanics but adds little precise parameter meaning beyond what the schema provides, 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 'List all Other contacts' and defines them as contacts not in a contact group that are typically auto-created from interactions. This is a specific verb and resource with scope, but it names siblings without explaining how this differs from search or copy operations.

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?

Provides operational guidance for sync tokens, including 7-day expiry, EXPIRED_SYNC_TOKEN recovery via full sync, first-page quota, and 429 handling. However, it does not explicitly say when to use this list tool versus people.otherContacts.search or copyOtherContactToMyContactsGroup; siblings are listed without selection criteria.

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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