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Microsoft 365 MCP Server

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Hybrid

create-reply-all-draft

create-reply-all-draft
Destructive

Create a reply-all draft to respond to the sender and all recipients of an email message. Choose JSON or MIME format to compose the response.

Instructions

Create a draft to reply to the sender and all recipients of a message in either JSON or MIME format. When using JSON format:

  • Specify either a comment or the body property of the message parameter. Specifying both will return an HTTP 400 Bad Request error.

  • If the original message specifies a recipient in the replyTo property, per Internet Message Format (RFC 2822), you should send the reply to the recipients in the replyTo and toRecipients properties, and not the recipients in the from and toRecipients properties.

  • You can update the draft later to add reply content to the body or change other message properties. When using MIME format:

  • Provide the applicable Internet message headers and the MIME content, all encoded in base64 format in the request body.

  • Add any attachments and S/MIME properties to the MIME content. Send the draft message in a subsequent operation. Alternatively, reply-all to a message in a single action.

šŸ’” TIP: For HTML replies pass Message.body.contentType: 'html' with Message.body.content as HTML. Note: supplying Message.body replaces the whole draft body, so the original quoted history is not included. Specifying both 'comment' and Message.body returns 400. Signatures are added by the Outlook client only, not via Graph.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bodyYes
confirmNoFor destructive operations when the confirm gate is enabled (MS365_MCP_REQUIRE_CONFIRM=true; off by default). Set to true only after the user has explicitly approved this action. When the gate is on, calls without confirm: true return { error: "confirmation_required" } without touching user data.
messageIdYesValue for the 'messageId' path segment. Pass it under the name 'messageId', not as 'id'. Use the 'id' field of the message object as returned by Microsoft Graph.
includeHeadersNoInclude response headers (including ETag) in the response metadata
excludeResponseNoExclude the full response body and only return success or failure indication

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. Changed2 schema fields changedv0.145.2
    • removedInput schema / $defs
      Removed value: -{
-  "def0": {
-    "additionalProperties": true,
-    "properties": {
-      "dateTime": {
-        "description": "A single point of time in a combined date and time representation ({date}T{time}; for example, 2017-08-29T04:00:00.0000000).",
-        "type": "string"
-      },
-      "timeZone": {
-        "description": "Represents a time zone, for example, 'Pacific Standard Time'. See below for more possible values.",
-        "type": [
-          "string",
-          "null"
-        ]
-      }
-    },
-    "type": "object"
-  },
-  "def1": {
-    "additionalProperties": true,
-    "properties": {
-      "emailAddress": {
-        "additionalProperties": true,
-        "properties": {
-          "address": {
-            "description": "The email address of the person or entity.",
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "name": {
-            "description": "The display name of the person or entity.",
-            "type": [
-              "string",
-              "null"
-            ]
-          }
-        },
-        "type": "object"
-      }
-    },
-    "type": "object"
-  }
-}
    • changedInput schema / properties / body / properties / Message / anyOf
      Previous value: -[
-  {
-    "additionalProperties": true,
-    "properties": {
-      "attachments": {
-        "description": "The fileAttachment and itemAttachment attachments for the message.",
-        "items": {
-          "additionalProperties": true,
-          "properties": {
-            "contentType": {
-              "description": "The MIME type.",
-              "type": [
-                "string",
-                "null"
-              ]
-            },
-            "id": {
-              "description": "The unique identifier for an entity. Read-only.",
-              "type": "string"
-            },
-            "isInline": {
-              "description": "true if the attachment is an inline attachment; otherwise, false.",
-              "type": "boolean"
-            },
-            "lastModifiedDateTime": {
-              "anyOf": [
-                {
-                  "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
-                  "format": "date-time",
-                  "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
-            },
-            "name": {
-              "description": "The attachment's file name.",
-              "type": [
-                "string",
-                "null"
-              ]
-            },
-            "size": {
-              "description": "The length of the attachment in bytes.",
-              "maximum": 2147483647,
-              "minimum": -2147483648,
-              "type": "number"
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "bccRecipients": {
-        "description": "The Bcc: recipients for the message.",
-        "items": {
-          "$ref": "#/$defs/def1"
-        },
-        "type": "array"
-      },
-      "body": {
-        "additionalProperties": true,
-        "properties": {
-          "content": {
-            "description": "The content of the item.",
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "contentType": {
-            "enum": [
-              "text",
-              "html"
-            ],
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "bodyPreview": {
-        "description": "The first 255 characters of the message body. It is in text format.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "categories": {
-        "description": "The categories associated with the item",
-        "items": {
-          "type": [
-            "string",
-            "null"
-          ]
-        },
-        "type": "array"
-      },
-      "ccRecipients": {
-        "description": "The Cc: recipients for the message.",
-        "items": {
-          "$ref": "#/$defs/def1"
-        },
-        "type": "array"
-      },
-      "changeKey": {
-        "description": "Identifies the version of the item. Every time the item is changed, changeKey changes as well. This allows Exchange to apply changes to the correct version of the object. Read-only.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "conversationId": {
-        "description": "The ID of the conversation the email belongs to.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "conversationIndex": {
-        "description": "Indicates the position of the message within the conversation.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "createdDateTime": {
-        "anyOf": [
-          {
-            "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
-            "format": "date-time",
-            "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
-      },
-      "flag": {
-        "additionalProperties": true,
-        "properties": {
-          "completedDateTime": {
-            "$ref": "#/$defs/def0"
-          },
-          "dueDateTime": {
-            "$ref": "#/$defs/def0"
-          },
-          "flagStatus": {
-            "enum": [
-              "notFlagged",
-              "complete",
-              "flagged"
-            ],
-            "type": "string"
-          },
-          "startDateTime": {
-            "$ref": "#/$defs/def0"
-          }
-        },
-        "type": "object"
-      },
-      "from": {
-        "$ref": "#/$defs/def1"
-      },
-      "hasAttachments": {
-        "description": "Indicates whether the message has attachments. This property doesn't include inline attachments, so if a message contains only inline attachments, this property is false. To verify the existence of inline attachments, parse the body property to look for a src attribute, such as <IMG src='cid:image001.jpg@01D26CD8.6C05F070'>.",
-        "type": [
-          "boolean",
-          "null"
-        ]
-      },
-      "id": {
-        "description": "The unique identifier for an entity. Read-only.",
-        "type": "string"
-      },
-      "importance": {
-        "enum": [
-          "low",
-          "normal",
-          "high"
-        ],
-        "type": "string"
-      },
-      "inferenceClassification": {
-        "enum": [
-          "focused",
-          "other"
-        ],
-        "type": "string"
-      },
-      "internetMessageHeaders": {
-        "description": "A collection of message headers defined by RFC5322. The set includes message headers indicating the network path taken by a message from the sender to the recipient. It can also contain custom message headers that hold app data for the message.  Requires $select to retrieve. Read-only.",
-        "items": {
-          "additionalProperties": true,
-          "properties": {
-            "name": {
-              "description": "Represents the key in a key-value pair.",
-              "type": [
-                "string",
-                "null"
-              ]
-            },
-            "value": {
-              "description": "The value in a key-value pair.",
-              "type": [
-                "string",
-                "null"
-              ]
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "internetMessageId": {
-        "description": "The message ID in the format specified by RFC2822.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "isDeliveryReceiptRequested": {
-        "description": "Indicates whether a read receipt is requested for the message.",
-        "type": [
-          "boolean",
-          "null"
-        ]
-      },
-      "isDraft": {
-        "description": "Indicates whether the message is a draft. A message is a draft if it hasn't been sent yet.",
-        "type": [
-          "boolean",
-          "null"
-        ]
-      },
-      "lastModifiedDateTime": {
-        "anyOf": [
-          {
-            "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
-            "format": "date-time",
-            "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
-      },
-      "multiValueExtendedProperties": {
-        "description": "The collection of multi-value extended properties defined for the message. Nullable.",
-        "items": {
-          "additionalProperties": true,
-          "properties": {
-            "id": {
-              "description": "The unique identifier for an entity. Read-only.",
-              "type": "string"
-            },
-            "value": {
-              "description": "A collection of property values.",
-              "items": {
-                "type": [
-                  "string",
-                  "null"
-                ]
-              },
-              "type": "array"
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "singleValueExtendedProperties": {
-        "description": "The collection of single-value extended properties defined for the message. Nullable.",
-        "items": {
-          "additionalProperties": true,
-          "properties": {
-            "id": {
-              "description": "The unique identifier for an entity. Read-only.",
-              "type": "string"
-            },
-            "value": {
-              "description": "A property value.",
-              "type": [
-                "string",
-                "null"
-              ]
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "subject": {
-        "description": "The subject of the message.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "toRecipients": {
-        "description": "The To: recipients for the message.",
-        "items": {
-          "$ref": "#/$defs/def1"
-        },
-        "type": "array"
-      }
-    },
-    "type": "object"
-  },
-  {
-    "additionalProperties": true,
-    "properties": {},
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": true,
+    "properties": {
+      "attachments": {
+        "description": "The fileAttachment and itemAttachment attachments for the message.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "contentType": {
+              "description": "The MIME type.",
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "id": {
+              "description": "The unique identifier for an entity. Read-only.",
+              "type": "string"
+            },
+            "isInline": {
+              "description": "true if the attachment is an inline attachment; otherwise, false.",
+              "type": "boolean"
+            },
+            "lastModifiedDateTime": {
+              "anyOf": [
+                {
+                  "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
+                  "format": "date-time",
+                  "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
+            },
+            "name": {
+              "description": "The attachment's file name.",
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "size": {
+              "description": "The length of the attachment in bytes.",
+              "maximum": 2147483647,
+              "minimum": -2147483648,
+              "type": "number"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "bccRecipients": {
+        "description": "The Bcc: recipients for the message.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "emailAddress": {
+              "additionalProperties": true,
+              "properties": {
+                "address": {
+                  "description": "The email address of the person or entity.",
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "name": {
+                  "description": "The display name of the person or entity.",
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                }
+              },
+              "type": "object"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "body": {
+        "additionalProperties": true,
+        "properties": {
+          "content": {
+            "description": "The content of the item.",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "contentType": {
+            "enum": [
+              "text",
+              "html"
+            ],
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "bodyPreview": {
+        "description": "The first 255 characters of the message body. It is in text format.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "categories": {
+        "description": "The categories associated with the item",
+        "items": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "type": "array"
+      },
+      "ccRecipients": {
+        "description": "The Cc: recipients for the message.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "emailAddress": {
+              "additionalProperties": true,
+              "properties": {
+                "address": {
+                  "description": "The email address of the person or entity.",
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "name": {
+                  "description": "The display name of the person or entity.",
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                }
+              },
+              "type": "object"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "changeKey": {
+        "description": "Identifies the version of the item. Every time the item is changed, changeKey changes as well. This allows Exchange to apply changes to the correct version of the object. Read-only.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "conversationId": {
+        "description": "The ID of the conversation the email belongs to.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "conversationIndex": {
+        "description": "Indicates the position of the message within the conversation.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "createdDateTime": {
+        "anyOf": [
+          {
+            "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
+            "format": "date-time",
+            "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
+      },
+      "flag": {
+        "additionalProperties": true,
+        "properties": {
+          "completedDateTime": {
+            "additionalProperties": true,
+            "properties": {
+              "dateTime": {
+                "description": "A single point of time in a combined date and time representation ({date}T{time}; for example, 2017-08-29T04:00:00.0000000).",
+                "type": "string"
+              },
+              "timeZone": {
+                "description": "Represents a time zone, for example, 'Pacific Standard Time'. See below for more possible values.",
+                "type": [
+                  "string",
+                  "null"
+                ]
+              }
+            },
+            "type": "object"
+          },
+          "dueDateTime": {
+            "additionalProperties": true,
+            "properties": {
+              "dateTime": {
+                "description": "A single point of time in a combined date and time representation ({date}T{time}; for example, 2017-08-29T04:00:00.0000000).",
+                "type": "string"
+              },
+              "timeZone": {
+                "description": "Represents a time zone, for example, 'Pacific Standard Time'. See below for more possible values.",
+                "type": [
+                  "string",
+                  "null"
+                ]
+              }
+            },
+            "type": "object"
+          },
+          "flagStatus": {
+            "enum": [
+              "notFlagged",
+              "complete",
+              "flagged"
+            ],
+            "type": "string"
+          },
+          "startDateTime": {
+            "additionalProperties": true,
+            "properties": {
+              "dateTime": {
+                "description": "A single point of time in a combined date and time representation ({date}T{time}; for example, 2017-08-29T04:00:00.0000000).",
+                "type": "string"
+              },
+              "timeZone": {
+                "description": "Represents a time zone, for example, 'Pacific Standard Time'. See below for more possible values.",
+                "type": [
+                  "string",
+                  "null"
+                ]
+              }
+            },
+            "type": "object"
+          }
+        },
+        "type": "object"
+      },
+      "from": {
+        "additionalProperties": true,
+        "properties": {
+          "emailAddress": {
+            "additionalProperties": true,
+            "properties": {
+              "address": {
+                "description": "The email address of the person or entity.",
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "name": {
+                "description": "The display name of the person or entity.",
+                "type": [
+                  "string",
+                  "null"
+                ]
+              }
+            },
+            "type": "object"
+          }
+        },
+        "type": "object"
+      },
+      "hasAttachments": {
+        "description": "Indicates whether the message has attachments. This property doesn't include inline attachments, so if a message contains only inline attachments, this property is false. To verify the existence of inline attachments, parse the body property to look for a src attribute, such as <IMG src='cid:image001.jpg@01D26CD8.6C05F070'>.",
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "id": {
+        "description": "The unique identifier for an entity. Read-only.",
+        "type": "string"
+      },
+      "importance": {
+        "enum": [
+          "low",
+          "normal",
+          "high"
+        ],
+        "type": "string"
+      },
+      "inferenceClassification": {
+        "enum": [
+          "focused",
+          "other"
+        ],
+        "type": "string"
+      },
+      "internetMessageHeaders": {
+        "description": "A collection of message headers defined by RFC5322. The set includes message headers indicating the network path taken by a message from the sender to the recipient. It can also contain custom message headers that hold app data for the message.  Requires $select to retrieve. Read-only.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "name": {
+              "description": "Represents the key in a key-value pair.",
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "value": {
+              "description": "The value in a key-value pair.",
+              "type": [
+                "string",
+                "null"
+              ]
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "internetMessageId": {
+        "description": "The message ID in the format specified by RFC2822.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "isDeliveryReceiptRequested": {
+        "description": "Indicates whether a read receipt is requested for the message.",
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "isDraft": {
+        "description": "Indicates whether the message is a draft. A message is a draft if it hasn't been sent yet.",
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "lastModifiedDateTime": {
+        "anyOf": [
+          {
+            "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
+            "format": "date-time",
+            "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
+      },
+      "multiValueExtendedProperties": {
+        "description": "The collection of multi-value extended properties defined for the message. Nullable.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "id": {
+              "description": "The unique identifier for an entity. Read-only.",
+              "type": "string"
+            },
+            "value": {
+              "description": "A collection of property values.",
+              "items": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "type": "array"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "singleValueExtendedProperties": {
+        "description": "The collection of single-value extended properties defined for the message. Nullable.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "id": {
+              "description": "The unique identifier for an entity. Read-only.",
+              "type": "string"
+            },
+            "value": {
+              "description": "A property value.",
+              "type": [
+                "string",
+                "null"
+              ]
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "subject": {
+        "description": "The subject of the message.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "toRecipients": {
+        "description": "The To: recipients for the message.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "emailAddress": {
+              "additionalProperties": true,
+              "properties": {
+                "address": {
+                  "description": "The email address of the person or entity.",
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "name": {
+                  "description": "The display name of the person or entity.",
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                }
+              },
+              "type": "object"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      }
+    },
+    "type": "object"
+  },
+  {
+    "additionalProperties": true,
+    "properties": {},
+    "type": "object"
+  }
+]
  2. Changed3 schema fields changedv0.134.4
    • addedInput schema / $defs
      Added value: +{
+  "def0": {
+    "additionalProperties": true,
+    "properties": {
+      "dateTime": {
+        "description": "A single point of time in a combined date and time representation ({date}T{time}; for example, 2017-08-29T04:00:00.0000000).",
+        "type": "string"
+      },
+      "timeZone": {
+        "description": "Represents a time zone, for example, 'Pacific Standard Time'. See below for more possible values.",
+        "type": [
+          "string",
+          "null"
+        ]
+      }
+    },
+    "type": "object"
+  },
+  "def1": {
+    "additionalProperties": true,
+    "properties": {
+      "emailAddress": {
+        "additionalProperties": true,
+        "properties": {
+          "address": {
+            "description": "The email address of the person or entity.",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "name": {
+            "description": "The display name of the person or entity.",
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "type": "object"
+      }
+    },
+    "type": "object"
+  }
+}
    • changedInput schema / properties / body / properties / Message / anyOf
      Previous value: -[
-  {
-    "additionalProperties": true,
-    "properties": {
-      "attachments": {
-        "description": "The fileAttachment and itemAttachment attachments for the message.",
-        "items": {
-          "additionalProperties": true,
-          "properties": {
-            "contentType": {
-              "description": "The MIME type.",
-              "type": [
-                "string",
-                "null"
-              ]
-            },
-            "id": {
-              "description": "The unique identifier for an entity. Read-only.",
-              "type": "string"
-            },
-            "isInline": {
-              "description": "true if the attachment is an inline attachment; otherwise, false.",
-              "type": "boolean"
-            },
-            "lastModifiedDateTime": {
-              "anyOf": [
-                {
-                  "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
-                  "format": "date-time",
-                  "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
-            },
-            "name": {
-              "description": "The attachment's file name.",
-              "type": [
-                "string",
-                "null"
-              ]
-            },
-            "size": {
-              "description": "The length of the attachment in bytes.",
-              "maximum": 2147483647,
-              "minimum": -2147483648,
-              "type": "number"
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "bccRecipients": {
-        "description": "The Bcc: recipients for the message.",
-        "items": {
-          "$ref": "#/properties/body/properties/Message/anyOf/0/properties/from"
-        },
-        "type": "array"
-      },
-      "body": {
-        "additionalProperties": true,
-        "properties": {
-          "content": {
-            "description": "The content of the item.",
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "contentType": {
-            "enum": [
-              "text",
-              "html"
-            ],
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "bodyPreview": {
-        "description": "The first 255 characters of the message body. It is in text format.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "categories": {
-        "description": "The categories associated with the item",
-        "items": {
-          "type": [
-            "string",
-            "null"
-          ]
-        },
-        "type": "array"
-      },
-      "ccRecipients": {
-        "description": "The Cc: recipients for the message.",
-        "items": {
-          "$ref": "#/properties/body/properties/Message/anyOf/0/properties/from"
-        },
-        "type": "array"
-      },
-      "changeKey": {
-        "description": "Identifies the version of the item. Every time the item is changed, changeKey changes as well. This allows Exchange to apply changes to the correct version of the object. Read-only.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "conversationId": {
-        "description": "The ID of the conversation the email belongs to.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "conversationIndex": {
-        "description": "Indicates the position of the message within the conversation.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "createdDateTime": {
-        "anyOf": [
-          {
-            "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
-            "format": "date-time",
-            "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
-      },
-      "flag": {
-        "additionalProperties": true,
-        "properties": {
-          "completedDateTime": {
-            "additionalProperties": true,
-            "properties": {
-              "dateTime": {
-                "description": "A single point of time in a combined date and time representation ({date}T{time}; for example, 2017-08-29T04:00:00.0000000).",
-                "type": "string"
-              },
-              "timeZone": {
-                "description": "Represents a time zone, for example, 'Pacific Standard Time'. See below for more possible values.",
-                "type": [
-                  "string",
-                  "null"
-                ]
-              }
-            },
-            "type": "object"
-          },
-          "dueDateTime": {
-            "$ref": "#/properties/body/properties/Message/anyOf/0/properties/flag/properties/completedDateTime"
-          },
-          "flagStatus": {
-            "enum": [
-              "notFlagged",
-              "complete",
-              "flagged"
-            ],
-            "type": "string"
-          },
-          "startDateTime": {
-            "$ref": "#/properties/body/properties/Message/anyOf/0/properties/flag/properties/completedDateTime"
-          }
-        },
-        "type": "object"
-      },
-      "from": {
-        "additionalProperties": true,
-        "properties": {
-          "emailAddress": {
-            "additionalProperties": true,
-            "properties": {
-              "address": {
-                "description": "The email address of the person or entity.",
-                "type": [
-                  "string",
-                  "null"
-                ]
-              },
-              "name": {
-                "description": "The display name of the person or entity.",
-                "type": [
-                  "string",
-                  "null"
-                ]
-              }
-            },
-            "type": "object"
-          }
-        },
-        "type": "object"
-      },
-      "hasAttachments": {
-        "description": "Indicates whether the message has attachments. This property doesn't include inline attachments, so if a message contains only inline attachments, this property is false. To verify the existence of inline attachments, parse the body property to look for a src attribute, such as <IMG src='cid:image001.jpg@01D26CD8.6C05F070'>.",
-        "type": [
-          "boolean",
-          "null"
-        ]
-      },
-      "id": {
-        "description": "The unique identifier for an entity. Read-only.",
-        "type": "string"
-      },
-      "importance": {
-        "enum": [
-          "low",
-          "normal",
-          "high"
-        ],
-        "type": "string"
-      },
-      "inferenceClassification": {
-        "enum": [
-          "focused",
-          "other"
-        ],
-        "type": "string"
-      },
-      "internetMessageHeaders": {
-        "description": "A collection of message headers defined by RFC5322. The set includes message headers indicating the network path taken by a message from the sender to the recipient. It can also contain custom message headers that hold app data for the message.  Requires $select to retrieve. Read-only.",
-        "items": {
-          "additionalProperties": true,
-          "properties": {
-            "name": {
-              "description": "Represents the key in a key-value pair.",
-              "type": [
-                "string",
-                "null"
-              ]
-            },
-            "value": {
-              "description": "The value in a key-value pair.",
-              "type": [
-                "string",
-                "null"
-              ]
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "internetMessageId": {
-        "description": "The message ID in the format specified by RFC2822.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "isDeliveryReceiptRequested": {
-        "description": "Indicates whether a read receipt is requested for the message.",
-        "type": [
-          "boolean",
-          "null"
-        ]
-      },
-      "isDraft": {
-        "description": "Indicates whether the message is a draft. A message is a draft if it hasn't been sent yet.",
-        "type": [
-          "boolean",
-          "null"
-        ]
-      },
-      "lastModifiedDateTime": {
-        "anyOf": [
-          {
-            "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
-            "format": "date-time",
-            "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
-      },
-      "multiValueExtendedProperties": {
-        "description": "The collection of multi-value extended properties defined for the message. Nullable.",
-        "items": {
-          "additionalProperties": true,
-          "properties": {
-            "id": {
-              "description": "The unique identifier for an entity. Read-only.",
-              "type": "string"
-            },
-            "value": {
-              "description": "A collection of property values.",
-              "items": {
-                "type": [
-                  "string",
-                  "null"
-                ]
-              },
-              "type": "array"
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "singleValueExtendedProperties": {
-        "description": "The collection of single-value extended properties defined for the message. Nullable.",
-        "items": {
-          "additionalProperties": true,
-          "properties": {
-            "id": {
-              "description": "The unique identifier for an entity. Read-only.",
-              "type": "string"
-            },
-            "value": {
-              "description": "A property value.",
-              "type": [
-                "string",
-                "null"
-              ]
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "subject": {
-        "description": "The subject of the message.",
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "toRecipients": {
-        "description": "The To: recipients for the message.",
-        "items": {
-          "$ref": "#/properties/body/properties/Message/anyOf/0/properties/from"
-        },
-        "type": "array"
-      }
-    },
-    "type": "object"
-  },
-  {
-    "additionalProperties": true,
-    "properties": {},
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": true,
+    "properties": {
+      "attachments": {
+        "description": "The fileAttachment and itemAttachment attachments for the message.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "contentType": {
+              "description": "The MIME type.",
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "id": {
+              "description": "The unique identifier for an entity. Read-only.",
+              "type": "string"
+            },
+            "isInline": {
+              "description": "true if the attachment is an inline attachment; otherwise, false.",
+              "type": "boolean"
+            },
+            "lastModifiedDateTime": {
+              "anyOf": [
+                {
+                  "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
+                  "format": "date-time",
+                  "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
+            },
+            "name": {
+              "description": "The attachment's file name.",
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "size": {
+              "description": "The length of the attachment in bytes.",
+              "maximum": 2147483647,
+              "minimum": -2147483648,
+              "type": "number"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "bccRecipients": {
+        "description": "The Bcc: recipients for the message.",
+        "items": {
+          "$ref": "#/$defs/def1"
+        },
+        "type": "array"
+      },
+      "body": {
+        "additionalProperties": true,
+        "properties": {
+          "content": {
+            "description": "The content of the item.",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "contentType": {
+            "enum": [
+              "text",
+              "html"
+            ],
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "bodyPreview": {
+        "description": "The first 255 characters of the message body. It is in text format.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "categories": {
+        "description": "The categories associated with the item",
+        "items": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "type": "array"
+      },
+      "ccRecipients": {
+        "description": "The Cc: recipients for the message.",
+        "items": {
+          "$ref": "#/$defs/def1"
+        },
+        "type": "array"
+      },
+      "changeKey": {
+        "description": "Identifies the version of the item. Every time the item is changed, changeKey changes as well. This allows Exchange to apply changes to the correct version of the object. Read-only.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "conversationId": {
+        "description": "The ID of the conversation the email belongs to.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "conversationIndex": {
+        "description": "Indicates the position of the message within the conversation.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "createdDateTime": {
+        "anyOf": [
+          {
+            "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
+            "format": "date-time",
+            "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
+      },
+      "flag": {
+        "additionalProperties": true,
+        "properties": {
+          "completedDateTime": {
+            "$ref": "#/$defs/def0"
+          },
+          "dueDateTime": {
+            "$ref": "#/$defs/def0"
+          },
+          "flagStatus": {
+            "enum": [
+              "notFlagged",
+              "complete",
+              "flagged"
+            ],
+            "type": "string"
+          },
+          "startDateTime": {
+            "$ref": "#/$defs/def0"
+          }
+        },
+        "type": "object"
+      },
+      "from": {
+        "$ref": "#/$defs/def1"
+      },
+      "hasAttachments": {
+        "description": "Indicates whether the message has attachments. This property doesn't include inline attachments, so if a message contains only inline attachments, this property is false. To verify the existence of inline attachments, parse the body property to look for a src attribute, such as <IMG src='cid:image001.jpg@01D26CD8.6C05F070'>.",
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "id": {
+        "description": "The unique identifier for an entity. Read-only.",
+        "type": "string"
+      },
+      "importance": {
+        "enum": [
+          "low",
+          "normal",
+          "high"
+        ],
+        "type": "string"
+      },
+      "inferenceClassification": {
+        "enum": [
+          "focused",
+          "other"
+        ],
+        "type": "string"
+      },
+      "internetMessageHeaders": {
+        "description": "A collection of message headers defined by RFC5322. The set includes message headers indicating the network path taken by a message from the sender to the recipient. It can also contain custom message headers that hold app data for the message.  Requires $select to retrieve. Read-only.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "name": {
+              "description": "Represents the key in a key-value pair.",
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "value": {
+              "description": "The value in a key-value pair.",
+              "type": [
+                "string",
+                "null"
+              ]
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "internetMessageId": {
+        "description": "The message ID in the format specified by RFC2822.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "isDeliveryReceiptRequested": {
+        "description": "Indicates whether a read receipt is requested for the message.",
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "isDraft": {
+        "description": "Indicates whether the message is a draft. A message is a draft if it hasn't been sent yet.",
+        "type": [
+          "boolean",
+          "null"
+        ]
+      },
+      "lastModifiedDateTime": {
+        "anyOf": [
+          {
+            "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z",
+            "format": "date-time",
+            "pattern": "^[0-9]{4,}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]([.][0-9]{1,12})?(Z|[+-][0-9][0-9]:[0-9][0-9])$",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "The Timestamp type represents date and time information using ISO 8601 format and is always in UTC time. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z"
+      },
+      "multiValueExtendedProperties": {
+        "description": "The collection of multi-value extended properties defined for the message. Nullable.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "id": {
+              "description": "The unique identifier for an entity. Read-only.",
+              "type": "string"
+            },
+            "value": {
+              "description": "A collection of property values.",
+              "items": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "type": "array"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "singleValueExtendedProperties": {
+        "description": "The collection of single-value extended properties defined for the message. Nullable.",
+        "items": {
+          "additionalProperties": true,
+          "properties": {
+            "id": {
+              "description": "The unique identifier for an entity. Read-only.",
+              "type": "string"
+            },
+            "value": {
+              "description": "A property value.",
+              "type": [
+                "string",
+                "null"
+              ]
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "subject": {
+        "description": "The subject of the message.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "toRecipients": {
+        "description": "The To: recipients for the message.",
+        "items": {
+          "$ref": "#/$defs/def1"
+        },
+        "type": "array"
+      }
+    },
+    "type": "object"
+  },
+  {
+    "additionalProperties": true,
+    "properties": {},
+    "type": "object"
+  }
+]
    • changedInput schema / properties / messageId / description
      Previous value: -"Path parameter: messageId"New value: +"Value for the 'messageId' path segment. Pass it under the name 'messageId', not as 'id'. Use the 'id' field of the message object as returned by Microsoft Graph."
  3. Changed1 schema field changedv0.131.2
    • changedInput schema / additionalProperties
      Previous value: -falseNew value: +true
  4. Changed1 schema field changedv0.131.1
    • addedInput schema / properties / confirm
      Added value: +{
+  "description": "For destructive operations when the confirm gate is enabled (MS365_MCP_REQUIRE_CONFIRM=true; off by default). Set to true only after the user has explicitly approved this action. When the gate is on, calls without confirm: true return { error: \"confirmation_required\" } without touching user data.",
+  "type": "boolean"
+}
  5. Addedv0.114.0
  6. Removedv0.112.2
  7. Addedv0.110.0
  8. Removedv0.108.0
  9. Addedv0.96.0

TDQS

A4.5/5.0
Behavior5/5

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

Beyond the annotations (readOnlyHint=false, destructiveHint=true), the description discloses key behaviors: the HTTP 400 error for conflicting parameters, that supplying Message.body replaces the whole draft body (dropping quoted history), that signatures are added only by the Outlook client, and that the draft can be updated later. This is extensive and goes well beyond what annotations already provide.

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

Conciseness4/5

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

The description is long but well-structured with bullet points and a tip section. It front-loads the primary purpose, then logically breaks down JSON and MIME usage, then adds important caveats. Every sentence earns its place; the length is justified by the complexity of the operation.

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?

The description thoroughly covers error conditions, format choices, and behavioral nuances. It does not mention the return value (e.g., the created draft message object), but no output schema exists, and the description provides enough for an agent to correctly invoke the tool. Minor gap: no explicit guidance on permissions, but that's not typically required for correct invocation.

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

Parameters4/5

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

With schema coverage at 80%, the description adds significant meaning to the critical 'body' parameter: it explains the Comment vs. Message.body exclusivity, the MIME format details, and the replacement behavior. It does not explain the 'confirm' parameter, but that's a standard gating parameter already described in the schema. The description compensates well for the uncovered nuances.

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

Purpose5/5

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

The description clearly states the verb (create), resource (draft reply), and scope (sender and all recipients) in the first sentence. It also mentions the two output formats (JSON or MIME), which helps distinguish it from related siblings like create-reply-draft or create-forward-draft.

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

Usage Guidelines4/5

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

The description provides strong usage context by explaining the two mutually exclusive ways to specify content (comment vs. message body), the error condition for both, and the MIME base64 requirements. It does not explicitly say 'use this instead of X', but the 'reply-all' framing and the detail on format-specific behavior make the usage context clear.

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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