Projects API: Update milestone due date

Endpoint#

Property	Value
Type	mutation
Method	POST
Path	/api/external/v1/projects/update_milestone_due_date
Handler	OperatelyWeb.Api.Projects.Milestones.UpdateDueDate

Authentication#

• Requires a valid API token.
• Requires a write-enabled token.
• Read-only tokens return 403.

Inputs#

Field	Type	Required	Nullable	Default
milestone_id	id primitive (encoded as string)	Yes	No	-
due_date	contextual_date object	Yes	Yes	-

Outputs#

Field	Type	Required	Nullable
milestone	milestone object	Yes	No

cURL Example#

Copied

curl --request POST \
  --url "https://app.operately.com/api/external/v1/projects/update_milestone_due_date" \
  --header "Authorization: Bearer ${OPERATELY_API_TOKEN}" \
  --header "Content-Type: application/json" \
  --data '{"due_date":{"__typename":"value", "date":"2026-01-01", "date_type":"day", "value":"value"}, "milestone_id":"value"}'

Response Example#

{
  "milestone": {
    "__typename": "value",
    "available_statuses": [
      "<task_status>"
    ],
    "comments": [
      "<milestone_comment>"
    ],
    "comments_count": 123,
    "completed_at": "2026-01-01",
    "creator": "<person>",
    "description": "value",
    "id": "value",
    "inserted_at": "2026-01-01",
    "permissions": "<project_permissions>",
    "project": "<project>",
    "space": "<space>",
    "status": "pending",
    "subscription_list": "<subscription_list>",
    "tasks_kanban_state": "value",
    "tasks_ordering_state": [
      "value"
    ],
    "timeframe": "<timeframe>",
    "title": "value",
    "url": "value"
  }
}