All messages under a project are children of a Message Board resource.
Endpoints:
GET /message_boards/2.jsonwill return the message board with an ID of2.
To get the message board ID for a project, see the Get a project endpoint's dock payload. To retrieve its messages, see the Get messages endpoint.
{
"id": 1069479392,
"status": "active",
"visible_to_clients": false,
"created_at": "2026-02-12T00:09:34.613-06:00",
"updated_at": "2026-02-26T10:41:51.038-06:00",
"title": "Message Board",
"inherits_status": true,
"type": "Message::Board",
"url": "https://3.basecampapi.com/195539477/buckets/2085958504/message_boards/1069479392.json",
"app_url": "https://3.basecamp.com/195539477/buckets/2085958504/message_boards/1069479392",
"bookmark_url": "https://3.basecampapi.com/195539477/my/bookmarks/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVEkiLmdpZDovL2JjMy9SZWNvcmRpbmcvMTA2OTQ3OTM5Mj9leHBpcmVzX2luBjsAVEkiCHB1cgY7AFRJIg1yZWFkYWJsZQY7AFQ=--5b36411ed69f8efd9f978730efb236662fbb4bf0.json",
"position": 1,
"bucket": {
"id": 2085958504,
"name": "The Leto Laptop",
"type": "Project"
},
"creator": {
"id": 1049715913,
"attachable_sgid": "BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVEkiK2dpZDovL2JjMy9QZXJzb24vMTA0OTcxNTkxMz9leHBpcmVzX2luBjsAVEkiCHB1cgY7AFRJIg9hdHRhY2hhYmxlBjsAVA==--e627c45e6b34e08862da23906862412620e4d5d9",
"name": "Victor Cooper",
"email_address": "victor@honchodesign.com",
"personable_type": "User",
"title": "Chief Strategist",
"bio": "Don’t let your dreams be dreams",
"location": "Chicago, IL",
"created_at": "2026-02-12T00:08:49.342-06:00",
"updated_at": "2026-02-12T00:08:50.871-06:00",
"admin": true,
"owner": true,
"client": false,
"employee": true,
"time_zone": "America/Chicago",
"avatar_url": "https://3.basecampapi.com/195539477/people/BAhpBMlkkT4=--5fe7b70fbee7a7f0e2e1e19df7579e5d880c753d/avatar",
"company": {
"id": 1033447817,
"name": "Honcho Design"
},
"can_ping": true,
"can_manage_projects": true,
"can_manage_people": true,
"can_access_timesheet": true,
"can_access_hill_charts": true
},
"messages_count": 9,
"messages_url": "https://3.basecampapi.com/195539477/buckets/2085958504/message_boards/1069479392/messages.json",
"app_messages_url": "https://3.basecamp.com/195539477/buckets/2085958504/message_boards/1069479392/messages"
}curl -s -H "Authorization: Bearer $ACCESS_TOKEN" https://3.basecampapi.com/$ACCOUNT_ID/message_boards/2.jsonThe following project-scoped routes are still supported and will remain available, but flat routes above are the canonical form for new integrations.
GET /buckets/1/message_boards/2.json→ Get message board