Endpoints:
GET /buckets/1/client/correspondences.jsonwill return a paginated list of client correspondences in the project with an ID of1.
Optional query parameters:
sort- Options:created_atorupdated_at. Default:created_at.direction- Options:descorasc. Default:desc.
[
{
"id": 1069479702,
"status": "active",
"visible_to_clients": false,
"created_at": "2026-02-07T15:52:00.000Z",
"updated_at": "2026-02-12T06:09:55.894Z",
"title": "Final deliverables and launch are right around the corner",
"inherits_status": true,
"type": "Client::Correspondence",
"url": "https://3.basecampapi.com/195539477/buckets/2085958505/client/correspondences/1069479702.json",
"app_url": "https://3.basecamp.com/195539477/buckets/2085958505/client/correspondences/1069479702",
"bookmark_url": "https://3.basecampapi.com/195539477/my/bookmarks/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVEkiLmdpZDovL2JjMy9SZWNvcmRpbmcvMTA2OTQ3OTcwMj9leHBpcmVzX2luBjsAVEkiCHB1cgY7AFRJIg1yZWFkYWJsZQY7AFQ=--549ac000e6e0eac9d8df54b89a1c0a473ab78e57.json",
"subscription_url": "https://3.basecampapi.com/195539477/buckets/2085958505/recordings/1069479702/subscription.json",
"parent": {
"id": 1069479620,
"title": "The Clientside",
"type": "Client::Board",
"url": "https://3.basecampapi.com/195539477/buckets/2085958505/client/board.json",
"app_url": "https://3.basecamp.com/195539477/buckets/2085958505/client/board.1069479620"
},
"bucket": {
"id": 2085958505,
"name": "The Leto Locator",
"type": "Project"
},
"creator": {
"id": 1049715938,
"attachable_sgid": "BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVEkiK2dpZDovL2JjMy9QZXJzb24vMTA0OTcxNTkzOD9leHBpcmVzX2luBjsAVEkiCHB1cgY7AFRJIg9hdHRhY2hhYmxlBjsAVA==--4ccc567a0a3b10e354bca909b704637b601f0b16",
"name": "Annie Bryan",
"email_address": "annie@honchodesign.com",
"personable_type": "User",
"title": "Central Markets Manager",
"bio": "To open a store is easy, to keep it open is an art",
"location": null,
"created_at": "2026-02-12T06:08:57.340Z",
"updated_at": "2026-02-12T06:08:57.340Z",
"admin": false,
"owner": false,
"client": false,
"employee": true,
"time_zone": "America/Chicago",
"avatar_url": "https://3.basecampapi.com/195539477/people/BAhpBOJkkT4=--732a71fbd28ec10d9bf4466abd3588a8bea40bdb/avatar?v=1",
"company": {
"id": 1033447817,
"name": "Honcho Design"
},
"can_ping": true,
"can_manage_projects": true,
"can_manage_people": true,
"can_access_timesheet": false,
"can_access_hill_charts": true
},
"content": "",
"subject": "Final deliverables and launch are right around the corner",
"replies_count": 5,
"replies_url": "https://3.basecampapi.com/195539477/buckets/2085958505/client/recordings/1069479702/replies.json"
}
]curl -s -H "Authorization: Bearer $ACCESS_TOKEN" https://3.basecampapi.com/$ACCOUNT_ID/buckets/1/client/correspondences.jsonGET /client/correspondences/2.jsonwill return the client correspondence with an ID of2.
{
"id": 1069479622,
"status": "active",
"visible_to_clients": false,
"created_at": "2025-12-30T16:17:00.000Z",
"updated_at": "2026-02-12T06:09:50.717Z",
"title": "Project kickoff!",
"inherits_status": true,
"type": "Client::Correspondence",
"url": "https://3.basecampapi.com/195539477/buckets/2085958505/client/correspondences/1069479622.json",
"app_url": "https://3.basecamp.com/195539477/buckets/2085958505/client/correspondences/1069479622",
"bookmark_url": "https://3.basecampapi.com/195539477/my/bookmarks/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVEkiLmdpZDovL2JjMy9SZWNvcmRpbmcvMTA2OTQ3OTYyMj9leHBpcmVzX2luBjsAVEkiCHB1cgY7AFRJIg1yZWFkYWJsZQY7AFQ=--05a942db8b0024e8a6f293a19b83d795cf079601.json",
"subscription_url": "https://3.basecampapi.com/195539477/buckets/2085958505/recordings/1069479622/subscription.json",
"parent": {
"id": 1069479620,
"title": "The Clientside",
"type": "Client::Board",
"url": "https://3.basecampapi.com/195539477/buckets/2085958505/client/board.json",
"app_url": "https://3.basecamp.com/195539477/buckets/2085958505/client/board.1069479620"
},
"bucket": {
"id": 2085958505,
"name": "The Leto Locator",
"type": "Project"
},
"creator": {
"id": 1049715922,
"attachable_sgid": "BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVEkiK2dpZDovL2JjMy9QZXJzb24vMTA0OTcxNTkyMj9leHBpcmVzX2luBjsAVEkiCHB1cgY7AFRJIg9hdHRhY2hhYmxlBjsAVA==--ed42dd1af36c4756554ffb2a20de4e019f0c28d3",
"name": "Jay Edmonds",
"email_address": "jay@honchodesign.com",
"personable_type": "User",
"title": "Internal Marketing Assistant",
"bio": null,
"location": null,
"created_at": "2026-02-12T06:08:53.455Z",
"updated_at": "2026-02-12T06:08:53.455Z",
"admin": false,
"owner": false,
"client": false,
"employee": false,
"time_zone": "America/Chicago",
"avatar_url": "https://3.basecampapi.com/195539477/people/BAhpBNJkkT4=--6ef93d58440c2ed1fec4457e3eb5f09572e866a4/avatar?v=1",
"can_ping": true,
"can_manage_projects": true,
"can_manage_people": true,
"can_access_timesheet": false,
"can_access_hill_charts": true
},
"content": "",
"subject": "Project kickoff!",
"replies_count": 6,
"replies_url": "https://3.basecampapi.com/195539477/buckets/2085958505/client/recordings/1069479622/replies.json"
}curl -s -H "Authorization: Bearer $ACCESS_TOKEN" https://3.basecampapi.com/$ACCOUNT_ID/client/correspondences/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/client/correspondences/2.json→ Get a client correspondence