For AI agents: a documentation index is available at /llms.txt. A markdown version of this page is available at /guide/api/endpoints/checklist/work-items-checklist-groups-create-custom.md.
Create a custom group on a work item
Gated on allowcustomgroups (403 when disabled).
/api/v1/partner/work-items/checklist/groups/create-customGated on allow_custom_groups (403 when disabled). Payload: {work_item_type*, work_item_id*, name*}.
#Authorizations
X-API-KEYstringrequiredDeveloper API key (starts with pk_)
Example: pk_1234567890abcdef1234567890abcdef1234567890abcdef1234567890
X-TIMESTAMPintegerrequiredUnix timestamp in seconds (must be within ±5 minutes of server time)
Example: 1704806400
X-NONCEstringrequiredOne-time random string (minimum 8 characters, prevents replay attacks)
Example: b7f91c2e5a8d3f1e
X-SIGNATUREstringrequiredHMAC-SHA256 signature of canonical string (hex-encoded)
Example: a1b2c3d4e5f67890abcdef1234567890abcdef1234567890abcdef1234567890
#Headers
AcceptstringrequiredContent type of response
Example: application/json
Content-TypestringrequiredContent type of request
Example: application/json
#Request body
encrypted_datastringrequired