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Celoxis API v2
LiveUpdated 2 Sep 2026

Projects

Upsert a project

POST/api/v2/projects/upsertCreate or update by external key
PUT/api/v2/projects/upsertCreate or update by external key

Provide a non-empty externalKey and do not send id. Celoxis updates the matching project or creates one. Multiple matches return HTTP 409.

bash
curl -X PUT \
  -H 'Content-Type: application/json' \
  -H 'Authorization: bearer YourTokenHere' \
  -d '{
    "externalKey": "ERP-P-1001",
    "name": "Website Redesign",
    "workspace": 12345
  }' \
  'https://app.celoxis.com/psa/api/v2/projects/upsert'