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BasecampSchemaAdditive

Response schema changed for PUT /{accountId}/projects/{projectId} (Project)

Affected surface
PUT /{accountId}/projects/{projectId}
Affected field
Project

What changed

Response schema changed for PUT /{accountId}/projects/{projectId} (Project) Affected surface: PUT /{accountId}/projects/{projectId}. Root cause: schema `Project`. Detected at Tue, 14 Jul 2026 01:50:25 UTC UTC.

Diff

{
  "added_fields": [
    "end_date",
    "start_date"
  ],
  "path": "PUT /{accountId}/projects/{projectId}",
  "schema_path": "schema Project"
}

Likely impact

This is an additive change. Existing integrations are unaffected; this is mostly useful if you want to take advantage of the new surface.

Diff your serializers against the new schema. The diff above shows what moved.

Catch changes like this on every API you depend on.

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