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MailchimpSchemaBehavioral

Required fields removed in PATCH /lists/{list_id}/interest-categories/{interest_category_id} request body: [title type]

Affected surface
PATCH /lists/{list_id}/interest-categories/{interest_category_id}

What changed

Required fields removed in PATCH /lists/{list_id}/interest-categories/{interest_category_id} request body: [title type] Affected surface: PATCH /lists/{list_id}/interest-categories/{interest_category_id}. Root cause: endpoint `PATCH /lists/{list_id}/interest-categories/{interest_category_id}`. Detected at Thu, 20 Aug 2026 19:16:06 UTC UTC.

Diff

{
  "path": "PATCH /lists/{list_id}/interest-categories/{interest_category_id}",
  "removed_fields": [
    "title",
    "type"
  ],
  "schema_path": "PATCH /lists/{list_id}/interest-categories/{interest_category_id} request body"
}

Likely impact

The contract still holds, but observable behavior shifted — defaults, response timing, or rate-limit shaping. Existing code keeps compiling and most calls keep working, but edge cases may differ. Worth a sanity check.

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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