max-optional-properties

Category: Structural — overall schema structure triggers this rule

Error Codes

Profile	Code
anthropic.so.2026-04-30	ANT-S-max-optional-properties

Description

Optional properties must not exceed 24

Rationale

anthropic.so.2026-04-30 limits optional parameters across strict schemas.

Bad Example

{ "type": "object", "properties": { "optional": { "type": "string" } } }

Good Example

{ "type": "object", "properties": { "required": { "type": "string" } }, "required": ["required"], "additionalProperties": false }