{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "https://designsystemdocspec.org/v0.15.2/common/extensions.schema.json", "title": "Extensions", "description": "Vendor-specific extensions. An open object for tool metadata outside the core schema. Keys MUST use vendor namespaces.", "$defs": { "extensions": { "type": "object", "description": "All vendor-specific extensions . Keys MUST use a namespace of at least two dot-separated segments (reverse domain recommended), Example: 'com.figma', 'acme.tooling'; the pattern is case-tolerant. Tools that don't recognize an extension MUST keep it. Extension data SHOULD NOT duplicate core schema fields.", "propertyNames": { "pattern": "^[A-Za-z0-9_-]+(\\.[A-Za-z0-9_-]+)+$" }, "additionalProperties": true } } } { "com.figma": { "componentId": "abc123def456", "variableCollectionId": "VariableCollectionId:1234:5678" }, "com.storybook": { "storyId": "components-button--primary" }, "com.internal": { "teamOwner": "design-systems", "jiraProject": "DS", "lastAuditDate": "2024-11-15" } }