generated: '2026-08-04' method: searched status: published source: https://sylvia-api.com/openapi.json description: API key authentication, read from the provider-published specification. verified: '2026-08-04' schemes: - id: ApiKeyAuth type: apiKey in: header name: X-API-Key evidence: - url: https://sylvia-api.com/openapi.json status: 200 note: distinct document — differs from the site-wide HTML catch-all