{"database": "open_comments", "table": "_metadata", "rows": [["updated_at", "2026-04-17 06:30:30"]], "columns": ["key", "value"], "primary_keys": ["key"], "primary_key_values": ["updated_at"], "units": {}, "query_ms": 0.33195014111697674, "source": "Federal Register API & Regulations.gov API", "source_url": "https://www.federalregister.gov/developers/api/v1", "license": "Public Domain (U.S. Government data)", "license_url": "https://www.regulations.gov/faq"}