Get direct links to original SEC EDGAR filings for any US public company. Returns four per-filing deep links: sec_url (the EDGAR filing-index page listing every document), viewer_url (the cgi-bin Financial-Report viewer for the specific accession), inline_viewer_url (the SEC Inline-XBRL viewer opened on the rendered primary document — the strongest provenance link, null when the filing is not Inline-XBRL), and document_url (a direct link to the rendered primary document itself — opens the actual filing, never the index page, null only when primary_document is unknown). Prefer inline_viewer_url ?? document_url ?? viewer_url ?? sec_url. Supported form_types (enum): 10-K, 10-Q, 8-K, 20-F, 40-F, 10-K/A, 10-Q/A, 20-F/A, 40-F/A. Other forms (6-K, DEF 14A, Form 4, 13F) are NOT yet exposed by this tool — use describe_schema to confirm the parquet has them, then read raw via the SDK. 8-K item codes are filterable via event_types (e.g. ['2.02'] for earnings, ['1.01'] for material agreements, ['5.02'] for officer changes). PIT-safe — filings are filtered by accepted_at, never by report_date alone. Use this instead of verify_fact_lineage when you want a list of filings; use verify_fact_lineage when you want one specific fact-to-filing trace. Available on all plans.