Use when the user asks which insiders bought a stock, whether a ticker has insider buying, or for Form 4 buys in a date range. Pass ticker, start+end for an inclusive ISO range, or neither for today's buys (SEC code P); days narrows, include_unlisted adds non-listed issuers. Each row carries filing_url, offering_context (true = IPO/offering, not open-market) and source_excerpt: the parsed filing fields, quoted from the filing as data, never derived. Caveat: only purchases that pass the signal filter are returned; code P is not proof of a buy.

Use when the user asks about cluster buying, multiple insiders buying the same company, or the strongest insider-buying signal. Returns only clusters (>=2 insiders buying one issuer in-window), newest first; days/ticker narrow. Each row carries its source filing_url, offering_context, and uniform_price_cluster (true = >=3 insiders bought at the IDENTICAL price same day — an offering/conversion, not independent conviction). Caveat: genuine clusters rank above uniform-price ones; only purchases that pass the signal filter are returned; code P alone is not proof of an open-market buy.

Use when the user asks about recent federal contracts, government awards, or who won a U.S. federal contract. Returns newly signed federal awards, newest first; min_amount sets a USD floor, days a last-N-days window. Every award carries its source award_url. Caveat: awards without a source link are dropped and never returned.

Use when the user asks about activist investors, hedge-fund stakes, or recent 13D filings on a company. Returns activist Schedule 13D/13D-A filings on US-listed companies, newest first then by stated-intent strength; ticker, min_percent and days narrow. Each row carries its source filing_url and item4_excerpt (the activist's own Item 4 intent sentence, quoted from the filing as data, capped at its current length of 600 chars). Caveat: passive 13G is not covered; filings without a source link are dropped.

Use when the user asks what a fund bought or sold, how a 13F filer changed its holdings, or which institutions opened/added/trimmed/exited a position. Returns quarter-over-quarter deltas, newest first; filer, change_type, min_value_usd, days narrow. Each row carries as_of_quarter_end, filed_date, lag_days, value_usd (whole dollars), cusip, issuer_name and its source filing_url; ticker is null (never guessed). Caveat: the delta is the product, not a trading edge — see the instructions and each response's coverage note for the universe and CIK scope.

Use when the user wants to verify or fact-check a claim that an insider bought a stock, or to pull the purchases in one filing by accession. Pass the claim (ticker/issuer, person, amount, timeframe), or pass accession alone to fetch that filing's gated purchase records. Returns confirmed (with source filing + link), not_found, partial (itemised claimed-vs-filed), out_of_scope (sales/options/grants), or out_of_coverage. Caveat: filing-verified — absence is reported as absence, never estimated or guessed.

Use when the user wants to verify or fact-check a claim about an activist stake or 13D filing (ticker/subject, filer, percent-of-class, stated intent, timeframe). Returns confirmed (with source filing + link), not_found, partial (itemised claimed-vs-filed), out_of_scope (passive 13G isn't covered), or out_of_coverage. Every response states the coverage window checked. Caveat: filing-verified — absence is reported as absence, never guessed.

Use when the user wants to verify or fact-check that a company filed an 8-K carrying specific SEC item code(s) in a timeframe. Pass registrant (cik/company/accession), item code(s) and dates. Returns confirmed (with source filing + link), not_found, partial (itemised claimed-vs-filed), out_of_scope (claims about the filing's meaning aren't covered — it is never paraphrased), or out_of_coverage. Caveat: filing-verified — item codes are the SEC controlled vocabulary parsed from the filing, never inferred.

Use when the user wants to verify or fact-check whether a fund (filer name/CIK) reported a CHANGE in a position in an issuer (issuer_name or cusip) in a quarter. Returns held (reported a change — opened/added/trimmed, with source filing + link), not_held (reported the position exited), not_found (no reported change — does NOT mean the fund didn't hold it), or out_of_coverage. Caveat: filing-verified; CANNOT confirm an unchanged holding (13F deltas only) — a 'held, unchanged' position produces no row.