{"query":"crosscorpus","matched":1,"count":1,"catalog_size":133,"note":"Ranked by where the terms matched (id and tags beat prose). Call example_url as-is; free products need no payment, paid ones return 402 with the price.","products":[{"id":"impact_rule_companies","endpoint":"/v1/impact/rule","price_usd":0.05,"description":"Map a Federal Register rule to the public companies whose SEC filings cite its docket, RIN or CFR part — cross-corpus full-text join, ranked by citation strength with filing counts and dates. One call replaces holding and joining both corpora.","when_to_use":"You hold a Federal Register document number and need the likely-affected issuer list.","tags":["regulation","impact","sec","crosscorpus"],"example_url":"https://answerpool.io/v1/impact/rule?document_number=2026-12341","sample_url":"https://answerpool.io/v1/samples/impact_rule_companies"}]}