Full dossier for ONE known product: its current snapshot plus its observed history. USE WHEN the user has a specific ASIN, Walmart item ID, product link, or a product_id returned by shopping or search, and asks about price history, historical prices, price changes, 30-day history, stock history, seller history, buy-box history, historical analysis, 'analyse this product', 'is this a good buy', 'has the price moved/dropped', 'who is selling this', 'is it in stock'. This is the ONLY tool that returns history: shopping and search return current values, so any historical question about a product they listed comes here. DON'T USE to discover products from a keyword (use shopping) or to pull a filtered list (use search). RETURNS current price, BSR, rating, review count, stock, buy-box seller and seller count, plus an observed_at freshness stamp, full price_history and stock_history back to first observation (keyed; the free lane carries the 30-day views), change events tagged with the buy-box seller at each change, the current all-seller offer table with 30-day buy-box days (each seller row carries fulfillment AMZ/FBA/FBM and delivery days), a fulfillment block (buy-box AMZ/FBA/FBM, offer counts, whether Amazon sells and holds the buy box, buy-box delivery days and dispatch latency), the bought-past-month badge (measured aggregate buyer behavior, not an estimate), brand stats, and since 2026-09-27: dimensions (item weight + package size as printed plus parsed metric weight_g / *_cm), deal_history (list price, savings and coupon/promotion text as segments of consecutive observations, with a current view), bought_past_month_history (the badge over time; null = page seen without a badge), rating_history (rating_count + rating per observed day with ratings_gained_30d/90d), and variation_coverage (the variation matrix as last seen with, per child, whether we track it and its latest 30-day price - current state, not history). With offer_history=true every per-seller point also carries that day's shipping cost, fba and prime, and the answer carries buybox_price_history (2026-10-09): the lowest buy-box price of every observed day, oldest first, each point labelled source offers (our offer observations, every Amazon marketplace, from 2026-04-17) or daily_snapshot (the legacy daily snapshot, Amazon US back to Nov 2023) - the deepest price series we hold; a gap between two dates is a stretch we did not observe. Since 2026-10-14 every Amazon answer also carries buybox_price_points_hot: every all-offers-page observation of the last 30 days, newest last, {ts, price, seller, seller_id, fulfillment, offer_count} - sub-daily for ASINs in our hot lane, which refreshes popular and customer-polled ASINs every few hours (null when none; history_only carries it too) - and tracking: the lane's state for the ASIN (hot, interval_min, last_fetched_at) or null. Since 2026-10-15 Amazon answers carry buybox_condition (new | used | null = no featured offer; with buybox_condition_source product_page | offers_page and buybox_condition_detail: the pinned offer's condition text, used_only_buybox, or the used storefront's name - Amazon Resale / Amazon Warehouse win the buy box like any seller and read as Amazon retail before), buybox_state (what the lane's newest all-offers read saw: in_stock | no_buybox | out_of_stock, with buybox_state_observed_at and stock_state_source when it decided stock_state; stock_state, in_stock and out_of_stock always agree), and on LIVE answers variation_status (page_is_sibling | page_is_other | null) + page_asin when Amazon served another ASIN's page for the one asked (cache answers: null). Amazon answers also carry the observed product-page content, the byline (authors[] with role_norm author/narrator/illustrator/editor/translator + author for books, audiobooks, music; 2026-09-29), the book/media format (format, format_norm, and formats[]: every format of the book, each its own ASIN with price and membership subscription_price, plus family_asin; 2026-09-30) block: description (with description_source), feature_bullets, images, breadcrumbs, variations with variation_count and parent_asin, stamped content_observed_at — content_observed_at:null with empty arrays means the content crawl has not captured this ASIN yet, never 'this product has no description/gallery'. For the ~17% of the catalog with no overall rank (media, books, niche items), bsr_leaf and bsr_leaf_category carry the best category rank instead. Every response carries a data_source field naming the marketplace the numbers were observed on (e.g. 'amazon US marketplace — observed listings') — attribute prices to that source when presenting them; they are marketplace listings, not manufacturer or site-wide prices. MARKETPLACES us, uk, de, ca, au, fr, it, es, jp, mx, br, walmart. Walmart takes a numeric item ID (or gtin= with the item's UPC) and returns the intelligence blocks plus its listing content: image_url, description, breadcrumbs, highlights (spec name/value pairs), warnings, upc, rating/review_count, was_price, in_stock, and shipping_cost per seller (no live scrape on Walmart). COST free lane 1 of 30 daily queries, cache only, and returns the snapshot + 30-day views (the full history streams, bsr_history, offer_history and live scrapes need an API key (plans from $19/mo) — the response's locked block lists exactly what a key unlocks). Keyed: 0.5 credits from cache with everything included - bsr_history and offer_history too, no extra charge since 2026-10-10 - and 1 for a live scrape; history_only=true returns just the history series for 0.05 credit. Misses and partial scrapes are never billed; a miss may return a hint (found on another marketplace, or retry with mode=live). SELLER FEEDBACK (2026-09-18): every response carries seller_ratings - one entry per seller the answer names (current offers, cheapest new/used, buy-box holder and, with offer_history, every historical seller) with seller_positive_pct, seller_feedback_count, seller_rating and observed_at from a nightly seller-feedback table; offer_history.sellers[] rows carry the same fields directly. Amazon's own offers have no feedback. Not billed.