Brickfact

Compare the freshest known delivered offer with the recorded retail low and show coverage. No all-time-low claims or predictions. History excludes Amazon; current offers can include Amazon.

assess_deal

Only for explicit collector, resale or sealed-set market-valuation requests. For price history, price development, Preisentwicklung or past shop prices, call get_retail_price_history first. Never use this tool as a fallback for partial or unavailable retailer history. Values are EUR collector valuations, not retailer prices or predictions.

get_price_history

Find monitored retailer offers for one set in a supported market. Compare item prices and reported shipping totals. Unknown shipping is not free shipping. Results do not guarantee stock or checkout prices.

get_set_offers

Compare specifications, retirement status and monitored offers for two to four distinct set numbers in the same retailer market.

compare_sets

Get the existing app link and steps for setting a price alert or saving a set to a Brickfact watchlist. This read-only handoff does not create anything. A target_price is an optional draft in the market currency; the user completes the action in the app.

get_app_handoff

Find sets by name or number, theme IDs, budget, pieces, age recommendation or retirement status. Use price_basis delivered for budgets including shipping; item preserves the original item-only search. Delivered search excludes unknown shipping before pagination. Returns links to Brickfact comparison pages.

search_sets

Find catalogue theme IDs and names, optionally by text. Theme IDs can be used to narrow a set search.

list_themes

Find curated related sets, optionally cheaper by delivered price or with fewer pieces, and optionally within a delivered-price budget. Candidate coverage is bounded; fewer pieces does not establish physical dimensions.

find_alternatives

Look up a set's specifications, retirement information and monitored offers. Future retirement dates are estimates. Reported shipping totals and unverified stock are explicitly labelled.

get_set_details

First choice for price history, price trends, Preisentwicklung and past merchant prices. Read recorded delivered retailer prices in the selected market and currency. Use days 365 for the last 12 months. Partial coverage is valid history: show available observations and actual dates instead of saying no history. Amazon and unknown shipping are excluded. Do not substitute collector market valuations.

get_retail_price_history