OpenShopGraph

Search merchants/shops by free-text query (name or domain fragment), optionally filtered by country (ISO 3166-1 alpha-2, e.g. "DE") and/or by an exact category slug. Returns the public shop view only; shops still under internal review are not returned. `results` carries at most `limit` entries (default 50, max 100); `total_count` is the full match count before that cap and `truncated` is true when more results exist beyond the page (`offset`, default 0, selects the page). Multi-word queries are matched conjunctively: every word must be evidenced on a shop (name, domain or category). `ignored_terms` lists the words that matched nothing anywhere in the corpus and were therefore dropped to avoid an empty answer; a non-empty `ignored_terms` means the results answer a narrower question than the one asked. `match_quality` states how well the query was evidenced: "full" (every word found as a name/domain/category fragment; this is evidence of a fragment, not of relevance, and results are not ranked), "partial" (some words are in `ignored_terms`; the results answer a narrower question), "none" (no match). For "partial" and "none", `suggestions` carries hints instead of a guess: `categories` (known category slugs; German words like "schuhe" are mapped) and `shops` (domains within typo distance, e.g. "bergzeitt" -> bergzeit.de); both are empty for "full". `category_truncated` is true when category resolution hit its internal cap and the match set is a subset. `category` accepts only a slug from the shop category taxonomy; an unrecognized slug is rejected with an error and does not yield a silent empty `results`. `category` is additive to `query` (AND, not OR); `query: ""` browses a category without a name/domain filter.

What a shop STATES about its own shipping: which destinations it names, the delivery time it claims, and any free-shipping threshold, plus the date that statement was last checked and where it was read (policy_page or structured_data). This is a shop-level statement, NOT an offer and NOT a quote: it carries no carrier and no shipping price, because OpenShopGraph does not hold that data. The optional country (ISO 3166-1 alpha-2, e.g. "DE") adds a ships_to verdict derived from the stated destination list; "unknown" is a real answer there and means the statement does not settle it. When nothing has been collected for a shop, the reply says so explicitly (collected:false): a gap in the data, not a statement that the shop does not ship. The checked-at date marks how current the merchant's claim is.

Fetch a single merchant/shop by id or domain (public view). Answers "shop not found" for shops still under internal review, identical to a genuinely unknown domain, so reviewers cannot be distinguished from typos. The offers array is present for schema stability and is empty for shops without ingested merchant offers. `fields_belegt` ("n/m") counts how many of the shop's policy facts carry a checked, sourced value, out of the m policy facts tracked per shop.

What a shop STATES about its own policies, each fact with the date it was last checked and where it was read: return window in days (returns_days), free return label, tracking offered, payment methods, buyer-protection seal, plus the shipping statement (destinations, stated delivery time, free-shipping threshold). Answers questions such as "how long can I return something at this shop?". These are shop-level statements, NOT offers and NOT quotes: no carrier, no shipping price. Every fact in `policies` is an object with `collected`: when true it carries value, checked_at and source (policy_page = read from the shop, llm_gap_resolution = model-derived, not read from the shop); when false it carries a reason and means OpenShopGraph holds no checked value, a gap in the data and NOT a statement that the shop has no such policy. A fact whose value and check date are stored but whose source is unknown is also reported as collected:false (reason no_source): a value without a source is not shown. The optional country (ISO 3166-1 alpha-2, e.g. "DE") adds a ships_to verdict derived from the stated destination list; "unknown" is a real answer there. `checked_at` is the date a figure was last checked and marks how current a stated claim is.

Enumerate the shop category taxonomy: every category slug currently carried by at least one public shop, together with how many public shops carry it. The taxonomy is flat (no parent/child hierarchy, e.g. "fashion" and "womens-clothing" are siblings, not nested) and its slugs come from observed data, not from a fixed enum, so the set of slugs is known only from this response. The `category` filter of the shop search accepts only slugs from this response. A shop can carry more than one category, so the counts can add up to more than the number of shops.

List currently USABLE discount codes/coupons, optionally filtered by shop_domain (e.g. "otto.de"). A code is withheld from `results` when it is EXPIRED (valid_until has passed), when a real checkout test PROVED it does not work (verification_status "verified_rejected"), or when a display policy suppresses it on this channel/country. Nothing is withheld silently: `total_count` is the REAL number of codes the query found before any of that (for the collection list the full count over everything, not just the window), `examined` is how many codes this request looked at, and `withheld` breaks the difference down by reason ({expired, verified_rejected, reserved_test_domain, policy}); examined minus results.length equals the sum of `withheld`, and `note` states the same balance in one sentence. WITHOUT shop_domain the answer is one window of at most `limit` codes (default 100, max 100) starting at `offset` (default 0), ordered by a stable id: `truncated` is true when more codes lie beyond it and `next_offset` is the offset of the next page (null on the last page), so `truncated: false` marks the last page. limit/offset are rejected together with shop_domain, which already returns every code of that shop. An empty `results` is explained by `total_count` and `note`, which tell "this shop has no codes at all" apart from "it has codes and every one of them is proven dead". An UNKNOWN or internal-review shop_domain is a different answer again: it is an error ("shop not found"), not an empty list; and a backend failure is reported as a failure, not as an empty list. Each result carries validUntil: an ISO timestamp when the code has a stated expiry, or null when it is open-ended; null means unlimited, NOT unknown-and-expired, and a stated expiry can pass after the response was produced. Each result ALSO carries verificationStatus, the verdict of a real checkout test against this exact code: "verified_applied" means the code worked in an actual checkout attempt (the response car…