HALOWERK researchwerk

Endpoints (14 live)

• POST /v1/dataset-discovery — Searches the official EU open data portal and returns datasets with what decides whether they are usable: the licence, classified by whether commercial reuse is allowed and what attribution or share-alike it demands. A dataset under a non-commercial licence is marked as unusable for a paid product rather than listd as if equivalent. Each result also carries its publisher, country, last modification date, the distribution formats available and how many there are, and direct links. (0.005 USDC on Base)
• POST /v1/controversy-pulse — Tracks how much is written about an organisation and in what tone, comparing a recent window against the same term own longer baseline, and returns both the volume ratio and the tone shift with the articles behind them. The framing is fixed and repeated in the response: this is an attention signal and not a judgement. A tone drop means more negative language is being used, not that something happened, and a product recall, a lawsuit and a critical opinion piece produce the same deflection. (0.006 USDC on Base)
• POST /v1/supply-chain-pulse — For each node you name — a port, a plant, a corridor, a supplier — the service counts reporting on five disruption themes over a recent window and compares it against the same term own longer baseline. Self-referential comparison is the design: Rotterdam and a regional port have entirely different normal reporting levels, so a fixed threshold is blind for one and a permanent alarm for the other, and only the ratio against a term own history means anything. (0.007 USDC on Base)
• POST /v1/patent-prior-art — Collects up to 15 recent EP publication candidates from a caller-supplied IPC class through the official EPO Linked Open Data endpoint, embeds concept and title/abstract text locally with nomic-embed-text, and returns the closest matches. The IPC scope prevents a misleading full-corpus keyword scan that times out at the source. Coverage is European publications only and candidate retrieval is not exhaustive. (0.015 USDC on Base)
• POST /v1/grounding-score — Splits the answer into sentences and measures, for each one, how much of it is covered by the supplied sources. Coverage is asymmetric on purpose: the question is what share of the statement appears in the source, so a long source can fully cover a short claim, and it combines single-word overlap with word-pair overlap because the same words in a different order can mean something else. Two checks override coverage and this is the point of the endpoint. (0.002 USDC on Base)
• POST /v1/official-sources — Answers the two questions that open any serious piece of research. First, where does something stand officially: filter a curated directory of authorities, registers, standards bodies and intergovernmental organisations by subject and country and get, for each one, what it is actually authoritative for, which is the real answer rather than a bare list of links. (0.002 USDC on Base)
• POST /v1/patent-search — Queries the European Patent Office Linked Open Data endpoint, which is the only patent source still reachable without a key: PatentsView has been retired, and both EPO OPS and the USPTO Open Data Portal answer 403 without credentials. Coverage is therefore EP publications and this is stated in every response, because an empty result here proves only that no European publication exists, not that no patent does. (0.005 USDC on Base)
• POST /v1/narrative-velocity — Computes the growth of coverage for a topic between a recent window and a baseline, and reports the spread across languages and publishing countries alongside it. The spread is the more informative half: a topic exploding in one language is a national event, one rising simultaneously across eight languages is something else entirely, and a growth rate alone cannot tell them apart. (0.006 USDC on Base)
• POST /v1/conflict-events — Searches global news coverage for protest, conflict and diplomatic activity in a region and returns the reporting with source counts, languages, countries of publication and the article links. Ranking is by breadth of coverage rather than by recency, because a story three outlets carry and one three hundred carry look identical in a raw feed, and the number of independent sources is the only signal available here for whether something is significant or merely recent. (0.006 USDC on Base)
• POST /v1/location-heatmap — Returns the geographic places named in coverage of a topic, each with the number of articles mentioning it, the number of distinct sources, and coordinates where the source supplies them. The distinction the service is built on is between mention and occurrence: an article about a decision taken in Brussels affecting mining in Chile names both places, and reading the resulting map as an event map puts the decision in Chile and the mining in Brussels. (0.006 USDC on Base)
• POST /v1/web-archive — Queries the Internet Archive for the captured versions of a URL and returns them with capture time, HTTP status, MIME type and content digest, oldest and newest first. Because consecutive captures share a digest when nothing changed, the versions where the content actually differed are marked — that is the list worth reading, not the raw capture log. A target date returns the nearest snapshot with the gap in days, which is what a citation of a page as it stood on a given day needs. (0.005 USDC on Base)
• POST /v1/paper-search — Searches OpenAlex and Crossref for publications and returns each with its DOI, authors and their affiliations, publication year, venue, abstract, citation count and, where one exists, a direct link to a legally free full text with the licence it is offered under. OpenAlex stores abstracts as an inverted word index rather than text; it is reconstructed here, because the raw structure is unusable. Results can be filtered by year and restricted to open access. (0.005 USDC on Base)
• POST /v1/tender-search — Searches Tenders Electronic Daily, the EU procurement journal, and returns notices with buyer, title, place of performance, estimated value, procedure type and publication date, each linked to the full notice. Search runs on CPV codes because that is how TED is indexed — free text finds a fraction of what a category search does — and fifteen common categories are mapped to their codes so a caller need not know them. (0.005 USDC on Base)
• POST /v1/source-authority — Scores a source along the dimensions that decide whether a claim can rest on it. Recency: how old the material is against how fast the field moves, because a five-year-old figure is fine in history and worthless in pricing. Directness: whether it reports its own research, official record or announcement, or relays someone else — every relay step loses detail and adds interpretation. Attribution: whether a named, identifiable author stands behind it. (0.002 USDC on Base)