# Services from research.halowerk.com on Zero

> research.halowerk.com serves 14 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/research.halowerk.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/research.halowerk.com/health.json

## Services

- [Halowerk Academic Paper Search](https://www.zero.xyz/c/halowerk-academic-paper-search-9abd09ed/llms.txt): $0.005/call via x402. Searches OpenAlex and Crossref for academic publications and returns enriched metadata including DOI, authors, affiliations, abstract (reconstructed from inverted index), citation count, venue, and open-access full-text links with licence info.
- [EU Open Data Portal Dataset Discovery](https://www.zero.xyz/c/eu-open-data-portal-dataset-discovery-098eb34f/llms.txt): $0.005/call via x402. Searches the EU open data portal for datasets and returns results with licence classification (commercial reuse, attribution, share-alike), publisher, country, formats, and direct links.
- [Web Archive Snapshot Lookup (research.halowerk.com)](https://www.zero.xyz/c/web-archive-snapshot-lookup-research-halowerk-com-ece03fdc/llms.txt): $0.005/call via x402. Queries the Internet Archive for historical captures of a URL, returning capture metadata and marking snapshots where content actually changed, with support for nearest-to-date lookup.
- [Halowerk Conflict & Protest News Search](https://www.zero.xyz/c/halowerk-conflict-protest-news-search-edb71555/llms.txt): $0.006/call via x402. Searches global news for protest, conflict, and diplomatic activity in a region, returning ranked articles with source counts, languages, countries of publication, and article links—ranked by breadth of coverage rather than recency.
- [TED EU Procurement Tender Search](https://www.zero.xyz/c/ted-eu-procurement-tender-search-536fca72/llms.txt): $0.005/call via x402. Searches Tenders Electronic Daily (TED), the EU's official procurement journal, returning procurement notices with buyer, title, place of performance, estimated value, procedure type, and publication date — indexed by CPV codes with 15 pre-mapped common categories.
- [Halowerk Narrative Velocity](https://www.zero.xyz/c/halowerk-narrative-velocity-1c32c435/llms.txt): $0.006/call via x402. Computes topic coverage growth rate over a recent vs. baseline window and reports language and publishing-country spread to distinguish local events from globally spreading narratives.
- [Halowerk Source Authority Scorer](https://www.zero.xyz/c/halowerk-source-authority-scorer-687236bd/llms.txt): $0.002/call via x402. Scores a source on recency, directness, and attribution to determine whether a claim can reliably rest on it
- [HALOWERK Patent Prior Art Search](https://www.zero.xyz/c/halowerk-patent-prior-art-search-b83fd00f/llms.txt): $0.015/call via x402. Retrieves and semantically ranks recent European patent publications matching a given IPC class and concept, using EPO Linked Open Data and local embedding with nomic-embed-text.
- [HALOWERK researchwerk Supply Chain Pulse](https://www.zero.xyz/c/halowerk-researchwerk-supply-chain-pulse-829391be/llms.txt): $0.007/call via x402. Detects and scores disruption signals at named supply chain nodes by comparing recent event coverage against a baseline period across themes like strikes, weather, and border closures.
- [HALOWERK researchwerk — Controversy Pulse](https://www.zero.xyz/c/halowerk-researchwerk-controversy-pulse-df8f4755/llms.txt): $0.006/call via x402. Measures the controversy level of an organisation over a recent window compared to a baseline, optionally returning supporting news articles
- [Halowerk Grounding Score](https://www.zero.xyz/c/halowerk-grounding-score-26ad65ae/llms.txt): $0.002/call via x402. Scores how well a set of source documents supports each sentence in an answer, detecting hallucinations and unsupported claims via coverage and override checks.
- [Halowerk Location Heatmap](https://www.zero.xyz/c/halowerk-location-heatmap-15d03268/llms.txt): $0.006/call via x402. Extracts geographic places mentioned in news coverage of a topic, returning each location with article count, source count, and coordinates — distinguishing where events occurred from where they were merely referenced.
- [Halowerk Official Sources Directory](https://www.zero.xyz/c/halowerk-official-sources-directory-9b3a720c/llms.txt): $0.002/call via x402. Filters a curated directory of authoritative bodies—standards organisations, registers, intergovernmental bodies—by subject and country, returning what each authority is actually authoritative for
- [European Patent Office Linked Open Data Search](https://www.zero.xyz/c/european-patent-office-linked-open-data-search-f000e528/llms.txt): $0.005/call via x402. Searches the EPO Linked Open Data endpoint for European patent publications by keyword or applicant, returning results with explicit EP-only coverage caveats.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)