# Services from api.osf-master-server.com on Zero

> api.osf-master-server.com serves 40 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/api.osf-master-server.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.osf-master-server.com/health.json

## Services

- [OSF CVE Lookup & Exploit Check](https://www.zero.xyz/c/osf-cve-lookup-exploit-check-948c1968/llms.txt): $0.05/call via x402. Looks up a CVE by ID and returns its CVSS severity, EPSS exploitation probability, and whether it appears on the CISA Known Exploited Vulnerabilities (KEV) catalog
- [OSF Security — CVE Exploit Check](https://www.zero.xyz/c/osf-security-cve-exploit-check-0adf5561/llms.txt): $0.05/call via x402. Looks up a CVE identifier and returns its CISA KEV exploitation status, EPSS probability score, and NVD CVSS severity with provenance-stamped audit receipt
- [OSF Sanctions Screening by Name](https://www.zero.xyz/c/osf-sanctions-screening-by-name-25bf5557/llms.txt): $0.05/call via x402. Screens a person or entity name against OFAC SDN, EU Consolidated, and UK OFSI sanctions lists, returning match results with provenance and an audit receipt
- [OSF Broker/Investment Adviser Check](https://www.zero.xyz/c/osf-broker-investment-adviser-check-4d94502f/llms.txt): $0.05/call via x402. Searches FINRA BrokerCheck by name to retrieve registration status, CRD number, disclosure flags, and permanent bar status for brokers and investment advisers
- [OSF Identity Entity Lookup](https://www.zero.xyz/c/osf-identity-entity-lookup-ae7e3095/llms.txt): $0.05/call via x402. Looks up a legal entity or individual across public registries (GLEIF LEI, US CMS NPI, FDIC, SEC EDGAR) and returns verified identity matches with provenance links and audit receipts.
- [Open Source Filings – US Federal Court Case Search](https://www.zero.xyz/c/open-source-filings-us-federal-court-case-search-40100be8/llms.txt): $0.05/call via x402. Search 1.55 million+ US federal court opinions and SEC enforcement actions by case name, party, court, or citation, returning structured case metadata and provenance URLs.
- [FINRA BrokerCheck Disciplinary Registry Lookup](https://www.zero.xyz/c/finra-brokercheck-disciplinary-registry-lookup-51b990ee/llms.txt): $0.05/call via x402. Performs a live disciplinary check of a stockbroker, investment adviser, or brokerage firm against the FINRA BrokerCheck registry, returning CRD number, registration status, disclosures, and employer history.
- [OSF US Regulations & Law Search](https://www.zero.xyz/c/osf-us-regulations-law-search-02d86dbb/llms.txt): $0.05/call via x402. Search US regulations and law by keyword across eCFR, Federal Register, Regulations.gov, CourtListener, GovInfo, and congressional legislation
- [Open Source Filings — FAA Aircraft Registration Search](https://www.zero.xyz/c/open-source-filings-faa-aircraft-registration-search-4a7736c8/llms.txt): $0.05/call via x402. Search the FAA Releasable Aircraft Database by tail number, owner, location, serial number, or manufacture year to retrieve provenance-stamped US civil aircraft registration records.
- [OSF Entity & Counterparty Verification (NPI / LEI / FDIC / EDGAR)](https://www.zero.xyz/c/osf-entity-counterparty-verification-npi-lei-fdic-edgar-40b2497d/llms.txt): $0.05/call via x402. Resolves a US healthcare provider, global legal entity, US insured bank, or SEC filer by identifier or name, returning legal name, status, jurisdiction, and a provenance URL to the official source.
- [OSF Economic Indicators Search](https://www.zero.xyz/c/osf-economic-indicators-search-319a7d3c/llms.txt): $0.05/call via x402. Search macroeconomic and financial indicators by keyword across FRED, World Bank, US Treasury, BEA, BLS, CFTC, ECB, and EIA data sources
- [OSF Environmental Data Search](https://www.zero.xyz/c/osf-environmental-data-search-533c6df8/llms.txt): $0.05/call via x402. Searches US environmental datasets by keyword across USGS, NOAA, GBIF, FEMA, and EPA, returning location, measurements, dates, and provenance URLs per match.
- [OSF Cybersecurity Intelligence Search](https://www.zero.xyz/c/osf-cybersecurity-intelligence-search-c660a90a/llms.txt): $0.05/call via x402. Search across CVE vulnerabilities, EPSS scores, CISA Known Exploited Vulnerabilities, GitHub advisories, CWE weaknesses, and MITRE ATT&CK techniques by keyword, vendor, or product
- [OSF Consumer Protection Search](https://www.zero.xyz/c/osf-consumer-protection-search-8fd7dffd/llms.txt): $0.05/call via x402. Search across US consumer protection datasets (CFPB complaints, NHTSA vehicle recalls, CPSC product safety recalls, FDA enforcement) by keyword, returning matched records with provenance URLs.
- [OSF Scientific Literature Search](https://www.zero.xyz/c/osf-scientific-literature-search-12f8355a/llms.txt): $0.05/call via x402. Search scientific and scholarly literature by keyword across CrossRef, PubMed, arXiv, and OpenAlex in a single API call, returning titles, authors, venues, publication years, DOIs, and provenance URLs.
- [OSF Federal Spending Search — Contracts, Solicitations & Grants](https://www.zero.xyz/c/osf-federal-spending-search-contracts-solicitations-grants-02b141b3/llms.txt): $0.05/call via x402. Search US federal spending data across USAspending contract awards, SAM.gov open solicitations, and Grants.gov opportunities in one unified keyword query.
- [OSF SEC Filings Search](https://www.zero.xyz/c/osf-sec-filings-search-6b177969/llms.txt): $0.05/call via x402. Search US SEC filings by keyword across 13F institutional holdings, Form 4 insider transactions, 8-K/10-K/10-Q reports, XBRL financials, and litigation proceedings, returning matched filing metadata with provenance URLs.
- [Open Source Filings – USPTO Patent Search](https://www.zero.xyz/c/open-source-filings-uspto-patent-search-528fc701/llms.txt): $0.05/call via x402. Search granted US patents from the USPTO Open Data Portal by keyword, assignee, inventor, or patent number, returning structured patent metadata with provenance URLs.
- [OSF Healthcare Records Search](https://www.zero.xyz/c/osf-healthcare-records-search-17b62423/llms.txt): $0.05/call via x402. Search US healthcare public data by keyword across CMS NPPES NPI provider records, NLM RxNorm drug concepts, ClinicalTrials.gov studies, and FDA recall enforcement (openFDA)
- [OSF Security Record #1585424 — CISA Known Exploited Vulnerability Lookup](https://www.zero.xyz/c/osf-security-record-1585424-cisa-known-exploited-vulnerability-lookup-d40e7930/llms.txt): $0.04/call via x402. Fetches a single provenance-stamped public security record (CISA Known Exploited Vulnerability) by ID from the OSF verifiable data marketplace, returning the full record with a canonical provenance URL.
- [OSF Open Source Filings — Legal Case Search](https://www.zero.xyz/c/osf-open-source-filings-legal-case-search-ea38d984/llms.txt): $0.05/call via x402. Search US public court case records by case name, party, topic, citation, or court, returning verified provenance-stamped legal case matches from CourtListener and other government sources.
- [OSF Open Source Filings — Environment Data Search](https://www.zero.xyz/c/osf-open-source-filings-environment-data-search-2fe6b8b2/llms.txt): $0.05/call via x402. Search provenance-stamped public environmental and scientific government data (USGS streamflow, wildfire declarations, etc.) by keyword, returning verified record matches with source attribution
- [OSF Patent Search — USPTO Patent Lookup via x402 Micropayment](https://www.zero.xyz/c/osf-patent-search-uspto-patent-lookup-via-x402-micropayment-edb4e4c4/llms.txt): $0.05/call via x402. Searches USPTO patent records by keyword, assignee, inventor, or patent number and returns matching patent metadata with provenance stamps
- [OSF Cyber Threats Search — CVE & CISA KEV Lookup](https://www.zero.xyz/c/osf-cyber-threats-search-cve-cisa-kev-lookup-23cd79b2/llms.txt): $0.05/call via x402. Search live cybersecurity threat intelligence (CVEs, CISA KEV, vulnerability data) by keyword, vendor, product, or CVE ID, returning matched records with severity scores
- [OSF Research Papers Search](https://www.zero.xyz/c/osf-research-papers-search-99879cbd/llms.txt): $0.05/call via x402. Search academic and scientific research papers by keyword, topic, author, title, or DOI, returning provenance-stamped bibliographic records
- [OSF Healthcare Records Search](https://www.zero.xyz/c/osf-healthcare-records-search-4b867e32/llms.txt): $0.05/call via x402. Search provenance-stamped US healthcare and clinical data — including ClinicalTrials.gov studies, provider NPI records, and drug information — returning verified public-domain records with source attribution.
- [OSF Open Source Filings — AI/ML Model Search](https://www.zero.xyz/c/osf-open-source-filings-ai-ml-model-search-ad4328c3/llms.txt): $0.05/call via x402. Search Hugging Face Hub AI/ML models by name, author, organization, task, library, or license and return provenance-stamped matching records
- [OSF Open Source Filings — Law & Regulation Search](https://www.zero.xyz/c/osf-open-source-filings-law-regulation-search-03876460/llms.txt): $0.05/call via x402. Search US federal and state laws and regulations by keyword, returning provenance-stamped matching records from authoritative government sources
- [OSF Open Source Filings — Purchase Verified Record by ID](https://www.zero.xyz/c/osf-open-source-filings-purchase-verified-record-by-id-ff31af55/llms.txt): $0.05/call via x402. Fetches a single provenance-stamped public-domain government or scientific record by numeric ID, paying $0.05 USDC per record via x402 micropayment on Base
- [OSF Open Source Filings — Consumer Protection Search](https://www.zero.xyz/c/osf-open-source-filings-consumer-protection-search-ed6f2d91/llms.txt): $0.05/call via x402. Search US consumer protection data by keyword across CFPB financial complaints, NHTSA vehicle recalls, and related government datasets, returning matched records with provenance metadata
- [OSF Aircraft Registry Search](https://www.zero.xyz/c/osf-aircraft-registry-search-5d69aee7/llms.txt): $0.05/call via x402. Search the FAA aircraft registry by tail number, manufacturer, model, owner, or location and return matching aircraft records with provenance stamps
- [OSF Open Source Filings — SEC Filings Search](https://www.zero.xyz/c/osf-open-source-filings-sec-filings-search-80496b58/llms.txt): $0.05/call via x402. Search SEC filings by company name, ticker, CIK, fund manager, or keyword and receive provenance-stamped matching records via x402 micropayment
- [OSF Government Spending Search](https://www.zero.xyz/c/osf-government-spending-search-92d3cd15/llms.txt): $0.05/call via x402. Search US federal government spending records by keyword and return provenance-stamped matching awards with agency, amount, and source data
- [OSF Sanctions & Compliance Screening](https://www.zero.xyz/c/osf-sanctions-compliance-screening-3115af60/llms.txt): $0.05/call via x402. Screens a named entity or person against OFAC SDN, EU consolidated, and UK OFSI sanctions lists, returning a hit/no-hit result with matched list, provenance URL, and audit receipt.
- [Open Source Filings — Sample Single Record by ID](https://www.zero.xyz/c/open-source-filings-sample-single-record-by-id-65ef88a7/llms.txt): $0.001/call via x402. Fetches a single verifiable public-data record from the OSF catalog by record_id for $0.001, returning the full JSON payload plus a provenance URL to the authoritative primary source.
- [OSF Economic Indicators Search](https://www.zero.xyz/c/osf-economic-indicators-search-956df2ea/llms.txt): $0.05/call via x402. Search provenance-stamped economic indicator datasets (e.g. unemployment rate, GDP growth) from sources like FRED, returning matched series metadata via x402 micropayment.
- [Open Source Filings – Hugging Face Model Search](https://www.zero.xyz/c/open-source-filings-hugging-face-model-search-a16f9f18/llms.txt): $0.05/call via x402. Search AI and machine learning models on the Hugging Face Hub by keyword, returning model metadata including author, task, library, license, downloads, and likes.
- [OSF Security Record Lookup (CVE/KEV/EPSS/GHSA/CWE/ATT&CK)](https://www.zero.xyz/c/osf-security-record-lookup-cve-kev-epss-ghsa-cwe-att-ck-178ce001/llms.txt): $0.04/call via x402. Fetches a single verified security/vulnerability data record by ID, covering NVD CVE, CISA KEV, EPSS exploitation scores, GitHub Security Advisories, CWE weakness classes, or MITRE ATT&CK techniques, with full JSON and a provenance URL.
- [OSF Annual Record Purchase — $0.30 Tier](https://www.zero.xyz/c/osf-annual-record-purchase-0-30-tier-6d75c59e/llms.txt): $0.3/call via x402. Purchases and returns one verified OSF public-domain data record (at the $0.30 tier) with a provenance URL linking back to its authoritative U.S. government or scientific primary source.
- [OSF Public Record Purchase](https://www.zero.xyz/c/osf-public-record-purchase-205c79df/llms.txt): $0.05/call via x402. Purchases and retrieves a single verified OSF public record with a provenance URL linking back to the authoritative U.S. government or scientific primary source.

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)