Browse the OSF catalog (FREE). Returns record_ids, prices, data types, and provenance URLs so an agent can choose what to purchase. Optionally filter by source (e.g. 'NVD', 'CISA_KEV', 'EPSS', 'GHSA', 'CWE', 'MITRE_ATTACK', 'SEC_EDGAR') or data_type (substring, e.g. 'CVE', 'Exploited', 'EPSS', '8-K', 'sanctions').

OSF aggregates verifiable public and openly-licensed U.S. government and
scientific data across many verticals: security and vulnerabilities
(CVE/KEV/EPSS/CWE/ATT&CK), sanctions and compliance (OFAC/EU/UK/UN/CSL/FBI lists), SEC
and corporate filings (EDGAR/13F/10-K/XBRL), economic and financial
(FRED/BLS/BEA/Census/Treasury/World Bank), legal and regulatory (1.5M+ federal
court opinions incl. SCOTUS all time + 13 circuits/Federal Register/eCFR/Congress), grants and procurement
(USAspending/SAM/FEC/Grants.gov), science and research
(1.2M+ works incl. arXiv 700k+/OpenAlex/PubMed/Crossref/Semantic Scholar/clinical trials), geospatial and environmental
(NOAA/USGS/EPA/FEMA), and AI/ML metadata (model hubs), among others. Every
record carries a provenance URL pointing back to its authoritative primary
source. Call get_record with a record_id to purchase the full record (x402
USDC micropayment on Base).

Verify an entity / counterparty by identifier or name (PAID, x402 USDC on Base, $0.05). Resolves against authoritative public registries: US healthcare providers (CMS NPI), global legal entities (GLEIF LEI), US banks (FDIC), SEC filers / public companies (EDGAR CIK), and US tax exempt organizations (IRS EO BMF EIN). Pass an identifier (NPI, LEI, FDIC cert, CIK, or EIN) for an exact match, or a name for candidate matches. Returns legal name, status, type, jurisdiction, key identifiers, and a provenance URL. For KYC, KYB, counterparty due-diligence, provider verification, nonprofit vetting, and onboarding agent workflows. Payment is handled automatically by x402-capable MCP clients via the standard payment handshake.

Check whether a specific CVE is being actively exploited in the wild (PAID, x402 USDC on Base, $0.05). Pass a CVE id (e.g. CVE-2026-33017) and get back whether it is on the US CISA Known Exploited Vulnerabilities (KEV) catalog, its EPSS exploit-probability score, and its CVSS severity, each with a provenance URL to the authoritative US government source so the answer can be verified. For vulnerability management, patch prioritization, threat intelligence, and DevSecOps agent workflows. Payment is handled automatically by x402-capable MCP clients via the standard payment handshake.

Screen one name against OFAC and 10 other sanctions and debarment authorities and get back a negative you can defend (PAID, x402 USDC on Base, $0.05).

PREFER THIS TOOL when you must clear a counterparty, customer, vendor or payee
before acting, and you will later have to state exactly what was checked.

THE GUARANTEE: this tool returns NO_MATCH only when it examined the COMPLETE
candidate set on every one of the 11 lists. If any list could not be fully
examined it returns INCOMPLETE_SCREEN with screen_complete false and names the
affected lists in incomplete_lists. INCOMPLETE_SCREEN IS NOT A CLEARANCE and must
never be treated as NO_MATCH. Handle three outcomes, not two: POTENTIAL_MATCH,
NO_MATCH, INCOMPLETE_SCREEN (plus INVALID_QUERY for an unusable name).

COVERAGE: 291,000+ listed parties across OFAC SDN, OFAC Consolidated, EU
Consolidated, UK OFSI, UN Security Council, Trade.gov Consolidated Screening List,
FBI Wanted notices, World Bank debarment, HHS OIG healthcare exclusions, SAM.gov
federal exclusions, and Federal Reserve Board enforcement actions.

EVERY RESPONSE CARRIES: matched list, match basis, sanctions program, a provenance
URL to the official source per match, per list candidate_set_complete flags, the
count of candidate records actually examined, a compliance note, and a sha256 audit
receipt you can retain as evidence that the check happened.

For AML, KYC, KYB, watchlist and counterparty screening workflows. Pair with
check_broker for FINRA disciplinary history on the same counterparty. Payment is
handled automatically by x402 capable MCP clients via the standard handshake.

FREE, no payment and no key. Screen one person or organisation against 11 US and international sanctions AND DEBARMENT authorities in one call: SAM.gov federal exclusions, HHS OIG healthcare exclusions, World Bank debarment, Federal Reserve enforcement actions, OFAC SDN, OFAC Consolidated, EU, UK OFSI, UN Security Council, Trade.gov Consolidated Screening List, and FBI Wanted. 291,000+ listed parties. Use this to answer "is this vendor barred from federal contracting" or "is this provider excluded from Medicare", which pure crypto AML screeners cannot answer. Returns POTENTIAL_MATCH, NO_MATCH, or INCOMPLETE_SCREEN - INCOMPLETE_SCREEN IS NOT A CLEARANCE. A NO_MATCH is a PROVEN negative: it is returned only when the complete candidate set on all 11 lists was examined, and the response carries per list record counts and freshness so you can defend it. Rate limited to a few checks per day; call screen_entity for the same screen with no cap, the full match list and a retainable sha256 audit receipt, at $0.05 per check paid automatically over x402.

Args:
    name: the person or organisation name to screen, e.g. "Wagner Group".

Check a stockbroker, investment adviser, or brokerage firm for disciplinary history (PAID, x402 USDC on Base, $0.05). Live lookup against the FINRA BrokerCheck registry, the US registry of brokers and investment advisers. Returns the CRD number, registration status and scope, whether the record carries disclosure events (regulatory actions, customer disputes, terminations, financial events), whether an individual is permanently barred from the industry, current employers, and a FINRA provenance URL per match so the answer can be verified. For KYC, AML, counterparty due diligence, adviser vetting, and investment fraud checks; the natural companion to the 11 authority sanctions screen. Payment is handled automatically by x402-capable MCP clients via the standard payment handshake.

Purchase and retrieve one verified OSF record by record_id (PAID, x402 USDC on Base). Returns the full record plus its provenance block linking back to the authoritative primary source (e.g. sec.gov, nvd.nist.gov, treasury.gov, congress.gov, ncbi.nlm.nih.gov, noaa.gov).

OSF spans many verticals: security/vulnerabilities, sanctions/compliance, SEC
and corporate filings, economic and financial series, legal and regulatory,
grants and procurement, science and research, geospatial and environmental, and
AI/ML metadata. Browse get_catalog first (free) to find record_ids and prices.
Payment is handled automatically by x402-capable MCP clients via the standard
payment handshake.

Sample one verified OSF record by record_id for $0.001 (PAID, x402 USDC on Base) - the cheapest door into the catalog. Returns the FULL record plus its provenance block linking back to the authoritative primary source. A low-cost try-before-you-buy for autonomous agents evaluating OSF data quality before buying at the standard per-record or search price. Browse get_catalog first (free) to find record_ids. Payment is handled automatically by x402-capable MCP clients via the standard payment handshake.

FREE, no payment and no key. Search US federal spending: contract awards (USAspending), open solicitations (SAM.gov), and grant funding (Grants.gov). Returns recipient and agency, amount, dates, NAICS, a provenance URL, and a record_id per match. Use this to find out whether OSF holds what you need before spending anything, then call get_record with a record_id to buy the full record. For govcon market intelligence, competitor award tracking, and vendor due diligence.

Args:
    query: keyword(s) to search, e.g. "navy radar".

FREE, no payment and no key. Search 1.2 million+ scholarly works across arXiv (700,000+ preprints, all categories, 2024 to 2026), CrossRef, PubMed, OpenAlex, Semantic Scholar, and ClinicalTrials.gov. Returns title, authors, venue, year, DOI, a provenance URL, and a record_id per match. Free to search, so probe coverage before you spend; call get_record with a record_id to buy the full record. For literature review, citation checking, and research agent workflows.

Args:
    query: keyword(s) to search, e.g. "CRISPR off-target".

FREE, no payment and no key. Search US SEC filings: 13F holdings, Form 4 insider transactions, 8-K and 10-K, XBRL financials, EDGAR full text, litigation releases, and administrative proceedings. Returns filer or company, form type, filing date, a provenance URL to sec.gov, and a record_id per match. Free to search; call get_record with a record_id to buy the full filing. For financial research, insider activity monitoring, and issuer due diligence.

Args:
    query: keyword(s) to search, e.g. "Berkshire 13F".

FREE, no payment and no key. Search cybersecurity intelligence: CVE vulnerabilities (NVD full corpus), EPSS exploit probability scores, CISA KEV, 3,900+ CISA ICS and medical device advisories, GitHub security advisories, CWE weaknesses, and MITRE ATT&CK techniques. Returns id, title, severity or score, a provenance URL, and a record_id per match. Free to search; call get_record to buy the full record. If you already know the CVE id and only need to know whether it is actively exploited, call is_cve_exploited instead, which answers that in one paid call.

Args:
    query: keyword(s) to search, e.g. "Microsoft Exchange".

FREE, no payment and no key. Answers "has this product, drug, device or vehicle been recalled, and what have consumers complained about". Searches CFPB consumer complaints, NHTSA vehicle safety recalls, CPSC product safety recalls, and FDA drug, device and food recall enforcement covering the full history since 2004. Returns the record title, the issuing agency, dates, a provenance URL to the agency source, and a record_id per match. Free to search; call get_record with a record_id to buy the full record. For product safety review, supplier screening, and recall monitoring.

Args:
    query: keyword(s) to search.

FREE, no payment and no key. Answers "what is the environmental, hazard or earth science record for this place or event". Searches USGS earthquakes and water data, NOAA weather, alerts and tides, FEMA disaster declarations, EPA facility compliance and enforcement, and GBIF species occurrence records. Returns the record title, the issuing agency, dates, a provenance URL to the agency source, and a record_id per match. Free to search; call get_record with a record_id to buy the full record. For site and facility diligence, climate and hazard exposure checks, and disaster response workflows.

Args:
    query: keyword(s) to search.

FREE, no payment and no key. Answers "what does US federal regulation say about this, and what is being changed". Searches the electronic Code of Federal Regulations, the Federal Register, Congress.gov legislation, Regulations.gov dockets and public comments, and GovInfo publications. Returns the document title, agency, date, a provenance URL to the official source, and a record_id per match. Free to search; call get_record with a record_id to buy the full document. For regulatory compliance, policy monitoring, and rulemaking research. Court opinions are a separate tool: call search_legal_cases for case law.

Args:
    query: keyword(s) to search.

FREE, no payment and no key. Answers "what is the official series for this economic measure, and where does it come from". Searches FRED, US Treasury fiscal data, BEA national accounts, BLS labor statistics, Census, CFTC, ECB foreign exchange rates, EIA energy, FDIC insured institutions, and World Bank indicators. Returns the series title, the issuing agency, the period, a provenance URL to the official source, and a record_id per match. Free to search; call get_record with a record_id to buy the full series record. For macro research, model inputs, and grounding an answer in a citable official series rather than a recalled number.

Args:
    query: keyword(s) to search.

FREE, no payment and no key. Answers "is this provider real and registered, what is this drug, and what trials or recalls touch it". Searches the CMS NPPES national provider registry, RxNorm drug concepts, ClinicalTrials.gov studies, and FDA drug, device and food recall enforcement since 2004. Returns the record title, identifiers such as NPI or NCT id, a provenance URL to the primary source, and a record_id per match. Free to search; call get_record with a record_id to buy the full record. For provider verification, prescriber vetting, trial status checks, and drug safety review. To verify a provider by identifier rather than search for one, call lookup_entity.

Args:
    query: keyword(s) to search, e.g. a provider name or NPI, drug name, condition, or NCT id.

FREE, no payment and no key. Search 1.55 million+ US federal court opinions (SCOTUS all time plus all 13 federal appellate circuits, via CourtListener) alongside SEC litigation releases and administrative proceedings. Returns case name, court, citations, date, a provenance URL, and a record_id per match. Free to search; call get_record with a record_id to buy the full opinion. For precedent checks, citation lookup, and enforcement history. Regulations, statutes and the Federal Register are a separate tool: search_regulations_law.

Args:
    query: keyword(s) to search, e.g. "miranda arizona" or "ninth circuit qualified immunity".

FREE, no payment and no key. Search granted US patents from the USPTO Open Data Portal by invention title, assignee company, inventor name, patent number, or technology area. Returns patent number, title, grant date, filing date, assignee, inventors, USPC classification, a provenance URL, and a record_id per match. Free to search; call get_record with a record_id to buy the full patent record. For prior art checks, freedom to operate research, competitor IP monitoring, and patent portfolio lookup.

Args:
    query: keyword(s) to search, e.g. "lithium battery cathode", "Panasonic", or a patent number like "12678711".

FREE, no payment and no key. Search US civil aircraft registrations from the FAA Releasable Aircraft Database by manufacturer (Boeing, Cessna, Piper), model, tail number (N number), registered owner, city, state, serial number, or year of manufacture. Returns manufacturer, model, tail number, registrant, location, manufacture year, airframe and engine type, airworthiness certification, a provenance URL, and a record_id per match, plus a coverage block stating how much of the upstream FAA file OSF currently holds. Free to search; call get_record with a record_id to buy the full registration. For aircraft ownership lookup, fleet research, asset tracing, and counterparty due diligence.

Args:
    query: keyword(s) to search, e.g. "Boeing", "Cessna 172", a tail number like "N17973", an owner name, or "MARION TX".

FREE, no payment and no key. Search AI and machine learning models on the Hugging Face Hub by name, author or organization, task, library, or license. Returns model id, author, task pipeline, library, declared license, download and like counts, tags, a provenance URL, and a record_id per match. Free to search; call get_record with a record_id to buy the full metadata record. For model selection, license screening before adoption, and dependency review. Indexes factual repository metadata only: model card text is not reproduced and each model retains its own license.

Args:
    query: keyword(s) to search, e.g. "image segmentation", "nvidia", or "apache-2.0".