Open Source Filings (OSF)

Live data marketplace selling US public record and scientific data to AI agents. 8.1 million+ records across 80 sources: cyber vulnerabilities, sanctions screening, federal court opinions, SEC filings, scholarly research, healthcare, FDA recalls, government spending, lobbying disclosures, tax exempt organizations, economic indicators, regulations, environment, consumer safety, US patents, FAA aircraft registrations, and AI model metadata. Every record carries a provenance URL to its authoritative primary source plus a cryptographic signature. Purchases settle instantly in USDC on Base via the x402 payment protocol. Sanctions and debarment screening has a free door: 5 screens a day with no signup, no API key and no card, at /x402/free/screen/sanctions/{name}. Also reachable over MCP with 21 tools, 15 of them free including a free catalog and a free screen. On sanctions screening a negative is provable: NO_MATCH is returned only when the complete candidate set on all 11 authority lists was examined, otherwise INCOMPLETE_SCREEN, which is not a clearance. Every priced endpoint can be tried for free on the SAME URL by adding ?trial=1: one real call per endpoint per hour, no wallet and no signup, returning the real payload rather than a sample.

Skills

• Sanctions and KYC screen
  Screen a person or entity name against eleven authorities: OFAC SDN, OFAC Consolidated, EU, UK OFSI, UN Security Council, US Trade CSL, FBI Wanted, World Bank debarment, HHS OIG exclusions, SAM exclusions, Federal Reserve enforcement actions. 291,000+ parties with aliases. Returns NO_MATCH only when the complete candidate set on every list was examined; otherwise INCOMPLETE_SCREEN with screen_complete false, which is not a clearance. Per list candidate_set_complete flags, a provenance URL per match, and a sha256 audit receipt. $0.05 per screen. FREE TIER: the identical screen runs 5 times per UTC day at https://api.osf-master-server.com/x402/free/screen/sanctions/{name} with no signup, no API key and no payment, and over MCP as the tool screen_entity_free. Try it before you pay.
  sanctionskyccompliancescreeningfree tierfree trialno api keydebarmentsam.govexclusions
• Free sanctions and debarment screen, 5 per day, no signup
  The free door on the screening flagship. Identical corpus, identical code path and identical verdict as the paid screen: 11 authorities and 291,000+ listed parties in one call, including the federal DEBARMENT and EXCLUSION registries a pure sanctions API cannot answer (SAM.gov federal exclusions, HHS OIG healthcare exclusions, World Bank debarment, Federal Reserve enforcement). No payment, no account, no API key, no card. 5 screens per UTC day per client; the 6th returns HTTP 429 with charged false and the paid URL, and never charges you. A free NO_MATCH carries the same screening_evidence and the same provable negative guarantee as a paid one. GET https://api.osf-master-server.com/x402/free/screen/sanctions/{name} , or the MCP tool screen_entity_free. Paid equivalent with no cap, the complete match list and a retainable sha256 audit receipt: $0.05 at https://api.osf-master-server.com/x402/screen/sanctions/{name} .
  freefree tierno api keyno signupsanctionsdebarmentexclusionssam.govofacscreeningkybcompliance
• CVE exploit check
  Check any CVE id against NVD, the CVE Program, ENISA EUVD, and CISA KEV known exploited list, with CVSS scores. $0.05 per check.
  cvevulnerabilitysecuritykev
• Cyber threat search
  Keyword search across 700,000+ vulnerability and advisory records: full NVD corpus since 1988, CVE Program JSON 5, ENISA EUVD, CISA KEV, 3,900+ CISA ICS advisories, full CWE catalog, ATT&CK. $0.05 per search.
  cybersecurityvulnerabilitiesadvisories
• US case law search
  The dedicated US case law product: 1.55 million+ federal court opinions covering SCOTUS all time and all 13 federal appellate circuits, each verifiable against CourtListener and the court record, plus SEC litigation releases and SEC administrative proceedings. For case law research, precedent checks, citation lookup, and enforcement history. $0.05 per search.
  case lawcourt opinionsSCOTUSappellate circuitslegal researchprecedentcitationsSEC enforcement
• Federal regulations and rulemaking search
  Search US federal regulations and rulemaking: the electronic Code of Federal Regulations, the Federal Register, congressional legislation from Congress.gov, Regulations.gov dockets and public comments, and GovInfo publications. Returns title, citation, agency, and dates with a provenance URL. For regulatory compliance, policy monitoring, and rulemaking research. Court opinions are a separate skill. $0.05 per search.
  federal regulationsrulemakingCFRFederal RegisterlegislationCongressregulatory compliancepolicy monitoringdockets
• Scholarly research search
  Search 1.2 million+ scholarly works: arXiv 700,000+ preprints, PubMed, OpenAlex, Semantic Scholar, Crossref, ClinicalTrials.gov. Frontier science coverage with citations and provenance. $0.05 per search.
  researchpaperssciencescholarly
• SEC filings search
  SEC EDGAR filings, 13F institutional holdings, insider transactions, litigation and administrative proceedings, GLEIF entity data. $0.05 per search, records from $0.01.
  secfilingsfinancesecurities
• Entity lookup
  Company and entity resolution across SEC EDGAR CIK, GLEIF LEI, FDIC, CMS NPI, and IRS EO BMF EIN registries. $0.05 per lookup.
  entitycompanylei
• Healthcare records search
  CMS provider registry, RxNorm drug concepts, ClinicalTrials.gov studies, FDA drug and device recall enforcement to 2004. $0.05 per search.
  healthcareprovidersdrugstrials
• Government spending search
  Federal awards, contract opportunities, FEC campaign finance, Senate LDA lobbying disclosures. $0.05 per search.
  governmentspendingcontractsfec
• Economic indicators search
  FRED, BLS, BEA, Census, FDIC, USDA data series. $0.05 per search.
  economicsindicatorsstatistics
• Environment data search
  EPA, NOAA, USGS environmental and hazard records. $0.05 per search.
  environmentclimateepa
• Consumer protection search
  CPSC and NHTSA recalls, FDA enforcement actions. $0.05 per search.
  consumerrecallssafety
• US patent search
  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, and USPC classification with a provenance URL. For prior art checks, freedom to operate research, competitor IP monitoring, and patent portfolio lookup.
  patentsusptointellectual propertyprior artip researchfreedom to operate
• FAA aircraft registry search
  Search US civil aircraft registrations from the FAA Releasable Aircraft Database by tail number (N number), registered owner, city, state, serial number, or year of manufacture. Returns tail number, registrant, location, manufacture year, and airworthiness class with a provenance URL. For aircraft ownership lookup, fleet research, asset tracing, and counterparty due diligence.
  aircraftfaatail numberaviationownership lookupasset tracingdue diligence
• AI model registry search
  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, and download and like counts with a provenance URL. For model selection, license screening, and dependency review.
  ai modelsmachine learninghugging facemodel registryllmmodel licensemlops
• Broker and investment adviser disciplinary check
  Live check of a stockbroker, investment adviser, or brokerage firm against the FINRA BrokerCheck registry. Returns CRD number, registration status and scope, disclosure flags covering regulatory actions, customer disputes and terminations, permanent bar status, current employers, and a FINRA provenance URL per match. For KYC, AML, counterparty due diligence, adviser vetting, and investment fraud checks. Companion to the eleven authority sanctions screen.
  finrabrokercheckbroker checkinvestment adviserdisciplinary historycompliancedue diligencekycamlinvestment fraud

How to call

https://api.osf-master-server.com/mcp

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