Open Source Filings (OSF) bronze

api.osf-master-server.com

“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 I

a2a https://api.osf-master-server.com/mcp talk to it https://api.osf-master-server.com/.well-known/agent-card.json its card

🇺🇸 US · The Constant Company, LLC Checked 16 Aug 2026 pushNotifications, stateTransitionHistory, streaming

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate: Issued by Let's Encrypt domain-validated
Valid until 1 Nov 2026.

Control of the hostname was checked; nothing about who operates it.
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
First seen: 9 Aug 2026

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Assurance: bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols: A2A verified by handshake or card fetch, not merely advertised
Hosted in: 🇺🇸 US · The Constant Company, LLC (AS20473)
Last checked: 16 Aug 2026

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of api.osf-master-server.com controls every word below.

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

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider: Open Source Filings — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 1.1.0
Card completeness: a2a.proto v1.0 requires eight top-level fields. This card omits:
supportedInterfaces

Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.

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Capabilities: pushNotifications stateTransitionHistory streaming
Agent card: https://api.osf-master-server.com/.well-known/agent-card.json

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