identity · Listed · Found · 50 endpoints · Gateway-eligible
OSF — Open Source Filings Data Marketplace
OSF — Open Source Filings Data Marketplace
Verifiable, provenance-stamped public-record data for autonomous agents. Every record links back to its primary U.S. government or public source, so an agent ca
Indexed from this operator's public /.well-known/x402.json. Found is not operator-owned and is not attested. Claim or opt out.
Agent Read · Cleared Index
CAUTION
Caution — usable signal, incomplete attestation or mesh.
confidence
67%
source
signal
Index before you pay. Same payload for agents:
GET /api/cleared/agent-read?slug=osf-open-source-filings-data-marketplace-bagj
When to call
- Budget between $0.00 and $0.3 per call on published endpoints.
- Verifiable, provenance-stamped public-record data for autonomous agents. Every record links back to its primary U.S. government or public source, so an agent ca
Risks
- Found — not operator-owned; claim status unknown.
- No Cleared settlement receipt on file yet.
- Uptime not yet marked stable.
- No Gateway traffic yet — market share unproven.
Price posture
Published 50 endpoints from $0.00 to $0.3.
Category · Gateway
identity · no Gateway routes yet — early / unproven on Cleared market share.
Endpoint hints
GET /.well-known/x402.jsonGET /.well-known/x402.json at Free.
GET /x402/models/search/:querySearch AI and machine learning models on the Hugging Face Hub by name, author or organization, task, library, or license. Returns model id, author, task pipelin
GET /x402/broker/check/:queryLive disciplinary check of a stockbroker, investment adviser, or brokerage firm against the FINRA BrokerCheck registry. Returns CRD number, registration status,
GET /x402/buy/annual/:record_idBuy one verified annual report or filing record by record id from the OSF catalog. Returns the full JSON payload plus a provenance URL to the authoritative prim
GET /x402/buy/security/:record_idBuy one verified security or vulnerability record by record id from the OSF catalog. Returns the full JSON payload plus a provenance URL to the authoritative pr
GET /x402/buy/standard/:record_idBuy one verified record by record id from the OSF catalog, standard tier. Returns the full JSON payload plus a provenance URL to the authoritative primary sourc
GET /x402/security/cve/:cve_idCVE lookup and exploit check by CVE id. Answers is this CVE actively exploited in the wild using the US CISA Known Exploited Vulnerabilities (KEV) catalog, with
GET /x402/consumer/protection/:querySearch US consumer protection data by keyword: financial complaints (CFPB), vehicle recalls (NHTSA), product safety recalls (CPSC), and FDA recall enforcement f
Evidence (Cleared)
- → Intake verified · Gateway-eligible
- → Trust 55/100 · fail · tier listed
- → Protocol x402
- → Manifest reachable · schema valid
- → Found listing — indexed from public x402.json, not operator-attested.
Endpoints
X402 manifest
FreeGET https://api.osf-master-server.com/.well-known/x402.jsonOSF AI Model Search (Hugging Face Hub metadata)
$0.00GET https://api.osf-master-server.com/x402/models/search/:querySearch 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 and a provenance URL per match. For model selection, license screening, dependency review, and tracking which models an organization publishes.
OSF BrokerCheck Lookup (FINRA disciplinary history)
$0.00GET https://api.osf-master-server.com/x402/broker/check/:queryLive disciplinary check of a stockbroker, investment adviser, or brokerage firm against the FINRA BrokerCheck registry. Returns CRD number, registration status, disclosure flag, permanent bar flag, employers, and a FINRA provenance URL per match. For KYC, AML, counterparty due diligence, adviser vetting, and fraud checks. Companion to the 11 authority sanctions screen.
OSF Buy Record, Annual Report Tier
$0.3GET https://api.osf-master-server.com/x402/buy/annual/:record_idBuy one verified annual report or filing record by record id from the OSF catalog. Returns the full JSON payload plus a provenance URL to the authoritative primary source and a hashed audit receipt. Record ids and live per record prices come from the free MCP catalog at https://api.osf-master-server.com/mcp. USDC on Base, no account and no API key.
OSF Buy Record, Security Tier
$0.04GET https://api.osf-master-server.com/x402/buy/security/:record_idBuy one verified security or vulnerability record by record id from the OSF catalog. Returns the full JSON payload plus a provenance URL to the authoritative primary source and a hashed audit receipt. Record ids and live per record prices come from the free MCP catalog at https://api.osf-master-server.com/mcp. USDC on Base, no account and no API key.
OSF Buy Record, Standard Tier
$0.05GET https://api.osf-master-server.com/x402/buy/standard/:record_idBuy one verified record by record id from the OSF catalog, standard tier. Returns the full JSON payload plus a provenance URL to the authoritative primary source and a hashed audit receipt. Record ids and live per record prices come from the free MCP catalog at https://api.osf-master-server.com/mcp. USDC on Base, no account and no API key.
OSF CVE Exploit Check (CISA KEV, EPSS, CVSS)
$0.00GET https://api.osf-master-server.com/x402/security/cve/:cve_idCVE lookup and exploit check by CVE id. Answers is this CVE actively exploited in the wild using the US CISA Known Exploited Vulnerabilities (KEV) catalog, with the EPSS exploitation probability score and CVSS severity. Each field carries a provenance URL to the official US source. For vulnerability management, patch prioritization, threat intelligence, and DevSecOps agents.
OSF Consumer Protection Search (CFPB, FDA recalls, CPSC, NHTSA)
$0.00GET https://api.osf-master-server.com/x402/consumer/protection/:querySearch US consumer protection data by keyword: financial complaints (CFPB), vehicle recalls (NHTSA), product safety recalls (CPSC), and FDA recall enforcement for drugs, devices, and food (openFDA, full history since 2004). Returns product/company, complaint or recall details, dates, and a provenance URL per match. For consumer risk, product safety, and compliance agents.
OSF Economic Indicators Search (FRED, BEA, BLS, Treasury, Census)
$0.00GET https://api.osf-master-server.com/x402/economic/indicators/:querySearch economic indicators by keyword: Federal Reserve series (FRED), World Bank development data, US Treasury rates, national accounts (BEA), labor statistics (BLS), commitments of traders (CFTC), ECB foreign-exchange rates, and energy data (EIA). Returns indicator, value, period, and a provenance URL per match. For macroeconomic, financial, and research agents.
OSF Entity Lookup (CMS NPI, GLEIF LEI, FDIC, SEC EDGAR)
$0.00GET https://api.osf-master-server.com/x402/identity/entity/:queryEntity and counterparty verification by identifier or name. Resolves US healthcare providers (CMS NPI), legal entities (GLEIF LEI), US banks (FDIC), SEC filers (EDGAR CIK or ticker), and US tax exempt orgs (IRS EIN). Returns legal name, status, jurisdiction, identifiers, and a provenance URL to the official source. For KYC, KYB, due diligence, and onboarding agent workflows.
OSF Environmental and Earth Data Search (NOAA, USGS, EPA, FEMA, GBIF)
$0.00GET https://api.osf-master-server.com/x402/environment/data/:querySearch US environmental data by keyword: water quality and streamflow (USGS), weather, tides and space weather (NOAA), volcanic and hazard alerts, species occurrences (GBIF), disaster declarations (FEMA), and facility compliance (EPA). Returns location, measurement, dates, and a provenance URL per match. For climate, environmental, and geospatial agents.
OSF Federal Spending Search (contract awards, solicitations, grants)
$0.00GET https://api.osf-master-server.com/x402/gov/spending/:querySearch US federal spending by keyword: contract awards (USAspending), open solicitations (SAM.gov), and grant funding opportunities (Grants.gov) in one call. Returns recipient or agency, dollar amount, dates, NAICS, and a provenance URL to the official source per match. For govcon market intelligence, competitor award tracking, and procurement agents.
OSF Healthcare Records Search (CMS NPI, RxNorm, ClinicalTrials, FDA)
$0.00GET https://api.osf-master-server.com/x402/healthcare/records/:querySearch US healthcare data by keyword: CMS NPPES NPI provider records, NLM RxNorm drug concepts, ClinicalTrials.gov studies, and FDA recall enforcement for drugs, devices, and food (openFDA, full history since 2004). Verify a provider or NPI, resolve a drug to its RxCUI, check trial status, or check a product for recalls. Returns identifiers, key facts, and a provenance URL per match.
OSF Research Paper Search (arXiv, PubMed, CrossRef, OpenAlex, ClinicalTrials)
$0.00GET https://api.osf-master-server.com/x402/research/papers/:querySearch 1.2 million+ scholarly works by keyword across arXiv (700,000+ preprints, all categories, 2024 to 2026), CrossRef, PubMed, OpenAlex, Semantic Scholar, and ClinicalTrials.gov in one call. Returns title, authors, journal or venue, year, DOI, and a provenance URL per match. For research agents, literature review, citation lookup, and clinical evidence workflows.
OSF SEC Filings Search (EDGAR 13F, Form 4, 8K, XBRL)
$0.00GET https://api.osf-master-server.com/x402/sec/filings/:querySearch US SEC filings by keyword: institutional holdings (13F), insider transactions (Form 4), 8-K/10-K/10-Q filings, XBRL financials, full-text EFTS hits, litigation and administrative proceedings. Returns filer or company, form type, filing date, and a provenance URL per match. For financial research, compliance, and due-diligence agents.
OSF Sample Any Record ($0.001 full payload)
$0.00GET https://api.osf-master-server.com/x402/sample/:record_idSample any single record in the OSF catalog for $0.001: the full JSON payload plus a provenance URL to the authoritative primary source. A low cost way for an autonomous agent to try the data before buying at the standard per record or search price. One verified record per call keyed by record_id from the free catalog, across 80 sources of US government and scientific data. Fair use daily cap per wallet.
OSF Sanctions Screening (OFAC SDN, EU, UK)
$0.00GET https://api.osf-master-server.com/x402/screen/sanctions/:nameSanctions and watchlist screening across 11 authorities and 291,000+ parties in one call: OFAC SDN and Consolidated, EU Consolidated, UK OFSI, UN Security Council, Trade.gov CSL, FBI Wanted, World Bank debarment, HHS OIG exclusions, SAM.gov exclusions, and Federal Reserve enforcement actions. Returns matched names, programs, provenance URLs, and a hashed audit receipt. For AML compliance, KYC, KYB, and counterparty screening. $0.05 USDC on Base, no account and no API key.
OSF Threat Intelligence Search (NVD, CVE Program, EUVD, CISA KEV, EPSS, CWE)
$0.00GET https://api.osf-master-server.com/x402/cyber/threats/:querySearch cybersecurity intelligence by keyword, vendor, or product: the full NVD CVE corpus since 1988, CVE Program records, EU EUVD vulnerabilities, CISA KEV, 3,900+ CISA ICS advisories, EPSS scores, GitHub advisories, the full CWE catalog, and MITRE ATT&CK. Returns id, title, severity or score, and a provenance URL per match. For threat intel, vulnerability management, DevSecOps.
OSF US Aircraft Registration Search (FAA Releasable Aircraft Database)
$0.00GET https://api.osf-master-server.com/x402/aircraft/search/:querySearch 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, airworthiness class and a provenance URL per match. For aircraft ownership lookup, fleet research, asset tracing, and counterparty due diligence.
OSF US Case Law Search (1.55M federal court opinions)
$0.00GET https://api.osf-master-server.com/x402/legal/cases/:queryLook up US federal court cases by case name, party, court, or citation across 1.55 million+ opinion records: SCOTUS all time and all 13 federal appellate circuits (CourtListener), plus SEC litigation releases and SEC administrative proceedings. Returns case name, court, date, citations and a provenance URL per match. Case metadata and citations, not opinion full text.
OSF US Patent Search (USPTO Open Data Portal)
$0.00GET https://api.osf-master-server.com/x402/patents/search/:querySearch granted US patents from the USPTO Open Data Portal by keyword: invention title, assignee company, inventor name, patent number, or technology area. Returns patent number, title, grant date, filing date, assignee, inventors, USPC classification and a provenance URL per match. For prior art checks, freedom to operate research, competitor IP monitoring, and patent portfolio lookup.
OSF US Regulations and Rulemaking Search (eCFR, Federal Register, Congress.gov)
$0.00GET https://api.osf-master-server.com/x402/regulations/law/:querySearch 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, dates, and a provenance URL per match. For regulatory compliance, policy monitoring, and rulemaking research.
Checks
reachable
valid
2026-08-24T21:30:30.765Z
No settlement evidence found in chain signals.
Gateway routing
Verified (or paid Cleared) — Gateway may route this origin before pay.
Claim this listing to upgrade to Cleared attestation.
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