OSF — Open Source Filings · Verifiable public-data infrastructure for autonomous agents
OSF API delivers verifiable public-domain data records via micropayments for autonomous agents on Base blockchain.
Trust signal
4 of 4 pillars
coverage 100%
Pillars
Signals
Evidence tiers, not an endorsement · trust model v0.1.0 (provisional) · CDP-lane settlement only (D3) · Trust API coming soon
On-chain traction
ERC-8004 agent registry
Not found in the ERC-8004 agent registry. This is the default state — absence is not a negative signal.
Identity & classification
Settlement volume
USDC settled on-chain · monthly
as of Jul 12, 2026
Endpoints(8)
Entity and counterparty verification by identifier or name. Resolves US healthcare providers (CMS NPI), global legal entities (GLEIF LEI), US insured banks (FDIC), and SEC filers (EDGAR CIK). Returns legal name, status, jurisdiction, identifiers, and a provenance URL to the official source. For KYC, KYB, due diligence, and onboarding agent workflows.
CVE 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.
Security and vulnerability data, one record per call: NVD CVE with CVSS severity, CISA KEV actively-exploited status, EPSS daily exploitation scores, GitHub Security Advisories, CWE weakness classes, MITRE ATTACK techniques. Full JSON plus a provenance URL to the primary source.
Purchase one verified OSF record ($0.05 tier) - returns the full record with a provenance URL back to its authoritative U.S. government or scientific primary source. OSF spans security, sanctions/compliance, SEC filings, economic, legal/regulatory, procurement, research, geospatial, and AI/ML data.
Real time sanctions screening by name. Screens a person or entity against the full US OFAC SDN list (19,000+ designations), EU consolidated sanctions, and UK OFSI list in one call. Returns hit or no hit, matched names, linked entities, sanctions programs, official source provenance URLs, and an audit receipt. For AML compliance, KYC, KYB, watchlist and counterparty screening.
Purchase one verified OSF record ($0.30 tier) - returns the full record with a provenance URL back to its authoritative U.S. government or scientific primary source. OSF spans security, sanctions/compliance, SEC filings, economic, legal/regulatory, procurement, research, geospatial, and AI/ML data.