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OSF Broker/Investment Adviser Check
x402
OSF Broker/Investment Adviser Check is a paid API for AI agents from api.osf-master-server.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-12).
Searches FINRA BrokerCheck by name to retrieve registration status, CRD number, disclosure flags, and permanent bar status for brokers and investment advisers
Price / call$0.05
Success—
StatusUnknown
How this service works
OSF is a live marketplace of provenance stamped public domain government and scientific data, built for autonomous agents that pay per record over x402 micropayments on Base. A paid MCP server in the official MCP Registry, discoverable on the Coinbase CDP Bazaar.
Output
A JSON object with a result status (e.g. MATCHES_FOUND), an array of matching individuals or firms each containing their full name, CRD number, entity kind, a provenance URL linking back to the official FINRA BrokerCheck record, a boolean for whether disclosures exist, and a boolean for permanent bar status. Also includes a total match count and a top-level disclosure flag.
Example use cases
Vetting a new financial adviser
“Before I move my retirement savings, can you check FINRA BrokerCheck for 'John Anthony Sullivan' and tell me if he's registered, has any disclosures, or has ever been barred from the industry?”
Due diligence on a hedge fund broker
“I'm doing due diligence on Citadel Advisors — can you pull their FINRA registration info and flag any regulatory disclosures or enforcement actions?”
Fraud investigation background check
“We're researching a potential Ponzi scheme — can you look up 'Bernard Madoff' on FINRA BrokerCheck and confirm if he's permanently barred and how many disclosures are on his record?”
Technical details
Endpoint
GEThttps://api.osf-master-server.com/x402/broker/check/%7Bquery%7D?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative, provenance-stamped FINRA BrokerCheck data about a specific broker, investment adviser, or firm — especially for compliance workflows, fraud detection, or due diligence where a verifiable source URL matters. Prefer this over general web search when you need structured fields like CRD number, disclosure flags, and bar status in a single machine-readable response. The $0.05 per-call micropayment model makes it cost-effective for single lookups within autonomous agent pipelines.
Side effects
- No matches found for an obscure or misspelled name — returns empty matches array
- Name is too generic and returns too many matches requiring disambiguation
- FINRA BrokerCheck data may lag real-time regulatory actions by days
- Payment failure or insufficient USDC balance blocks the request
- Firm names vs individual names may return different result shapes
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "MATCHES_FOUND",
"matches": [
{
"kind": "individual",
"name": "BERNARD LAWRENCE MADOFF",
"crd_number": "316687",
"provenance_url": "https://brokercheck.finra.org/individual/summary/316687",
"has_disclosures": true,
"permanently_barred": true
}
],
"match_count": 1,
"disclosure_flag_present": true
}
}Tags
x402
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