# OSF Broker/Investment Adviser Check

> 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

## Facts

- Endpoint: GET https://api.osf-master-server.com/x402/broker/check/%7Bquery%7D?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/osf-broker-investment-adviser-check-4d94502f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w_lJxzdujeQYrb8V3UufF

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability osf-broker-investment-adviser-check-4d94502f
```

Example prompt: Can you check FINRA BrokerCheck for 'Raymond James Financial Services' and tell me if they have any disclosures or disciplinary actions on record?

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "query"
     ],
     "properties": {
      "query": {
       "type": "string",
       "description": "Broker, investment adviser, or firm name to check. E.g. 'Bernard Madoff' or 'Citadel Advisors'."
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/osf-broker-investment-adviser-check-4d94502f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.osf-master-server.com](https://www.zero.xyz/host/api.osf-master-server.com/llms.txt)