FINRA BrokerCheck lookup — every US registered broker / investment advisor (~620k current + former). Search by free-text query (name + firm) or by CRD number for a direct individual record. Each result includes CRD ID, name (with any 'doing business as' aliases), broker-check + IA scope (Active/Inactive), a hasDisclosures flag (yes/no for complaints, settlements, terminations on file), industry-start date, FINRA registration count, and current + previous employments (firm name, branch city/state, registration dates). Public per FINRA's investor-protection BrokerCheck program; pair with /api/finance/sec-filings for cross-reference.
/api/license/brokerPAYMENT-SIGNATURE.The broker API is a pay-per-call license endpoint built for AI agents and autonomous software. FINRA BrokerCheck lookup — every US registered broker / investment advisor (~620k current + former).
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in broker data source for an agent tool-use loop, an MCP host, or a backend that needs license data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
query | string | min 2 chars · max 200 chars |
crd | string | match ^\d{1,9}$ |
limit | integer | min 1 · max 50 |
offset | integer | min 0 · max 10000 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/license/broker?query=xx&crd=12345&limit=10&offset=0' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/license/broker?query=xx&crd=12345&limit=10&offset=0' \ -H 'PAYMENT-SIGNATURE: <base64-json-payload>' # Or use the canonical runner (handles probe → sign → retry): # EVM_PRIVATE_KEY=0x... node --env-file=.env.local \ # --experimental-strip-types scripts/x402-pay.ts \ # 'https://2s.io/api/license/broker?query=xx&crd=12345&limit=10&offset=0'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.license.broker({
"query": "xx",
"crd": "12345",
"limit": 10,
"offset": 0
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.license.broker(query="xx", crd="12345", limit=10, offset=0)
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
// EVM_PRIVATE_KEY funds x402 payments per call.
// claude_desktop_config.json
{
"mcpServers": {
"2sio": {
"command": "npx",
"args": ["-y", "@2sio/mcp"],
"env": { "EVM_PRIVATE_KEY": "0x..." }
}
}
}
// 2. Once the server is running, agents call this tool via standard MCP:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "license.broker",
"arguments": {
"query": "xx",
"crd": "12345",
"limit": 10,
"offset": 0
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object | |
meta | object |
{
"ok": true,
"items": [
{
"crd": "example",
"firstName": "example",
"middleName": "example",
"lastName": "example",
"otherNames": [
"example"
],
"bcScope": "example",
"iaScope": "example",
"hasDisclosures": false,
"yearsInIndustryStart": "example",
"finraRegistrationCount": 1,
"employmentCount": 1,
"currentEmployments": [
{
"firmId": "example",
"firmName": "example",
"branchCity": "example",
"branchState": "example",
"registrationBeginDate": "example"
}
],
"previousEmployments": [
{
"firmId": "example",
"firmName": "example",
"registrationBeginDate": "example",
"registrationEndDate": "example"
}
]
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
},
"meta": {
"query": {
"query": "example",
"crd": "example",
"limit": 1,
"offset": 1
},
"returned": 1
}
}