Resolve SEC CIK <-> ticker in both directions. Pass a ticker to get its CIK; pass a CIK to get every ticker the issuer has (each share class, e.g. GOOG + GOOGL), each with its listing exchange (Nasdaq, NYSE, etc.) and the canonical company name. The CIK is the key to everything in EDGAR -- filings, XBRL facts, Form 4 insider trades, 13F holdings -- so this is the join that turns a ticker an agent has into the identifier EDGAR actually indexes by (and back). Data: SEC company_tickers_exchange.json (US public domain), cached and refreshed daily. Distinct from finance.security-resolve, which also crosses into FIGI/LEI/ISIN; this one is the focused, exchange-aware CIK<->ticker map.
/api/finance/cik-tickerPAYMENT-SIGNATURE.The cik ticker API is a pay-per-call finance endpoint built for AI agents and autonomous software. Resolve SEC CIK <-> ticker in both directions.
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 cik ticker data source for an agent tool-use loop, an MCP host, or a backend that needs finance data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
cik | string | SEC CIK, leading zeros optional, e.g. 320193 or 0000320193. min 1 chars · max 13 chars |
ticker | string | US stock ticker, e.g. AAPL or GOOGL. min 1 chars · max 12 chars |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/finance/cik-ticker?cik=example&ticker=example' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/finance/cik-ticker?cik=example&ticker=example' \ -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/finance/cik-ticker?cik=example&ticker=example'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.finance.cikTicker({
"cik": "example",
"ticker": "example"
})
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.finance.cik_ticker(cik="example", ticker="example")
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": "finance.cik-ticker",
"arguments": {
"cik": "example",
"ticker": "example"
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object |
{
"ok": true,
"items": [
{
"resolvedFrom": "cik",
"cik": "example",
"name": "example",
"tickers": [
{
"ticker": "example",
"exchange": "example"
}
]
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
}
}