# DeepSearch US Stock Intelligence API

> DeepSearch US Stock Intelligence API is a paid API for AI agents from x402.deepsearch.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns current price, market cap, and financial context for a US-listed stock ticker (NASDAQ/NYSE)

## Facts

- Endpoint: GET https://x402.deepsearch.com/v1/context/us/company/%7Bticker%7D
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/deepsearch-us-stock-intelligence-api-d4909df1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mLSSApt3ITaqCxHK5ooek

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 deepsearch-us-stock-intelligence-api-d4909df1
```

Example prompt: What is the current stock price and market cap for NVDA on NASDAQ? I need DeepSearch to pull the latest financial context for it.

## When to prefer this

Choose this endpoint when you need quick pay-per-query access to US stock price and market cap data without a subscription, especially when integrating with crypto-native payment workflows on Base Mainnet. Prefer it over subscription APIs for low-frequency, ad-hoc lookups of NASDAQ or NYSE stocks by ticker symbol.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an error or empty result
- Exchange parameter mismatch (e.g. NYSE ticker queried as NASDAQ) may return no data
- Payment failure (insufficient USDC on Base Mainnet) blocks the request
- Rate or quota issues may return 402 Payment Required
- Delisted or OTC stocks may not be found in the dataset

## How this service works

Up to 10 years of financials + 3 years of daily price history for all 2,000+ KRX stocks. Pay-per-query with USDC on Base Mainnet — no subscription.

## Output

Returns a JSON object containing the stock's closing price, ticker symbol, exchange, company name (may be in Korean), and market capitalization in USD. Example: {close: 327.5, ticker: 'AAPL', exchange: 'NASDAQ', companyName: '애플', marketCapUSD: 4901758191440}.

## 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"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "ticker"
     ],
     "properties": {
      "ticker": {
       "type": "string",
       "description": "US symbol, e.g. AAPL, NVDA, TSM"
      },
      "exchange": {
       "type": "string",
       "description": "NASDAQ (default probe) or NYSE"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "close": 327.5,
  "ticker": "AAPL",
  "exchange": "NASDAQ",
  "companyName": "애플",
  "marketCapUSD": 4901758191440
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/deepsearch-us-stock-intelligence-api-d4909df1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.deepsearch.com](https://www.zero.xyz/host/x402.deepsearch.com/llms.txt)