# DeepSearch KRX Stock 3-Year Daily Price History

> DeepSearch KRX Stock 3-Year Daily Price History is a paid API for AI agents from x402.deepsearch.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Returns ~780 daily closing price data points (up to 3 years back) for a KRX or US stock, including date, close price, change %, and market cap.

## Facts

- Endpoint: GET https://x402.deepsearch.com/v1/context/stock/:ticker/3y
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/deepsearch-krx-stock-3-year-daily-price-history-adbe6f8e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6m8Z385dJFxj9u5idjCij

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-krx-stock-3-year-daily-price-history-adbe6f8e
```

Example prompt: Can you pull the full 3-year daily closing price history for Samsung Electronics (KRX ticker 005930) on the KRX exchange, including the market cap and daily change percentages?

## When to prefer this

Use this endpoint when you need the longest available daily price history (up to 3 years, ~780 points) for a KRX-listed or supported US stock — ideal for long-term trend analysis, backtesting strategies, or computing multi-year technical indicators. Prefer the 1-month or 1-year endpoints if you only need shorter windows and want to minimize cost.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an error or empty dataset
- Unsupported exchange code results in a default KRX lookup or error
- Stock with limited trading history returns fewer than 780 data points
- Payment failure (insufficient USDC) blocks the request with a 402 response
- Rate limiting or network timeout returns a 429 or 5xx error

## How this service works

3-year daily closing price history (~780 data points, up to 3 years back). Returns date, close price, change %, and market cap.

## Output

An array of approximately 780 daily data points covering up to 3 years of trading history, each containing: the date, closing price, percentage change from the previous day, and market capitalization for the requested stock.

## 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": "6-digit KRX ticker or US symbol"
      },
      "exchange": {
       "type": "string",
       "description": "Exchange code. Default: KRX"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/deepsearch-krx-stock-3-year-daily-price-history-adbe6f8e/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)