# DeepSearch Hot Companies – Korean News Burst Ranking

> DeepSearch Hot Companies – Korean News Burst Ranking is a paid API for AI agents from x402.deepsearch.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-12).

Returns Korean listed companies with the sharpest news surge relative to their own history over a configurable look-back window, ranked by burst ratio, volume, or positive sentiment, with article counts, headlines, DART filings, and distress flags.

## Facts

- Endpoint: GET https://x402.deepsearch.com/v1/context/hot-companies?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/deepsearch-hot-companies-korean-news-burst-ranking-4df77f99
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vvqs_iW_c2pTidQRX1bax

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-hot-companies-korean-news-burst-ranking-4df77f99
```

Example prompt: Which Korean listed companies have the sharpest news burst compared to their own history over the last 7 days? Rank by burst ratio, show me the top 10, and flag any with distress signals.

## When to prefer this

Choose this endpoint when you need to identify which Korean KRX-listed companies are experiencing abnormal media attention relative to their own historical baseline — particularly useful for momentum screening, early distress detection, or news-driven event analysis. Unlike generic trending endpoints, this measures burst ratio against each company's own history (not absolute volume), making it sensitive to genuine anomalies for smaller-cap names. Prefer over volume-based alternatives when you want to catch emerging stories before they become widely known.

## Known failure modes

- Invalid 'days' value outside 1-30 range returns an error
- Invalid 'by' enum value (not burst/volume/positive) returns a validation error
- Invalid 'limit' value outside 1-30 range returns an error
- No companies meet the burst threshold for the given window — returns empty hot_companies array
- Payment failure (insufficient USDC balance) blocks the request

## How this service works

Korean listed companies with the sharpest news surge versus their own history over the last N days (default 7), each with article count, burst ratio, net sentiment, representative headlines and same-period DART filings, plus a distress flag for halts or designation risk. by=burst (default), volume, or positive.

## Output

A JSON object containing the look-back date range, the ranking method used, and an ordered list of hot companies each with: company code, name, article count, burst ratio (news volume vs own baseline), net sentiment score, representative Korean-language headlines, same-period DART regulatory filings, and a boolean distress flag indicating halt or designation risk.

## 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"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "by": {
       "enum": [
        "burst",
        "volume",
        "positive"
       ],
       "type": "string",
       "description": "Ranking: burst (vs own history, default), volume (absolute), positive (good news only)"
      },
      "days": {
       "type": "string",
       "description": "Look-back window in days, 1-30 (default 7)"
      },
      "limit": {
       "type": "string",
       "description": "Max rows, 1-30 (default 15)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "date_to": "2026-10-01",
   "date_from": "2026-09-25",
   "ranked_by": "burst",
   "hot_companies": [
    {
     "code": "056190",
     "name": "(주)에스에프에이",
     "articles": "22",
     "headlines": [
      "SFA, 로봇 사업화 본궤도…"
     ],
     "sentiment": 0.25,
     "burst_ratio": 19.56,
     "disclosures": [],
     "distress_flag": false
    }
   ]
  },
  "packType": "hot-companies"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/deepsearch-hot-companies-korean-news-burst-ranking-4df77f99/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)