# search_companies

根据关键字搜索公司

Agent View of the PolicyLayer registry record for `search_companies`. HTML page: https://policylayer.com/tools/16coffee-finance-mcp/search-companies

## Facts

- Tool: `search_companies`
- Server: Yahoo Finance MCP Server (`16coffee/finance-mcp`) — https://policylayer.com/tools/16coffee-finance-mcp.md
- Homepage: https://github.com/16Coffee/finance-mcp
- Risk category: Read (Low risk)
- Registry record: grade A, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "search_companies",
    "arguments": {}
  }
}
```

## Why search_companies is rated Low

This tool retrieves company data based on search criteria without creating, modifying, deleting, or executing operations. It is a simple read/query operation consistent with the Yahoo Finance server's stated purpose of providing data retrieval. The blast radius of misuse is minimal—an AI agent could only retrieve publicly available financial information.

From the tool's own definition: "Tool name 'search_companies' and description indicate keyword-based search for company information. The function performs a query operation with no data modification or side effects."

## Use case

AI agents call search_companies to retrieve information from Yahoo Finance MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Yahoo Finance MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_companies": {}
  }
}
```

## Other tools on Yahoo Finance MCP Server (33)

- `get_all_crypto_quotes` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-all-crypto-quotes.md
- `get_analyst_estimates` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-analyst-estimates.md
- `get_calendar_data` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-calendar-data.md
- `get_crypto_intraday` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-crypto-intraday.md
- `get_crypto_latest_news` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-crypto-latest-news.md
- `get_crypto_list` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-crypto-list.md
- `get_crypto_news` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-crypto-news.md
- `get_crypto_price_eod` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-crypto-price-eod.md
- `get_crypto_quote` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-crypto-quote.md
- `get_crypto_quote_short` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-crypto-quote-short.md
- `get_dcf_valuation` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-dcf-valuation.md
- `get_directory_list` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-directory-list.md
- `get_economic_data` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-economic-data.md
- `get_executive_info` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-executive-info.md
- `get_financial_statement` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-financial-statement.md
- `get_historical_stock_prices` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-historical-stock-prices.md
- `get_ma_data` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-ma-data.md
- `get_news_sentiment` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-news-sentiment.md
- `get_option_chain` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-option-chain.md
- `get_option_expiration_dates` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-option-expiration-dates.md
- `get_price_target_info` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-price-target-info.md
- `get_ratings` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-ratings.md
- `get_shares_float_info` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-shares-float-info.md
- `get_stock_actions` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-stock-actions.md
- `get_stock_grade_latest_news` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-stock-grade-latest-news.md
- `get_stock_grade_news` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-stock-grade-news.md
- `get_stock_grades` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-stock-grades.md
- `get_stock_grades_historical` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-stock-grades-historical.md
- `get_stock_grades_summary` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-stock-grades-summary.md
- `get_stock_info` — Read — https://policylayer.com/tools/16coffee-finance-mcp/get-stock-info.md
- …and 3 more: https://policylayer.com/tools/16coffee-finance-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=16coffee-finance-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/16coffee-finance-mcp