# get_option_expiration_dates

Get available option expiration dates for a given stock symbol.

Agent View of the PolicyLayer registry record for `get_option_expiration_dates`. HTML page: https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-option-expiration-dates

## Facts

- Tool: `get_option_expiration_dates`
- Server: Yahoo Finance MCP Server (`a05031113/yahoo-fianace-mcp`) — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp.md
- Homepage: https://github.com/a05031113/yahoo-fianace-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": "get_option_expiration_dates",
    "arguments": {}
  }
}
```

## Why get_option_expiration_dates is rated Low

This tool queries and returns option expiration date information for a stock. It performs a read-only operation that retrieves data with no side effects, no code execution, no data modification, and no financial transactions. The data retrieved is publicly available market metadata.

From the tool's own definition: "Tool name 'get_option_expiration_dates' and description 'Get available option expiration dates for a given stock symbol' indicate retrieval of publicly available market data without modification or execution of trades."

## Use case

AI agents call get_option_expiration_dates 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": {
    "get_option_expiration_dates": {}
  }
}
```

## Other tools on Yahoo Finance MCP Server (19)

- `get_analyst_price_targets` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-analyst-price-targets.md
- `get_balance_sheet` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-balance-sheet.md
- `get_cashflow` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-cashflow.md
- `get_company_info` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-company-info.md
- `get_current_stock_price` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-current-stock-price.md
- `get_dividends` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-dividends.md
- `get_earning_dates` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-earning-dates.md
- `get_historical_stock_prices` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-historical-stock-prices.md
- `get_income_statement` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-income-statement.md
- `get_institutional_holders` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-institutional-holders.md
- `get_major_holders` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-major-holders.md
- `get_mutualfund_holders` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-mutualfund-holders.md
- `get_news` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-news.md
- `get_option_chain` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-option-chain.md
- `get_recommendations` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-recommendations.md
- `get_splits` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-splits.md
- `get_stock_price_by_date` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-stock-price-by-date.md
- `get_stock_price_date_range` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-stock-price-date-range.md
- `get_sustainability` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-sustainability.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=a05031113-yahoo-fianace-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/a05031113-yahoo-fianace-mcp