Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Stock Price MCP Server get price for AAPL"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MCP (Model Context Protocol) server that provides real-time stock price information using Yahoo Finance API.
📈 Real-time stock price data
🕐 Price update timestamps
🏦 Market state information (PRE, REGULAR, AFTER, POST, CLOSED)
💱 Multi-currency support
🌍 Global market coverage
🆓 Completely free with no rate limits
Related MCP server: Stock Data MCP Server
npm install
npm run buildAdd to your MCP client configuration:
{
"mcpServers": {
"stock-price": {
"command": "node",
"args": ["/path/to/stock-price-mcp/dist/index.js"]
}
}
}get_stock_priceGet real-time stock price information for a ticker symbol.
Input:
{
"ticker": "AAPL"
}Output:
{
"ticker": "AAPL",
"last_price": 150.25,
"timestamp": "2024-01-15T16:00:00.000Z",
"market_state": "CLOSED",
"currency": "USD"
}PRE - Pre-market trading
REGULAR - Regular trading hours
AFTER - After-hours trading
POST - Post-market trading
CLOSED - Market closed
US Stocks: AAPL, TSLA, MSFT
Korean Stocks: 005930.KS (Samsung)
European Stocks: BMW.DE
And many more global exchanges
npm run devMIT
Get real-time stock price information for a given ticker symbol. Returns last price, timestamp, market state (PRE/REGULAR/AFTER/POST/CLOSED), and currency.
| Name | Required | Description | Default |
|---|---|---|---|
| ticker | Yes | Stock ticker symbol (e.g., AAPL, TSLA, 005930.KS) |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It discloses the return data (price, timestamp, market state, currency) but does not mention behavioral traits like rate limits, error handling, data freshness, or authentication needs. This is a significant gap for a tool with no annotation coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is appropriately sized and front-loaded, with two concise sentences that efficiently convey the tool's purpose and return values without any wasted words. Every sentence earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's low complexity (1 parameter, no output schema, no annotations), the description is complete enough for basic use. However, it lacks details on behavioral aspects like rate limits or error handling, which are important for a real-time data tool with no annotation coverage.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the schema already documents the single parameter ('ticker'). The description adds marginal value by specifying the resource ('stock price information') and implying the ticker's purpose, but does not provide additional syntax or format details beyond what the schema provides.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the specific action ('Get real-time stock price information') and resource ('for a given ticker symbol'), with no siblings to differentiate from. It precisely explains what the tool does without being vague or tautological.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage context (real-time stock price lookup) but does not explicitly state when to use this tool versus alternatives, nor does it provide exclusions or prerequisites. With no sibling tools, this is adequate but lacks explicit guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
v1.0.0get_stock_priceScored across 1 tool
With only one tool, there is no possibility of ambiguity or overlap between tools. The single tool 'get_stock_price' has a clearly distinct purpose that cannot be confused with any other tool in this set.
The naming pattern cannot be inconsistent when there is only one tool. The tool name 'get_stock_price' follows a clear verb_noun convention that would be consistent if more tools existed.
A single tool is generally too few for a server's purpose unless it's extremely narrow. For a stock price server, one might expect additional tools like historical data, multiple tickers, or market indicators, making this feel thin and limited in scope.
The server is severely incomplete for a stock price domain. While it provides real-time prices, it lacks essential operations such as historical price data, volume information, company details, or batch queries for multiple stocks, which are common in financial applications.
Unclaimed servers have limited discoverability.
If you are the server author, to access and configure the admin panel.
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