Polygon.io

Live

Stock market data: quotes, OHLCV aggregates, ticker search, company details, splits, dividends, financials, and market holidays.

What is Polygon.io?

Access Polygon.io for stock market data including previous-day close quotes, OHLCV aggregate bars over custom date ranges and timespans, single-day open/close, ticker search, detailed company information (SIC code, market cap, employees), stock split and dividend history, market holidays, related companies, and standardized financial data (income statement, balance sheet, cash flow). Free tier provides end-of-day data at 5 calls/min.

Available Tools

getStockQuote
Get the previous trading day's close for a stock ticker. Returns open, high, low, close, volume, VWAP.
getAggregates
Get OHLCV aggregate bars for a stock over a date range with custom timespan and multiplier.
getDailyBar
Get OHLCV data for a single trading day.
searchTickers
Search for stock tickers by name or symbol.
getTickerDetails
Get detailed company information — SIC code, market cap, description, homepage, employees.
getStockSplits
Get stock split history for a ticker.
getDividends
Get dividend history for a ticker.
getMarketHolidays
Get upcoming market holidays and early closes.
getRelatedCompanies
Get related companies for a ticker (peers, competitors, sector mates).
getFinancials
Get standardized financial data — income statement, balance sheet, and cash flow.

Requirements

API key required
Sign up for free at https://polygon.io/docs. Enter on the MCP Servers page.

Quick Setup Guide

Follow these steps to connect your AI agents to this connector

Navigate to /mcp, find Polygon.io, and enter your API key.

Use getStockQuote for latest prices, getAggregates for historical bars, or getFinancials for financial statements.

Connect to Your AI Assistant

Choose your AI assistant below for specific setup instructions

Follow these steps to connect Polygon.io to Claude:

Step 1: Open Claude Settings

Launch Claude → Click the profile button (bottom left) → Navigate to Settings

Step 2: Access Connectors

Scroll down to the Connectors tab → Navigate to the bottom → Click “Add Custom Connector”

Step 3: Name Your Connector

Enter any name you'd like for this connector

Step 4: Get the Connector URL

Step 5: Add the Connector

Paste the URL in the “Remote MCP Server URL” text box → Click Add

Step 6: Start Using

Your connector is now ready to use in Claude

Follow these steps to connect Polygon.io to ChatGPT:

Step 1: Enable Developer Mode

Go to Settings → Connectors → Advanced → Enable Developer mode

Step 2: Create New Connector

Go back to Connectors page → Click “Create” (top right)

Step 3: Name Your Connector

Enter any name you'd like for this connector (descriptions are optional)

Step 4: Get the Connector URL

Step 5: Add the URL

Paste the URL in the “MCP Server URL” text box

Step 6: Set Authentication

Click the authentication dropdown → Select “No authentication” (PatchOps handles authentication internally)

Step 7: Create the Connector

Click “I understand and want to continue” checkbox → Press Create

Step 8: Using the Connector

Start a new chat → Click the + button (left of text box) → Open dropdown → Hover over three dots labeled “More” → Select your connector

Instructions for connecting Polygon.io to GitHub Copilot:

Coming Soon

Detailed setup instructions for GitHub Copilot will be added here.

For other MCP-compatible platforms:

Step 1: Get the Connector URL

Step 2: Add to Configuration

Add this configuration to your MCP settings file. Replace the URL with your specific connector URL from the /mcp page:

"Polygon.io-MCP": {
  "url": "https://patchops.ai/api/mcp/...",
  "type": "http"
}

Example Configuration

Here’s an example using PatchOps MCP:

"PatchOps-MCP": {
  "url": "https://patchops.ai/api/mcp/...",
  "type": "http"
}