# How to integrate Polygon io MCP with Claude Code

```json
{
  "title": "How to integrate Polygon io MCP with Claude Code",
  "toolkit": "Polygon io",
  "toolkit_slug": "polygon_io",
  "framework": "Claude Code",
  "framework_slug": "claude-code",
  "url": "https://composio.dev/toolkits/polygon_io/framework/claude-code",
  "markdown_url": "https://composio.dev/toolkits/polygon_io/framework/claude-code.md",
  "updated_at": "2026-05-12T10:22:24.962Z"
}
```

## Introduction

Manage your Polygon io directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns.
You can do this in two different ways:
- Via [Composio Connect](https://dashboard.composio.dev/login?utm_source=toolkits&utm_medium=framework_template&utm_campaign=claude-code&utm_content=composio_connect&next=%2F~%2Forg%2Fconnect%2Fclients%2Fclaude-code) - Direct and easiest approach
- Via [Composio SDK](https://docs.composio.dev/docs?utm_source=toolkits&utm_medium=framework_template&utm_campaign=claude-code&utm_content=composio_sdk) - Programmatic approach with more control

## Also integrate Polygon io with

- [OpenAI Agents SDK](https://composio.dev/toolkits/polygon_io/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/polygon_io/framework/claude-agents-sdk)
- [Claude Cowork](https://composio.dev/toolkits/polygon_io/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/polygon_io/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/polygon_io/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/polygon_io/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/polygon_io/framework/cli)
- [Google ADK](https://composio.dev/toolkits/polygon_io/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/polygon_io/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/polygon_io/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/polygon_io/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/polygon_io/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/polygon_io/framework/crew-ai)

## TL;DR

- Only one MCP URL to connect multiple apps with Claude Code with zero auth hassles.
- Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
- Handling Large tool responses out of LLM context to minimize context rot.
- Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so LLMs aren't overwhelmed by tools you don't need.

## Connect Polygon io to Claude Code

### Connecting Polygon io to Claude Code using Composio
1. Add the Composio MCP to Claude

```bash
claude mcp add --scope user --transport http composio https://connect.composio.dev/mcp
```

## What is Claude Code?

Claude Code is Anthropic's command line developer tool that lets you use Claude directly inside your terminal. Instead of switching between your editor, browser, and chat, you can stay in your project folder and ask Claude to help you build, debug, refactor, and understand code right where you're working.
Key features include:
- Terminal-Native Experience: Work with Claude directly in your command line without switching contexts
- MCP Support: Built-in support for Model Context Protocol servers to extend Claude's capabilities
- Project Context: Claude understands your project structure and can read, write, and modify files
- Interactive Development: Ask questions, debug code, and get help in real-time while coding
- Multi-Platform: Works on macOS, Linux, WSL, and Windows

## What is the Polygon io MCP server, and what's possible with it?

The Polygon io MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Polygon io account. It provides structured and secure access to real-time and historical financial market data, so your agent can pull ticker lists, fetch stock summaries, analyze technical indicators, and surface news updates on your behalf.
- Comprehensive ticker discovery and lookup: Instantly retrieve detailed lists of supported stock, forex, crypto, and option tickers to power your trading dashboards or research tools.
- Daily summary and technical analysis: Ask your agent to fetch daily price summaries, calculate exponential moving averages, MACD, or RSI for any supported ticker and timeframe.
- Financial events and dividend insights: Pull up historical dividend distributions, keep tabs on scheduled market holidays, and plan trading activities around real exchange calendars.
- Up-to-date market status monitoring: Have your agent check real-time market open/close statuses and trading conditions across multiple exchanges and asset classes.
- Automated news aggregation for securities: Let your agent gather the latest news articles, sentiment analysis, and headlines for specific tickers, helping you stay informed with minimal effort.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `POLYGON_IO_GET_ALL_TICKERS` | Get All Tickers | Tool to retrieve a comprehensive list of supported ticker symbols across all asset classes. Use when you need to list all tickers with details like symbol, name, market, and status. |
| `POLYGON_IO_GET_CONDITION_CODES` | Get Condition Codes | Tool to retrieve a unified list of trade and quote condition codes and their definitions. Use when needing to decode condition identifiers after fetching market data. |
| `POLYGON_IO_GET_CRYPTO_EMA` | Get Crypto EMA | Tool to calculate Exponential Moving Average (EMA) technical indicator for a crypto ticker. Use when you need trend analysis or moving average calculations for cryptocurrency pairs. |
| `POLYGON_IO_GET_CRYPTO_MACD` | Get Crypto MACD | Tool to calculate Moving Average Convergence/Divergence (MACD) technical indicator for a crypto ticker. Use when you need momentum analysis, trend identification, or trading signal generation for cryptocurrency pairs. |
| `POLYGON_IO_GET_CRYPTO_OPEN_CLOSE` | Get Crypto Open/Close | Tool to get the open, close, high, low, and volume for a cryptocurrency pair on a specific date. Use when you need historical daily OHLC data for crypto pairs. |
| `POLYGON_IO_GET_CRYPTO_RSI` | Get Crypto RSI | Tool to calculate the Relative Strength Index (RSI) for a cryptocurrency ticker. Use when you need to analyze momentum or identify overbought/oversold conditions for crypto assets. |
| `POLYGON_IO_GET_CRYPTO_SMA` | Get Crypto SMA | Tool to calculate Simple Moving Average (SMA) technical indicator for a cryptocurrency ticker. Use when you need trend analysis, support/resistance levels, or trading signal generation for crypto pairs. |
| `POLYGON_IO_GET_DAILY_OPEN_CLOSE` | Get Daily Open/Close | Tool to get the daily open, close, after-hours, and pre-market prices for a stock on a specific date. Use when you need historical OHLC data for a specific trading day, including pre-market and after-hours information. |
| `POLYGON_IO_GET_DIVIDENDS` | Get Dividends | Tool to retrieve a historical record of cash dividend distributions for a given ticker. Use when analyzing dividend payments by date, amount, and frequency. |
| `POLYGON_IO_GET_ECONOMY_INFLATION2` | Get Economy Inflation Indicators (Enhanced) | Tool to retrieve key indicators of realized inflation including CPI and PCE price indexes with comprehensive date filtering. Use when analyzing inflation trends with specific date ranges, economic conditions, or historical price changes going back to 1947. |
| `POLYGON_IO_GET_EMA` | Get Exponential Moving Average | Tool to retrieve the Exponential Moving Average for a stock ticker. Use when you need EMA values across a specific timespan with optional underlying data. |
| `POLYGON_IO_GET_FILING` | Get SEC Filing | Tool to retrieve detailed information about a specific SEC filing by filing ID. Use when you need to access full filing details including accession number, filing type, dates, source URLs, and associated entities. |
| `POLYGON_IO_GET_FILING_FILE` | Get SEC Filing File | Tool to download a specific file from an SEC filing. Use when you need to access individual documents from a company's SEC filings, such as 10-Q, 10-K, or other submission files. Returns the raw file content (HTML, XML, XBRL, etc.). |
| `POLYGON_IO_GET_FOREX_EMA` | Get Forex EMA | Tool to calculate Exponential Moving Average (EMA) technical indicator for a forex pair. Use when you need trend analysis or moving average calculations for currency pairs. |
| `POLYGON_IO_GET_FOREX_MACD` | Get Forex MACD | Tool to calculate Moving Average Convergence/Divergence (MACD) technical indicator for a forex pair. Use when you need momentum analysis, trend identification, or trading signal generation for currency pairs. |
| `POLYGON_IO_GET_FOREX_REAL_TIME_CURRENCY_CONVERSION` | Get Forex Real-Time Currency Conversion | Tool to convert amounts between currency pairs using real-time forex rates. Use when you need to perform currency conversions with the latest market rates. |
| `POLYGON_IO_GET_FOREX_RSI` | Get Forex RSI | Tool to calculate the Relative Strength Index (RSI) technical indicator for a forex pair. Use when you need momentum analysis or want to identify overbought/oversold conditions for currency pairs. |
| `POLYGON_IO_GET_FOREX_SMA` | Get Forex SMA | Tool to calculate Simple Moving Average (SMA) technical indicator for a forex pair. Use when you need trend analysis or moving average calculations for currency pairs. |
| `POLYGON_IO_GET_FUTURES_QUOTES` | Get Futures Quotes | Tool to get real-time quote information for futures contracts with bid/ask prices, sizes, and timestamps. Use when you need to analyze current or historical quote data for futures trading decisions. |
| `POLYGON_IO_GET_GROUPED_DAILY` | Get Grouped Daily Market Summary | Tool to retrieve daily OHLCV data for the entire market for a given date. Use when you need grouped daily aggregate bars for all tickers in a specific market (stocks, crypto, or fx) and locale. |
| `POLYGON_IO_GET_HISTORIC_FOREX_TICKS` | Get Historic Forex Ticks | Tool to get historic ticks for a currency pair on a specific date. Use when you need historical forex tick-level data (ask/bid prices with timestamps) for a given day. |
| `POLYGON_IO_GET_INFLATION_EXPECTATIONS` | Get Inflation Expectations | Tool to retrieve inflation expectations data from the Federal Reserve, including market-based rates and Cleveland Fed model estimates. Use when analyzing inflation forecasts across different time horizons (1, 5, 10, and 30 years). |
| `POLYGON_IO_GET_IPO_DATA` | Get IPO Data | Tool to retrieve comprehensive information on Initial Public Offerings (IPOs), including upcoming and historical events. Use when analyzing IPO listing data by date range, ticker, or identifier. |
| `POLYGON_IO_GET_LABOR_MARKET` | Get Labor Market Data | Tool to retrieve labor market data including unemployment rate, labor force participation rate, average hourly earnings, and job openings. Use when analyzing employment trends, economic conditions, or workforce statistics. |
| `POLYGON_IO_GET_MACD` | Get MACD | Tool to retrieve the Moving Average Convergence/Divergence (MACD) for a stock ticker. Use when you need momentum analysis or signal generation over a specified timeframe. |
| `POLYGON_IO_GET_MARKET_HOLIDAYS` | Get Market Holidays | Tool to retrieve upcoming market holidays and their corresponding open/close times. Use when planning around market schedules before trading. |
| `POLYGON_IO_GET_MARKET_STATUS` | Get Market Status | Tool to retrieve the current trading status across major exchanges and currency markets. Use for real-time monitoring, scheduling, or UI updates. |
| `POLYGON_IO_GET_NEWS` | Get News | Tool to retrieve the most recent news articles for a specified ticker. Use when you need summaries, source details, and sentiment analysis for market news. |
| `POLYGON_IO_GET_OPTIONS_CONTRACT_OVERVIEW` | Get Options Contract Overview | Tool to retrieve comprehensive details about a specific options contract including contract type, exercise style, expiration date, strike price, and underlying ticker. Use when you need specifications for options contract analysis or strategy development. |
| `POLYGON_IO_GET_OPTIONS_EMA` | Get Options EMA | Tool to calculate Exponential Moving Average (EMA) technical indicator for an options ticker. Use when you need trend analysis or moving average calculations for options contracts. |
| `POLYGON_IO_GET_OPTIONS_MACD` | Get Options MACD | Tool to calculate Moving Average Convergence/Divergence (MACD) technical indicator for an options ticker. Use when you need momentum analysis, trend identification, or trading signal generation for options contracts. |
| `POLYGON_IO_GET_OPTIONS_RSI` | Get Options RSI | Tool to calculate Relative Strength Index (RSI) technical indicator for an options ticker. Use when you need momentum analysis or want to identify overbought/oversold conditions for options contracts. |
| `POLYGON_IO_GET_OPTIONS_SMA` | Get Options SMA | Tool to calculate Simple Moving Average (SMA) technical indicator for an options ticker. Use when you need trend analysis or smoothed price data for options contracts. |
| `POLYGON_IO_GET_RELATED_COMPANIES` | Get Related Companies | Tool to retrieve tickers related to a given ticker based on similar business or market characteristics. Use when you need to find companies similar to a specific ticker. |
| `POLYGON_IO_GET_RSI` | Get RSI | Tool to retrieve the Relative Strength Index (RSI) for a stock ticker. Use after confirming ticker symbol and timespan to analyze momentum over a period. |
| `POLYGON_IO_GET_SMA` | Get Simple Moving Average | Tool to retrieve the Simple Moving Average (SMA) for any ticker (stocks, forex, crypto). Use when you need SMA values over a specified timespan with optional underlying data. |
| `POLYGON_IO_GET_SPLITS` | Get Splits | Tool to retrieve historical stock split events for a given ticker. Use after identifying the ticker to fetch split history including ratio, ex-date, and record dates. |
| `POLYGON_IO_GET_STOCKS_CUSTOM_BARS` | Get Stocks Custom Bars | Tool to retrieve aggregated historical OHLC and volume data for a stock over custom date ranges with configurable time windows. Use when you need aggregate bars for stock price analysis, backtesting, or charting. |
| `POLYGON_IO_GET_STOCKS_DAILY_MARKET_SUMMARY` | Get Stocks Daily Market Summary | Tool to retrieve daily OHLC, volume, and VWAP data for all U.S. stocks on a specified trading date. Use when you need to get grouped daily aggregate bars for all US stocks for a specific date. |
| `POLYGON_IO_GET_STOCKS_FILINGS_RISK_FACTORS` | Get Stocks Filings Risk Factors | Tool to retrieve risk factors identified in companies' 10K filings. Use when analyzing company risks, regulatory disclosures, or compliance requirements. |
| `POLYGON_IO_GET_STOCKS_FILINGS_SECTIONS` | Get Stocks Filings Sections | Tool to retrieve raw text content from specific sections of SEC filings (10-K, 10-Q, etc.). Use when you need detailed textual information from SEC documents like business descriptions or risk factors. |
| `POLYGON_IO_GET_STOCKS_FREE_FLOAT` | Get Stocks Free Float | Tool to retrieve free float data for US-listed securities showing the most recent available number of shares available for public trading and the percentage of total shares outstanding. Use when analyzing stock liquidity, ownership structure, or available trading shares. |
| `POLYGON_IO_GET_STOCKS_FULL_MARKET_SNAPSHOT` | Get Stocks Full Market Snapshot | Tool to retrieve a comprehensive snapshot of the entire U.S. stock market covering 10,000+ actively traded tickers. Use when you need current market-wide data including pricing, volume, and trade activity. Data is cleared daily at 3:30 AM EST and repopulates as exchanges report new data starting around 4:00 AM EST. |
| `POLYGON_IO_GET_STOCKS_INCOME_STATEMENTS` | Get Stocks Income Statements | Tool to retrieve comprehensive income statement data including revenue, expenses, and net income from company SEC filings. Use when analyzing profitability, revenue trends, or operational performance. |
| `POLYGON_IO_GET_STOCKS_PREVIOUS_DAY_BAR` | Get Stocks Previous Day Bar | Tool to retrieve the previous trading day's open, high, low, close (OHLC), and volume data for a stock ticker. Use when you need the most recent completed trading day's aggregate data. |
| `POLYGON_IO_GET_STOCKS_RISK_FACTOR_TAXONOMIES` | Get Stocks Risk Factor Taxonomies | Tool to retrieve the complete list of risk factor classifications used in the risk factors endpoint. Use when you need to understand available risk categories or filter by specific risk classifications. |
| `POLYGON_IO_GET_STOCKS_V1_DIVIDENDS` | Get Stocks V1 Dividends | Tool to retrieve historical dividend payment records for US stocks with split-adjusted amounts and historical adjustment factors. Use when analyzing dividend history with price normalization data. |
| `POLYGON_IO_GET_STOCKS_V1_SHORT_INTEREST` | Get Short Interest Data | Tool to retrieve comprehensive FINRA short interest data that tracks the short selling metrics for securities on a specific settlement date. Use when analyzing short positions, days to cover, and average daily volume for stocks. |
| `POLYGON_IO_GET_STOCKS_V1_SHORT_VOLUME` | Get Short Volume Data | Tool to retrieve short selling volume data for stock tickers. Use when analyzing short sale activity including total trading volume, short sale details, and breakdown by different trading platforms. |
| `POLYGON_IO_GET_STOCKS_V1_SPLITS` | Get Stocks V1 Splits | Tool to retrieve historical stock split and reverse split events for US equities with historical adjustment factors for price normalization. Use when analyzing stock split history including forward splits, reverse splits, and stock dividends. |
| `POLYGON_IO_GET_TICKER_EVENTS` | Get Ticker Events | Tool to retrieve timeline of ticker change events such as symbol renaming or rebranding. Use when tracking ticker history to maintain continuity in records and analyses. This is an experimental endpoint. |
| `POLYGON_IO_GET_TICKER_OVERVIEW` | Get Ticker Overview | Tool to retrieve comprehensive details for a single ticker, including identifiers, industry, and branding assets. Use after confirming the exact ticker symbol. |
| `POLYGON_IO_GET_TICKER_TYPES` | Get Ticker Types | Tool to retrieve a list of all ticker types supported by Polygon.io. Use when you need to enumerate valid ticker types for filtering or validation. |
| `POLYGON_IO_GET_TREASURY_YIELDS` | Get Treasury Yields | Tool to retrieve daily market yields for US Treasury securities across standard maturities (1-month to 30-year). Use when analyzing interest rate trends, yield curve analysis, or economic indicators. |
| `POLYGON_IO_LIST_EXCHANGES` | List Exchanges | Tool to retrieve all exchanges supported by Polygon.io with details about asset class and locale. Use when you need to list available exchanges for filtering market data or understanding trading venues. |
| `POLYGON_IO_LIST_FILING_FILES` | List Filing Files | Tool to retrieve files associated with an SEC filing by filing ID. Use when you need to list all documents, exhibits, and data files included in a specific SEC filing. |
| `POLYGON_IO_LIST_FILINGS` | List SEC Filings | Tool to retrieve SEC filings from the Polygon.io reference data API. Use when you need to search for 10-K, 10-Q, and other SEC filings by date, company, or filing type. |
| `POLYGON_IO_LIST_OPTIONS_CONTRACTS` | List Options Contracts | Tool to list and filter options contracts by underlying ticker, type, expiration, strike, and more. Use when you need to enumerate an options chain or find specific contracts matching criteria. |
| `POLYGON_IO_POLYGON_LAST_QUOTE_FOR_A_SYMBOL` | Last Quote for a Symbol | Tool to retrieve the last quote tick for a given stock symbol. Use when you need the most recent bid/ask prices, sizes, and exchange information for a stock. |
| `POLYGON_IO_POLYGON_LAST_TRADE_FOR_A_CURRENCY_PAIR` | Last Trade for a Currency Pair | Tool to retrieve the last trade tick for a currency pair in the forex market. Use when you need the most recent trade price, exchange, and timestamp for a specific currency pair. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Polygon io MCP server is an implementation of the Model Context Protocol that connects Claude Code (and other AI assistants like Claude and Cursor) directly to your Polygon io account. It provides structured and secure access so Claude can perform Polygon io operations on your behalf.
With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster.

## Step-by-step Guide

### 1. Prerequisites

Before starting, make sure you have:
- Claude Pro, Max, or API billing enabled Anthropic account
- Composio API Key
- A Polygon io account
- Basic knowledge of Python or TypeScript

### 1. Install Claude Code

To install Claude Code, use one of the following methods based on your operating system:
```bash
# macOS, Linux, WSL
curl -fsSL https://claude.ai/install.sh | bash

# Windows PowerShell
irm https://claude.ai/install.ps1 | iex

# Windows CMD
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd
```

### 2. Set up Claude Code

Open a terminal, go to your project folder, and start Claude Code:
- Claude Code will open in your terminal
- Follow the prompts to sign in with your Anthropic account
- Complete the authentication flow
- Once authenticated, you can start using Claude Code
```bash
cd your-project-folder
claude
```

### 3. Set up environment variables

Create a .env file in your project root with the following variables:
- COMPOSIO_API_KEY authenticates with Composio (get it from [Composio dashboard](https://dashboard.composio.dev/login?utm_source=toolkits&utm_medium=framework_template&utm_campaign=claude-code&utm_content=api_key&next=%2F~%2Forg%2Fconnect%2Fclients%2Fclaude-code))
- USER_ID identifies the user for session management (use any unique identifier)
```bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here
```

### 4. Install Composio library

No description provided.
```python
pip install composio-core python-dotenv
```

```typescript
npm install @composio/core dotenv
```

### 5. Generate Composio MCP URL

No description provided.
```python
import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
USER_ID = os.getenv("USER_ID")

composio_client = Composio(api_key=COMPOSIO_API_KEY)

composio_session = composio_client.create(
    user_id=USER_ID,
    toolkits=["polygon_io"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url

print(f"MCP URL: {COMPOSIO_MCP_URL}")
print(f"\nUse this command to add to Claude Code:")
print(f'claude mcp add --transport http polygon_io-composio "{COMPOSIO_MCP_URL}" --headers "X-API-Key:{COMPOSIO_API_KEY}"')
```

```typescript
import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['polygon_io'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http polygon_io-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);
```

### 6. Run the script and copy the MCP URL

No description provided.
```python
python generate_mcp_url.py
```

```typescript
node --loader ts-node/esm generate_mcp_url.ts
# or if using tsx
tsx generate_mcp_url.ts
```

### 7. Add Polygon io MCP to Claude Code

In your terminal, add the MCP server using the command from the previous step. The command format is:
- claude mcp add registers a new MCP server with Claude Code
- --transport http specifies that this is an HTTP-based MCP server
- The server name (polygon_io-composio) is how you'll reference it
- The URL points to your Composio Tool Router session
- --headers includes your Composio API key for authentication
After running the command, close the current Claude Code session and start a new one for the changes to take effect.
```bash
claude mcp add --transport http polygon_io-composio "YOUR_MCP_URL_HERE" --headers "X-API-Key:YOUR_COMPOSIO_API_KEY"

# Then restart Claude Code
exit
claude
```

### 8. Verify the installation

Check that your Polygon io MCP server is properly configured.
- This command lists all MCP servers registered with Claude Code
- You should see your polygon_io-composio entry in the list
- This confirms that Claude Code can now access Polygon io tools
If everything is wired up, you should see your polygon_io-composio entry listed:
```bash
claude mcp list
```

### 9. Authenticate Polygon io

The first time you try to use Polygon io tools, you'll be prompted to authenticate.
- Claude Code will detect that you need to authenticate with Polygon io
- It will show you an authentication link
- Open the link in your browser (or copy/paste it)
- Complete the Polygon io authorization flow
- Return to the terminal and start using Polygon io through Claude Code
Once authenticated, you can ask Claude Code to perform Polygon io operations in natural language. For example:
- "Get daily summary for AAPL stock"
- "Retrieve latest news on TSLA ticker"
- "Check if NYSE market is open now"

## Complete Code

```python
import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
USER_ID = os.getenv("USER_ID")

composio_client = Composio(api_key=COMPOSIO_API_KEY)

composio_session = composio_client.create(
    user_id=USER_ID,
    toolkits=["polygon_io"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url

print(f"MCP URL: {COMPOSIO_MCP_URL}")
print(f"\nUse this command to add to Claude Code:")
print(f'claude mcp add --transport http polygon_io-composio "{COMPOSIO_MCP_URL}" --headers "X-API-Key:{COMPOSIO_API_KEY}"')
```

```typescript
import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['polygon_io'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http polygon_io-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);
```

## Conclusion

You've successfully integrated Polygon io with Claude Code using Composio's MCP server. Now you can interact with Polygon io directly from your terminal using natural language commands.
Key features of this setup:
- Terminal-native experience without switching contexts
- Natural language commands for Polygon io operations
- Secure authentication through Composio's managed MCP
- Tool Router for dynamic tool discovery and execution
Next steps:
- Try asking Claude Code to perform various Polygon io operations
- Add more toolkits to your Tool Router session for multi-app workflows
- Integrate this setup into your development workflow for increased productivity
You can extend this by adding more toolkits, implementing custom workflows, or building automation scripts that leverage Claude Code's capabilities.

## How to build Polygon io MCP Agent with another framework

- [OpenAI Agents SDK](https://composio.dev/toolkits/polygon_io/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/polygon_io/framework/claude-agents-sdk)
- [Claude Cowork](https://composio.dev/toolkits/polygon_io/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/polygon_io/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/polygon_io/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/polygon_io/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/polygon_io/framework/cli)
- [Google ADK](https://composio.dev/toolkits/polygon_io/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/polygon_io/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/polygon_io/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/polygon_io/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/polygon_io/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/polygon_io/framework/crew-ai)

## Related Toolkits

- [Stripe](https://composio.dev/toolkits/stripe) - Stripe is a global online payments platform offering APIs for managing payments, customers, and subscriptions. Trusted by businesses for secure, efficient, and scalable payment processing worldwide.
- [Alpha vantage](https://composio.dev/toolkits/alpha_vantage) - Alpha Vantage is a financial data platform offering real-time and historical stock market APIs. Get instant, reliable access to equities, forex, and technical analysis data for smarter trading decisions.
- [Altoviz](https://composio.dev/toolkits/altoviz) - Altoviz is a cloud-based billing and invoicing platform for businesses. It streamlines online payments, expense tracking, and customizable invoice management.
- [Benzinga](https://composio.dev/toolkits/benzinga) - Benzinga provides real-time financial news and data APIs for market coverage. It helps you track breaking news and actionable market insights instantly.
- [Brex](https://composio.dev/toolkits/brex) - Brex provides corporate credit cards and spend management tailored for startups and tech businesses. It helps optimize company cash flow, streamline accounting, and accelerate business growth.
- [Chaser](https://composio.dev/toolkits/chaser) - Chaser is accounts receivable automation software that sends invoice reminders and helps businesses get paid faster. It streamlines the collections process to save time and improve cash flow.
- [Clientary](https://composio.dev/toolkits/clientary) - Clientary is a platform for managing clients, invoices, projects, proposals, and more. It streamlines client work and saves you serious admin time.
- [Coinbase](https://composio.dev/toolkits/coinbase) - Coinbase is a platform for buying, selling, and storing cryptocurrency. It makes exchanging and managing crypto simple and secure for everyone.
- [Coinranking](https://composio.dev/toolkits/coinranking) - Coinranking is a comprehensive cryptocurrency market data platform offering access to real-time coin prices, market caps, and historical data. Get accurate, up-to-date stats for thousands of digital assets in one place.
- [Coupa](https://composio.dev/toolkits/coupa) - Coupa is a business spend management platform for procurement, invoicing, and expenses. It helps organizations streamline purchasing, control costs, and gain complete visibility over financial operations.
- [CurrencyScoop](https://composio.dev/toolkits/currencyscoop) - CurrencyScoop is a developer-friendly API for real-time and historical currency exchange rates. Easily access fiat and crypto data for smart, up-to-date financial applications.
- [Daffy](https://composio.dev/toolkits/daffy) - Daffy is a modern charitable giving platform with a donor-advised fund. Easily set aside funds, grow them tax-free, and donate to over 1.7 million U.S. charities.
- [Eagle doc](https://composio.dev/toolkits/eagle_doc) - Eagle doc is an AI-powered OCR API for invoices and receipts. It delivers fast, reliable, and accurate document data extraction for seamless automation.
- [Elorus](https://composio.dev/toolkits/elorus) - Elorus is an online invoicing and time-tracking software for freelancers and small businesses. Easily manage finances, bill clients, and track work in one place.
- [Eodhd apis](https://composio.dev/toolkits/eodhd_apis) - Eodhd apis delivers comprehensive financial data, including live and historical stock prices, via robust APIs. Easily access reliable, up-to-date market insights to power your apps, dashboards, and analytics.
- [Fidel api](https://composio.dev/toolkits/fidel_api) - Fidel api is a secure platform for linking payment cards to web and mobile apps. It enables real-time card transaction monitoring and event-based automation for businesses.
- [Finage](https://composio.dev/toolkits/finage) - Finage is a secure API platform delivering real-time and historical financial data for stocks, forex, crypto, indices, and commodities. It empowers developers and businesses to access, analyze, and act on market data instantly.
- [Finmei](https://composio.dev/toolkits/finmei) - Finmei is an invoicing tool that simplifies billing, invoice management, and expense tracking. Ideal for automating and organizing your business finances in one place.
- [Fixer](https://composio.dev/toolkits/fixer) - Fixer is a currency data API offering real-time and historical exchange rates for 170 currencies. Instantly access accurate, up-to-date forex data for your applications and workflows.
- [Fixer io](https://composio.dev/toolkits/fixer_io) - Fixer.io is a lightweight API for real-time and historical foreign exchange rates. It makes global currency conversion fast, accurate, and hassle-free.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Polygon io MCP?

With a standalone Polygon io MCP server, the agents and LLMs can only access a fixed set of Polygon io tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Polygon io and many other apps based on the task at hand, all through a single MCP endpoint.

### Can I use Tool Router MCP with Claude Code?

Yes, you can. Claude Code fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Polygon io tools.

### Can I manage the permissions and scopes for Polygon io while using Tool Router?

Yes, absolutely. You can configure which Polygon io scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

### How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Polygon io data and credentials are handled as safely as possible.

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