# How to connect Marketstack to Claude Cowork ```json { "title": "How to connect Marketstack to Claude Cowork", "toolkit": "Marketstack", "toolkit_slug": "marketstack", "framework": "Claude Cowork", "framework_slug": "claude-cowork", "url": "https://composio.dev/toolkits/marketstack/framework/claude-cowork", "markdown_url": "https://composio.dev/toolkits/marketstack/framework/claude-cowork.md", "updated_at": "2026-03-29T06:41:39.139Z" } ``` ## Introduction Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks. This guide walks you through the easiest and most secure way to connect your Marketstack account to Cowork via Composio Connect, enabling it to get the latest price for AAPL, show historical prices for TSLA last month, list top gainers on NYSE today, and more such actions on your behalf without compromising your account security. ## Also integrate Marketstack with - [OpenAI Agents SDK](https://composio.dev/toolkits/marketstack/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/marketstack/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/marketstack/framework/claude-code) - [Codex](https://composio.dev/toolkits/marketstack/framework/codex) - [OpenClaw](https://composio.dev/toolkits/marketstack/framework/openclaw) - [Hermes](https://composio.dev/toolkits/marketstack/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/marketstack/framework/cli) - [Google ADK](https://composio.dev/toolkits/marketstack/framework/google-adk) - [LangChain](https://composio.dev/toolkits/marketstack/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/marketstack/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/marketstack/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/marketstack/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/marketstack/framework/crew-ai) ## Connect Marketstack to Claude Cowork ### Connecting Marketstack to Claude Cowork 1. Open Customize In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top. 2. Add the Composio MCP server Click Add custom connector and paste in the Composio MCP server URL: ```bash https://connect.composio.dev/mcp ``` ## What is Claude Cowork? Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools. With Composio Connect, Cowork can securely access apps like Marketstack through MCP without you sharing account credentials directly with the agent. ## What is the Marketstack MCP server, and what's possible with it? The Marketstack MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Marketstack account. It provides structured and secure access so your agent can perform Marketstack operations on your behalf. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `MARKETSTACK_GET_DIVIDENDS` | Get Dividends | Tool to retrieve stock dividend data for one or more ticker symbols from Marketstack API. Use when you need historical dividend payment information for stocks, including dividend amounts and payment dates. | | `MARKETSTACK_GET_EOD` | Get End-of-Day Data | Tool to retrieve end-of-day (EOD) stock data for one or multiple ticker symbols. Returns OHLCV data (open, high, low, close, volume) along with adjusted prices, dividends, and split factors. Use when you need historical daily stock prices or market data analysis. | | `MARKETSTACK_GET_EXCHANGE` | Get Exchange Info | Tool to retrieve detailed information for a specific stock exchange by its MIC (Market Identifier Code). Use when you need comprehensive information about an exchange including its location, status, and operational details. | | `MARKETSTACK_GET_SPLITS` | Get Stock Splits | Tool to retrieve stock split data for one or more stock symbols from Marketstack. Use when you need historical split information including split factors and dates. | | `MARKETSTACK_GET_TICKER_EOD_DATA` | Get Ticker EOD Data | Tool to retrieve end-of-day stock price data for a specific ticker symbol. Use when you need historical daily price information including open, high, low, close, volume, and adjusted values. | | `MARKETSTACK_GET_TICKER_EOD_LATEST` | Get Ticker EOD Latest | Tool to retrieve end-of-day (EOD) stock data for the latest available date for a specific ticker. Use when you need the most recent trading day data for a stock symbol. | | `MARKETSTACK_GET_TICKER_INFO` | Get Ticker Info | Tool to retrieve detailed information about stock tickers including exchange, sector, and industry data. Use when you need comprehensive company information for a ticker symbol. | | `MARKETSTACK_LIST_CURRENCIES` | List Currencies | Tool to retrieve a list of all supported currencies from the Marketstack API. Use when you need to get information about available currencies for stock market data. | | `MARKETSTACK_LIST_STOCK_EXCHANGES` | List Stock Exchanges | Tool to retrieve information about supported stock exchanges. Use when you need to list or search for stock exchanges from the 2700+ exchanges available in Marketstack. | | `MARKETSTACK_LIST_TICKERS` | List Tickers | Tool to get a list of all supported stock tickers. Use when you need to obtain the full list of tickers supported by Marketstack or search for specific tickers. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Marketstack MCP server connects Claude Cowork to your Marketstack account through Composio. Once connected, Cowork can use the available Marketstack tools and triggers to complete tasks on your behalf. ## Complete Code None listed. ## How to build Marketstack MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/marketstack/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/marketstack/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/marketstack/framework/claude-code) - [Codex](https://composio.dev/toolkits/marketstack/framework/codex) - [OpenClaw](https://composio.dev/toolkits/marketstack/framework/openclaw) - [Hermes](https://composio.dev/toolkits/marketstack/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/marketstack/framework/cli) - [Google ADK](https://composio.dev/toolkits/marketstack/framework/google-adk) - [LangChain](https://composio.dev/toolkits/marketstack/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/marketstack/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/marketstack/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/marketstack/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/marketstack/framework/crew-ai) ## Related Toolkits - [Firecrawl](https://composio.dev/toolkits/firecrawl) - Firecrawl automates large-scale web crawling and data extraction. It helps organizations efficiently gather, index, and analyze content from online sources. - [Tavily](https://composio.dev/toolkits/tavily) - Tavily offers powerful search and data retrieval from documents, databases, and the web. It helps teams locate and filter information instantly, saving hours on research. - [Exa](https://composio.dev/toolkits/exa) - Exa is a data extraction and search platform for gathering and analyzing information from websites, APIs, or databases. It helps teams quickly surface insights and automate data-driven workflows. - [Serpapi](https://composio.dev/toolkits/serpapi) - SerpApi is a real-time API for structured search engine results. It lets you automate SERP data collection, parsing, and analysis for SEO and research. - [Peopledatalabs](https://composio.dev/toolkits/peopledatalabs) - Peopledatalabs delivers B2B data enrichment and identity resolution APIs. Supercharge your apps with accurate, up-to-date business and contact data. - [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. - [Snowflake](https://composio.dev/toolkits/snowflake) - Snowflake is a cloud data warehouse built for elastic scaling, secure data sharing, and fast SQL analytics across major clouds. - [Posthog](https://composio.dev/toolkits/posthog) - PostHog is an open-source analytics platform for tracking user interactions and product metrics. It helps teams refine features, analyze funnels, and reduce churn with actionable insights. - [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. - [Amplitude](https://composio.dev/toolkits/amplitude) - Amplitude is a digital analytics platform for product and behavioral data insights. It helps teams analyze user journeys and make data-driven decisions quickly. - [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. - [Bright Data MCP](https://composio.dev/toolkits/brightdata_mcp) - Bright Data MCP is an AI-powered web scraping and data collection platform. Instantly access public web data in real time with advanced scraping tools. - [Browseai](https://composio.dev/toolkits/browseai) - Browseai is a web automation and data extraction platform that turns any website into an API. It's perfect for monitoring websites and retrieving structured data without manual scraping. - [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. - [ClickHouse](https://composio.dev/toolkits/clickhouse) - ClickHouse is an open-source, column-oriented database for real-time analytics and big data processing using SQL. Its lightning-fast query performance makes it ideal for handling large datasets and delivering instant insights. - [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. - [Coinmarketcal](https://composio.dev/toolkits/coinmarketcal) - CoinMarketCal is a community-powered crypto calendar for upcoming events, announcements, and releases. It helps traders track market-moving developments and stay ahead in the crypto space. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Marketstack MCP? With a standalone Marketstack MCP server, the agents and LLMs can only access a fixed set of Marketstack tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Marketstack and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Claude Cowork? Yes, you can. Claude Cowork 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 Marketstack tools. ### Can I manage the permissions and scopes for Marketstack while using Tool Router? Yes, absolutely. You can configure which Marketstack 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 Marketstack data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) ยท [Composio docs](https://docs.composio.dev/llms.txt)