Marketstack Integration for AI Agents

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Marketstack MCP or direct API to fetch real-time prices, look up historical quotes, analyze stock performance, and discover ticker information through natural language.
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Enter a prompt below to test the integration in our Tool Router playground. You'll be redirected to sign in and try it live.

Supported Tools

Tools
Get DividendsTool to retrieve stock dividend data for one or more ticker symbols from Marketstack API.
Get End-of-Day DataTool to retrieve end-of-day (EOD) stock data for one or multiple ticker symbols.
Get Exchange InfoTool to retrieve detailed information for a specific stock exchange by its MIC (Market Identifier Code).
Get Stock SplitsTool to retrieve stock split data for one or more stock symbols from Marketstack.
Get Ticker EOD DataTool to retrieve end-of-day stock price data for a specific ticker symbol.
Get Ticker EOD LatestTool to retrieve end-of-day (EOD) stock data for the latest available date for a specific ticker.
Get Ticker InfoTool to retrieve detailed information about stock tickers including exchange, sector, and industry data.
List CurrenciesTool to retrieve a list of all supported currencies from the Marketstack API.
List Stock ExchangesTool to retrieve information about supported stock exchanges.
List TickersTool to get a list of all supported stock tickers.
Python
TypeScript

Install Composio

python
pip install composio claude-agent-sdk
Install the Composio SDK for Python or TypeScript

Initialize Client and Create Tool Router Session

python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url
Import and initialize the Composio client, then create a Tool Router session for Marketstack

Connect to AI Agent

python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to Marketstack tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Get the historical closing prices for TSLA in the last month.')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
Use the MCP server with your AI agent (Anthropic Claude or Mastra)

Why Use Composio?

AI Native Marketstack Integration

  • Supports both Marketstack MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for reading, writing, and querying your Marketstack data

Managed Auth

  • Built-in OAuth handling with automatic token refresh and rotation
  • Central place to manage, scope, and revoke Marketstack access
  • Per user and per environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Marketstack
  • Scoped, least privilege access to Marketstack resources
  • Full audit trail of agent actions to support review and compliance

Use Marketstack with any AI Agent Framework

Choose a Framework you want to connect Marketstack with

Frequently Asked Questions

Do I need my own developer credentials to use Marketstack with Composio?

Yes, Marketstack requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. Learn more.

What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Used by agents from

Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

Never worry about agent reliability

We handle tool reliability, observability, and security so you never have to second-guess an agent action.

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