LangChainFramework

Polygon.io MCP Server

Bring Stock Market
to LangChain

Name: Polygon.io MCP Server
Price: 29 USD
Availability: InStock
Rating: 5.0 (1 reviews)
Author: Vinkius

Learn how to connect Polygon.io to LangChain and start using 6 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.

GDPR Free for Subscribers

Get AggregatesGet CompanyList DividendsList QuotesList TickersList Trades

Unlock for AI Agents

Ask AI about this MCP Server ChatGPT Claude Perplexity

Compatible with every major AI agent and IDE

Claude

ChatGPT

Cursor

Gemini

Windsurf

VS Code

JetBrains

Vercel

+ other MCP clients

What is the Polygon.io MCP Server?

Connect your Polygon.io account to any AI agent to retrieve institutional-grade financial data through natural language. Monitor market trends, analyze historical performance, and inspect company fundamentals without leaving your chat interface.

What you can do

Market Aggregates — Fetch OHLCV (Open, High, Low, Close, Volume) bars for any ticker over custom timeframes (minute, hour, day)
Real-Time & Historical Trades — Access tick-by-tick trade data to analyze precise market movements and execution prices
Company Fundamentals — Retrieve detailed metadata for stock tickers, including industry classifications and company descriptions
Dividend Tracking — List historical cash dividend distributions, frequencies, and ex-dividend dates for specific assets
Ticker Discovery — Query the full list of supported tickers and financial instruments available on the platform

How it works

Subscribe to this server
Enter your Polygon.io API Key
Start querying financial markets from Claude, Cursor, or any MCP-compatible client

Who is this for?

Financial Analysts — quickly pull historical aggregates and dividend data for modeling and reporting
Traders & Quants — inspect tick-by-tick trades and quotes (NBBO) to validate strategies directly from the terminal
Fintech Developers — verify ticker metadata and market connectivity while building financial applications

Built-in capabilities (6)

get_aggregates

Get aggregate bars for a stock

get_company

Get company details for a ticker

list_dividends

List historical dividends

list_quotes

Get tick-by-tick quotes (NBBO)

list_tickers

io. Query all supported tickers

list_trades

Get tick-by-tick trades

Why LangChain?

LangChain's ecosystem of 500+ components combines seamlessly with Polygon.io through native MCP adapters. Connect 6 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.

—
The largest ecosystem of integrations, chains, and agents. combine Polygon.io MCP tools with 500+ LangChain components
—
Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
—
LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
—
Memory and conversation persistence let agents maintain context across Polygon.io queries for multi-turn workflows

See it in action

Polygon.io in LangChain

AI Agent→Vinkius

High Security·Kill Switch·Plug and Play

Why Vinkius

Polygon.io and 4,000+ other MCP servers. One platform. One governance layer.

Teams that connect Polygon.io to LangChain through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.

4,000+MCP Servers ready

<40msCold start

60%Token savings

	Raw MCP	Vinkius
Server catalog	Find and host yourself	4,000+ managed
Infrastructure	Self-hosted	Sandboxed V8 isolates
Credential handling	Plaintext in config	Vault + runtime injection
Data loss prevention	None	Configurable DLP policies
Kill switch	None	Global instant shutdown
Financial circuit breakers	None	Per-server limits + alerts
Audit trail	None	Ed25519 signed logs
SIEM log streaming	None	Splunk, Datadog, Webhook
Honeytokens	None	Canary alerts on leak
Custom domains	Not applicable	DNS challenge verified
GDPR compliance	Manual effort	Automated purge + export

Unlock for AI Agents View step-by-step setup guide for LangChain →

Enterprise Security

Why teams choose Vinkius for Polygon.io in LangChain

The Polygon.io MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 6 tools execute in hardened sandboxes optimized for native MCP execution.

Your AI agents in LangChain only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.

Unlock for AI Agents View full Polygon.io details →

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

The Vinkius Advantage

How Vinkius secures
Polygon.io for LangChain

Every tool call from LangChain to the Polygon.io MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.

< 40msCold start

Ed25519Signed audit chain

60%Token savings

FAQ

Frequently asked questions

Can I get historical price data for a specific stock over a date range?

Yes. Use the get_aggregates tool by providing the ticker, multiplier, timespan (e.g., 'day'), and the 'from' and 'to' dates. The agent will return the OHLCV bars for that period.

How do I find the description and industry of a specific company?

Simply use the get_company tool with the stock ticker (e.g., 'AAPL'). It will retrieve the official company metadata, including its business description and industry classification.

Is it possible to see the most recent trades for a ticker?

Yes! The list_trades tool allows you to fetch tick-by-tick trade data for a specific ticker, showing execution prices and sizes as they happen in the market.

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.

Can I trace MCP tool calls in LangSmith?

Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

Explore More MCP Servers

View all →

4D

6 tools

Standard REST API for 4D Database — explore catalogs, query DataClasses, and manage entities via AI.

Telegram Bot

13 tools

Control Telegram bots programmatically — send messages, photos, documents, and manage chats via AI.

WordPress Media Uploader

1 tools

This MCP does exactly one thing: it downloads images from a URL and uploads them directly to your WordPress Media Library. Incredible for giving Claude the ability to generate and deploy blog cover images instantly.