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Connect to everything your agents need, without writing the infrastructure to get there.

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Enterprise-grade controls to ensure your agent always meets security & compliance standards.

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Maximise agent efficiency – faster responses, increased accuracy, fewer tokens used.

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Live 62 Actions

Twelve Data MCP Server
for AI Agents

Connect your AI agent to StackOne's Twelve Data MCP server and give it 62 MCP tools out of the box. Auth, tool execution, and security all managed.

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Twelve Data MCP Server
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Coverage

62 Agent Actions

Create, read, update, and delete across Twelve Data — and extend your agent's capabilities with custom actions.

MCP Actions → Build Actions →

Authentication

Agent Tool Authentication

Per-user OAuth in one call. Your Twelve Data MCP server gets session-scoped tokens with zero credentials stored on your infra.

Agent Auth →

Security

Agent Protection

Every Twelve Data tool response scanned for prompt injection in milliseconds — 88.7% accuracy, all running on CPU.

Prompt Injection Defense →

Performance

Max Agent Context. Min Cost.

Free up to 96% of your agent's context window to enhance reasoning and reduce cost, on every Twelve Data call.

Tools Discovery →

What is the Twelve Data MCP Server?

A Twelve Data MCP server lets AI agents read and write Twelve Data data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Twelve Data MCP server ships with 62 pre-built actions, fully extensible via the Connector Builder — plus managed authentication, prompt injection defense, observability, and agent execution runtime. Connect it from MCP clients like Claude Desktop, Claude Code, Cursor, Goose, and VS Code, or from agent frameworks like OpenAI Agents SDK, LangChain, and Vercel AI SDK.

All Twelve Data MCP Tools

Every action from Twelve Data's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.

Other (62)

  • Get Analyst Ratings US Equities

    Get Analyst Ratings US Equities for an instrument

  • Get Earnings Estimate

    Get Earnings Estimate for an instrument

  • Get Growth Estimates

    Get Growth Estimates for an instrument

  • Get Price Target

    Get Price Target for an instrument

  • Get Recommendations

    Get Recommendations for an instrument

  • List Dividends Calendar

    List Dividends Calendar entries

  • List Earnings Calendar

    List Earnings Calendar entries

  • List IPO Calendar

    List IPO Calendar entries

  • List Splits Calendar

    List Splits Calendar entries

  • Get Balance Sheet

    Get the Balance Sheet for an instrument

  • Get Cash Flow

    Get the Cash Flow for an instrument

  • Get Dividends

    Get the Dividends for an instrument

  • Get Earnings

    Get the Earnings for an instrument

  • Get Income Statement

    Get the Income Statement for an instrument

  • Get Market Capitalization

    Get the Market Capitalization for an instrument

  • Get Profile

    Get the Profile for an instrument

  • Get Splits

    Get the Splits for an instrument

  • Get Statistics

    Get the Statistics for an instrument

  • List Technical Indicators

    List all technical indicators supported by Twelve Data with their parameters and output values

  • Get RSI

    Get Relative Strength Index values for an instrument at a chosen interval

  • Get MACD

    Get Moving Average Convergence Divergence values for an instrument at a chosen interval

  • Get SMA

    Get Simple Moving Average values for an instrument at a chosen interval

  • Get EMA

    Get Exponential Moving Average values for an instrument at a chosen interval

  • Get Bollinger Bands

    Get Bollinger Bands values for an instrument at a chosen interval

  • Get Average Directional Index

    Get Average Directional Index values for an instrument at a chosen interval

  • Get Aroon Indicator

    Get Aroon Indicator values for an instrument at a chosen interval

  • Get Average True Range

    Get Average True Range values for an instrument at a chosen interval

  • Get Commodity Channel Index

    Get Commodity Channel Index values for an instrument at a chosen interval

  • Get Ichimoku Cloud

    Get Ichimoku Cloud values for an instrument at a chosen interval

  • Get Money Flow Index

    Get Money Flow Index values for an instrument at a chosen interval

  • Get On Balance Volume

    Get On Balance Volume values for an instrument at a chosen interval

  • Get Parabolic Stop And Reverse

    Get Parabolic Stop And Reverse values for an instrument at a chosen interval

  • Get Stochastic Oscillator

    Get Stochastic Oscillator values for an instrument at a chosen interval

  • Get Supertrend

    Get Supertrend values for an instrument at a chosen interval

  • Get Volume Weighted Average Price

    Get Volume Weighted Average Price values for an instrument at a chosen interval

  • Get Williams %R

    Get Williams %R values for an instrument at a chosen interval

  • Get Price

    Get the latest price for a stock, forex pair, or cryptocurrency

  • Get Quote

    Get the latest quote with OHLC, volume, and 52-week range for an instrument

  • Get Time Series

    Get historical OHLCV bars for an instrument at a chosen interval

  • Get End Of Day Price

    Get the latest end-of-day closing price for an instrument

  • Get Exchange Rate

    Get the real-time exchange rate for a currency pair

  • Search Symbols

    Search instruments by ticker or name across all asset classes

  • List Stocks

    List available stock symbols, filterable by symbol, exchange, or country

  • List Forex Pairs

    List available forex pairs, filterable by symbol or currency

  • List Cryptocurrencies

    List available cryptocurrency pairs, filterable by symbol, exchange, or currency

  • List ETFs

    List available exchange-traded funds, filterable by symbol, country, fund family, or fund type

  • List Exchanges

    List available equity exchanges, filterable by asset type, name, MIC code, or country

  • List Cryptocurrency Exchanges

    List available cryptocurrency exchanges

  • Get Market State

    Get the current open or closed state of stock exchanges with time to next open or close

  • List Countries

    List countries with their ISO codes, capitals, and currencies

  • List Instrument Types

    List all available financial instrument types

  • Get Earliest Timestamp

    Get the earliest available datetime for an instrument at a given interval

  • Get API Usage

    Get the current API credit usage and plan limit for the connected key

  • List Fixed Income

    List Fixed Income

  • List Commodities

    List Commodities

  • List Cross Listings

    List Cross Listings

  • List Exchanges Schedule

    List Exchanges Schedule

  • List Funds

    List Funds

  • List Intervals List

    List Intervals List

  • List Market Movers

    List Market Movers

  • List Press Releases

    List Press Releases

  • Convert Currency

    Convert an amount between two currencies using the real-time exchange rate

Twelve Data AI Agent Use Cases

Connect your AI agent to Twelve Data and help your team scale the finance operations they run by hand today.

Invoice Processing

Automate invoice processing with AI agents connected to your ERP, accounting software, and AP tools through StackOne.

View
QuickBooks OnlineXeroNetSuiteSage IntacctBillFreshBooksWaveZoho Books
Accounts Receivable Dunning

Use StackOne to connect your AI agent to your accounting, CRM, and messaging systems to automate Accounts Receivable dunning and payment follow-up.

View
QuickBooksXeroFreshBooksStripePayPalSalesforceHubSpotGmail
Invoice Processing

Use StackOne to connect your AI agent to your accounting, email, and document management systems to automate invoice processing and purchase order matching.

View
QuickBooks OnlineXeroGmailOutlookGoogle DriveSharePointDropboxSlack
More Accounting & Finance use cases

Set Up Your Twelve Data MCP Server in Minutes

One endpoint. Any framework. Your agent is talking to Twelve Data in under 10 lines of code.

MCP Clients

Claude Desktop setup guide
Claude Code setup guide
Cursor setup guide
Goose setup guide

Agent Frameworks

Claude Desktop
{
  "mcpServers": {
    "stackone": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote@latest",
        "https://api.stackone.com/mcp?x-account-id=<account_id>",
        "--header",
        "Authorization: Basic <YOUR_BASE64_TOKEN>"
      ]
    }
  }
}

Check More finance-payments MCP Servers

Envi

100+ actions

Rillet

83+ actions

ApprovalMax

70+ actions

Timesheet Portal

68+ actions

Campfire

60+ actions

Procurify

52+ actions

All finance-payments MCP Servers →

Platform Resources

MCP Code Mode: Keeping Tool Responses Out of Agent Context

Anthropic's code_execution processes data already in context. Custom MCP code mode keeps raw tool responses in a sandbox. 14K tokens vs 500.

11 min

Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery

Benchmarking BM25, TF-IDF, and hybrid search for MCP tool discovery across 916 tools. The 80/20 TF-IDF/BM25 hybrid hits 21% Top-1 accuracy in under 1ms.

10 min

Indirect Prompt Injection Defense for MCP Tools: A Technical Guide

MCP tools that read emails, CRM records, and tickets are indirect prompt injection vectors. Here's how we built a two-tier defense that scans tool results in ~11ms.

12 min

MCP vs A2A: Architecture, Security, and When to Use Each

MCP vs A2A: what each protocol standardizes, how they differ, their shared security risks including indirect prompt injection, and when to use one, both, or a hybrid architecture.

12 min

MCP vs API: What Hundreds of Connector Builds Taught Us

MCP wraps APIs, it doesn't replace them. After building hundreds of connectors that serve both, here's when each approach wins.

14 min read

Twelve Data MCP Server FAQ

Does StackOne have a Twelve Data MCP server?
Yes. StackOne offers a hosted Twelve Data MCP server with 62 pre-built actions, and every action is tested and QA'd by StackOne. Connect it to Claude, Cursor, and any other MCP client, or to any agent framework through the AI Action SDK. It ships with managed agent authentication, prompt injection defense, and tool discovery with server-side execution that preserve your agent's context window and keep reasoning performance.
Twelve Data MCP server vs direct API integration — what's the difference?
A Twelve Data MCP server and direct API integration serve different use cases. Direct API integration is for software-to-software — backend code calling Twelve Data. A Twelve Data MCP server is for AI agents — MCP clients like Claude and Cursor, plus framework agents built with OpenAI, LangChain, or Vercel AI — discovering and calling Twelve Data at runtime. StackOne provides both.
How does Twelve Data authentication work for AI agents?
Twelve Data authentication for AI agents works through a StackOne Connect Session. Create one via the dashboard or the SDK — you get an auth link and ready-to-paste config for Claude Desktop, Cursor, and other MCP clients. Your user authenticates their own Twelve Data account; StackOne handles token exchange, storage, and refresh. Credentials never reach the LLM, and each user is isolated via origin_owner_id.
Are Twelve Data MCP tools vulnerable to prompt injection?
Yes — Twelve Data MCP tools can be vulnerable to indirect prompt injection. Any tool that reads user-written content — documents, messages, tickets, records, or free-text fields — is a potential vector. StackOne Defender scans every tool response before it enters the agent's context — regex patterns in ~1ms, then a MiniLM classifier in ~4ms. 88.7% accuracy, CPU-only.
What is the context bloat of a Twelve Data agent and how do I avoid it?
Context bloat happens when Twelve Data tool schemas and API responses eat your Twelve Data agent's memory, preventing it from reasoning effectively. A single Twelve Data query can return a massive JSON response, and connecting multiple tools compounds the problem. Tools Discovery and Code Mode reduce context bloat — loading only relevant tools per query and keeping raw responses out of the agent's context.
Can I limit which actions my Twelve Data agent can access?
Yes — you can limit which actions your Twelve Data agent can access directly from the StackOne dashboard. Toggle actions on or off, or restrict them to specific accounts, with no code changes to your agent. Session tokens can be scoped to exact actions so if one leaks, exposure stays contained.
Can I create custom agent actions for my Twelve Data MCP server?
Yes — you can create custom agent actions for your Twelve Data MCP server using Connector Builder. It's an integration agent your coding assistant (Claude Code, Cursor, or Copilot) can invoke to research Twelve Data's API, generate production-ready connector YAML, test against the live API, and validate before you ship.
When should I NOT use a Twelve Data MCP server?
Skip a Twelve Data MCP server if your integration is purely software-to-software — direct Twelve Data API integration is simpler when no AI agent is involved. For deterministic, compliance-critical operations (financial transactions, regulatory reporting), direct API gives you predictable behavior without agent-driven decision-making. MCP shines when AI agents need to dynamically discover and call Twelve Data actions at runtime.
What AI frameworks and AI clients does the StackOne Twelve Data MCP server support?
The StackOne Twelve Data MCP server supports both. MCP clients (paste-and-go apps): Claude Desktop, Claude Code, Cursor, VS Code, Goose. Agent frameworks (code SDKs you build with): OpenAI Agents SDK, Anthropic, Vercel AI, Google ADK, CrewAI, Pydantic AI, LangChain, LangGraph, Azure AI Foundry.

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