How to integrate Api ninjas MCP with LlamaIndex

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Introduction

This guide walks you through connecting Api ninjas to LlamaIndex using the Composio tool router. By the end, you'll have a working Api ninjas agent that can get real-time bitcoin price and market data, check if this email is disposable, look up bank info for this bin through natural language commands.

This guide will help you understand how to give your LlamaIndex agent real control over a Api ninjas account through Composio's Api ninjas MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

Also integrate Api ninjas with

TL;DR

Here's what you'll learn:
  • Set your OpenAI and Composio API keys
  • Install LlamaIndex and Composio packages
  • Create a Composio Tool Router session for Api ninjas
  • Connect LlamaIndex to the Api ninjas MCP server
  • Build a Api ninjas-powered agent using LlamaIndex
  • Interact with Api ninjas through natural language

What is LlamaIndex?

LlamaIndex is a data framework for building LLM applications. It provides tools for connecting LLMs to external data sources and services through agents and tools.

Key features include:

  • ReAct Agent: Reasoning and acting pattern for tool-using agents
  • MCP Tools: Native support for Model Context Protocol
  • Context Management: Maintain conversation context across interactions
  • Async Support: Built for async/await patterns

What is the Api ninjas MCP server, and what's possible with it?

The Api ninjas MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Api ninjas account. It provides structured and secure access to a wide array of real-time data APIs, so your agent can perform actions like fetching financial data, generating barcodes, validating emails, and looking up domains on your behalf.

  • Fetch live financial and crypto data: Instantly retrieve up-to-date prices for stocks, commodities, ETFs, and cryptocurrencies, or access earnings calendars and transcripts for informed decision-making.
  • Barcode generation on demand: Have your agent create barcode images for custom data or text, perfect for inventory, tickets, or quick sharing of encoded information.
  • Email validation and security checks: Automatically check if an email address is disposable or risky before engaging users or sending communications.
  • Bank and payment info lookup: Look up bank details using BIN numbers, helping with payment processing, fraud detection, or financial analysis.
  • Domain and DNS diagnostics: Let your agent perform DNS lookups to fetch domain records, aiding in troubleshooting or technical audits quickly and efficiently.

Supported Tools & Triggers

Tools
Analyze Text SentimentTool to analyze the sentiment of text.
Generate Barcode ImageTool to generate a barcode image for specified text.
BIN LookupTool to look up bank information from a Bank Identification Number.
Get Bitcoin Price and Market DataTool to retrieve the latest Bitcoin price and 24-hour market data.
Calculate Calories BurnedTool to calculate calories burned for an activity based on duration and body weight.
Calculate MortgageTool to calculate mortgage payments and breakdowns.
Calculate Sales TaxTool to calculate sales tax for a purchase amount at a US location.
Check Domain AvailabilityTool to check domain availability and retrieve registration information.
Check If Date Is Public HolidayTool to check if a specific date is a public holiday in a given country.
Check If Date Is Working DayTool to check if a date is a working day in a specific country.
Check SpellingTool to check spelling and get corrections for text.
Commodity PriceGet real-time commodity prices from major exchanges (CME, NYMEX, COMEX).
Compute Text SimilarityTool to compute semantic similarity between two texts.
Convert CurrencyConvert between currencies using current exchange rates.
Convert UnitConvert between measurement units across different categories.
Crypto PriceGet the current real-time price for a cryptocurrency trading pair.
Detect Text LanguageTool to detect the language of input text.
Check Disposable EmailTool to check whether an email address is from a disposable email provider.
DNS LookupTool to retrieve DNS records for a specified domain.
Earnings CalendarFetches historical earnings data (EPS and revenue - actual vs.
Earnings Call TranscriptRetrieve the full earnings call transcript for a publicly traded company.
ETF InfoRetrieve detailed information about an Exchange-Traded Fund (ETF) by its ticker symbol.
Extract Webpage ContentTool to extract main content and metadata from a webpage.
Filter Profanity from TextTool to detect and censor profanity in text.
Find EV Charging StationsTool to find electric vehicle charging stations near a specified location.
Generate Lorem Ipsum TextTool to generate Lorem Ipsum placeholder text.
Generate Secure PasswordTool to generate secure random passwords with configurable length and character types.
Generate QR CodeTool to generate QR code images for encoding data.
Generate Random User ProfilesTool to generate fake random user profiles with realistic data.
Generate Sudoku PuzzleTool to generate a new Sudoku puzzle with a specified difficulty level.
Generate Text EmbeddingsTool to encode text into vector embeddings using NLP models.
Generate User Agent StringTool to generate realistic random user agent strings with optional filters for brand, model, OS, and browser.
Get Random Life AdviceTool to get a random piece of life advice from the API Ninjas Advice endpoint.
Get Aircraft InformationTool to retrieve aircraft information by manufacturer and model including specifications and performance data.
Get Airline InformationTool to retrieve airline information by name, IATA code, or ICAO code.
Get Airport InformationTool to search for airport information by IATA code, ICAO code, name, city, country, or region.
Get Air Quality DataTool to retrieve air quality index and pollutant data for a location.
Get Animal InformationTool to retrieve detailed scientific information about animal species including taxonomy, habitat, diet, and physical characteristics.
Get Baby NamesTool to get baby name suggestions by gender.
Get Random Bucket List IdeaTool to retrieve a random bucket list idea or activity.
Get Cat Breed InformationTool to retrieve information on cat breeds matching specified parameters.
Get Celebrity InformationTool to search for celebrity information by name or other criteria.
Get Chuck Norris JokeTool to retrieve a random Chuck Norris joke from the API Ninjas database.
Get City InformationTool to retrieve city information by name, country, coordinates, or population filters.
Get Cocktail RecipesTool to search for cocktail recipes by name or ingredients.
Get Company LogoTool to retrieve company logo images by company name or ticker symbol.
Get and Increment CounterTool to get and optionally increment a persistent counter.
Get Country Flag SVGTool to retrieve country flag images in SVG format.
Get Country InformationTool to retrieve detailed country information by name, ISO code, or filtering by economic and demographic criteria.
Get County InformationTool to retrieve US county information by name, ZIP code, or state.
Get Random Dad JokesTool to retrieve random dad jokes from API Ninjas.
Get Day in History EventsTool to get historical events for a specific date.
Get Dictionary DefinitionTool to retrieve dictionary definition for an English word.
Get Dog Breed InformationTool to get information on dog breeds matching specified parameters.
Get EarningsTool to retrieve comprehensive earnings report data for publicly traded companies.
Get Electric Vehicle InfoGet electric vehicle information by make, model, year range, or electric range.
Get Emoji InformationTool to retrieve emoji information and images from the API Ninjas Emoji database.
Get Exchange RateGet the current exchange rate for a currency pair.
Get ExercisesTool to get exercise information by muscle group, type, or difficulty level.
Get Fact of the DayTool to retrieve the fact of the day from API Ninjas.
Get Random FactsTool to retrieve random interesting facts from API Ninjas.
Get GDP DataTool to get GDP data for a country.
Convert City to CoordinatesTool to convert city names to geographic coordinates (forward geocoding).
Get Helicopter InformationTool to get helicopter information by manufacturer, model, and specifications.
Get Historical EventsTool to retrieve historical events by date or keywords.
Get Historical FiguresTool to search for historical figures by name.
Get Random Hobby SuggestionsTool to get random hobby suggestions from API Ninjas.
Get HolidaysTool to retrieve holidays for a specific country and year.
Get Daily HoroscopeTool to get daily horoscope for a zodiac sign.
Get Hospital InformationTool to retrieve hospital information by name, location, or geographic coordinates.
Income TaxGet current and historical income tax bracket rates for a country by year.
Get Insider TransactionsTool to get insider trading transactions for publicly traded companies.
Get IP GeolocationTool to retrieve geolocation information for an IP address.
Get Joke of the DayTool to retrieve the joke of the day from API Ninjas.
Get Random JokesTool to retrieve random jokes from API Ninjas.
Get Motorcycle SpecificationsTool to get detailed motorcycle specifications by make, model, and year.
Get Mutual Fund InfoTool to get mutual fund information by ticker.
Get MX RecordsTool to retrieve MX (Mail Exchange) records for a specified domain.
Get Planet InformationTool to retrieve detailed information about planets and exoplanets including mass, radius, orbital period, temperature, and host star data.
Get Population DataTool to get population data for a country.
Get Postal Code Location InfoTool to retrieve location information for Canadian postal codes.
Get Property Tax RatesTool to get property tax rates by city, county, or ZIP code.
Get Public HolidaysTool to retrieve official public holidays for a specific country and year.
Get Quote of the DayTool to retrieve the quote of the day from API Ninjas.
Get Random QuotesTool to get random quotes from famous people, filtered by category or author.
Get Random ImageTool to get a random image by category from API Ninjas.
Get Random QuotesTool to retrieve random quotes from API Ninjas.
Get Random WordTool to get a random English word from the API Ninjas Random Word endpoint.
Get RecipeTool to search for recipes by title or ingredients from a database of over 200,000 recipes.
Convert Coordinates to LocationTool to convert geographic coordinates to location information (reverse geocoding).
Get Rhyming WordsTool to get words that rhyme with a given word.
Get Random RiddlesTool to retrieve random riddles with answers from API Ninjas.
Get Sales Tax RatesTool to get sales tax rates by ZIP code or city and state.
Get SEC FilingTool to retrieve SEC filing information for publicly traded companies.
Get S&P 500 ConstituentsTool to retrieve current S&P 500 index constituents with filtering by ticker, name, sector, or date added.
Get Star InformationTool to retrieve detailed information about stars including name, constellation, coordinates, magnitude, distance, and spectral classification.
Get Stock Exchange InformationTool to retrieve stock exchange information by Market Identifier Code (MIC), name, city, or country.
Get Stock PriceTool to get current stock price data for any publicly traded company or index.
Get SWIFT CodeTool to get bank information from SWIFT code or search by bank name, city, or country.
Get ThesaurusTool to get synonyms and antonyms for an English word.
Get TickerTool to retrieve comprehensive company profile information for publicly traded companies by stock ticker symbol.
Get Timezone InformationTool to get timezone information for a location including UTC offset, local time, and timezone name.
Get Trivia QuestionsTool to retrieve trivia questions by category from API Ninjas.
Get Trivia of the DayTool to retrieve the trivia question of the day from API Ninjas.
Get Unemployment RateTool to get unemployment rate data for countries.
Get University InformationTool to retrieve university information by name or country.
Get URL Location InfoTool to get location information for a URL domain.
Get Current WeatherTool to retrieve current weather data for a location.
Get Weather ForecastTool to retrieve 5-day weather forecast in 3-hour intervals for a location.
Get WHOIS InformationTool to get WHOIS domain registration information including registrar, creation date, and expiration date.
Get Working DaysTool to get working days for a specific country and time period.
Get World TimeTool to get current date and time for a location with detailed date/time components.
Get US Zipcode Location InfoTool to retrieve location information for US zip codes.
IBAN LookupTool to look up and validate an International Bank Account Number (IBAN).
Income Tax CalculatorTool to calculate income taxes for US and Canada.
Get Inflation DataTool to get current inflation data for a country.
Interest RateTool to get current interest rates for central banks and benchmarks.
List Stock TickersTool to retrieve a paginated list of all available stock ticker symbols and company names.
VIN LookupTool to decode Vehicle Identification Number (VIN) and retrieve vehicle information.
Market CapTool to get real-time market cap data for a company.
Mortgage RateTool to get current and historical mortgage rates.
Extract Nutrition InformationTool to extract nutrition information from text query.
Scrape Website ContentTool to scrape HTML content from a URL using the API Ninjas Webscraper endpoint.
Solve Sudoku PuzzleTool to solve a Sudoku puzzle using the API Ninjas Sudoku Solver.
Validate EmailTool to validate email address format and check deliverability.
Validate EU VATTool to retrieve and validate EU VAT (Value Added Tax) rates by country code.
Validate Phone NumberTool to validate and format phone numbers.
Validate Routing NumberTool to validate and retrieve bank information from a routing number.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Prerequisites

Before you begin, make sure you have:
  • Python 3.8/Node 16 or higher installed
  • A Composio account with the API key
  • An OpenAI API key
  • A Api ninjas account and project
  • Basic familiarity with async Python/Typescript

Getting API Keys for OpenAI, Composio, and Api ninjas

OpenAI API key (OPENAI_API_KEY)
  • Go to the OpenAI dashboard
  • Create an API key if you don't have one
  • Assign it to OPENAI_API_KEY in .env
Composio API key and user ID
  • Log into the Composio dashboard
  • Copy your API key from Settings
    • Use this as COMPOSIO_API_KEY
  • Pick a stable user identifier (email or ID)
    • Use this as COMPOSIO_USER_ID

Installing dependencies

pip install composio-llamaindex llama-index llama-index-llms-openai llama-index-tools-mcp python-dotenv

Create a new Python project and install the necessary dependencies:

  • composio-llamaindex: Composio's LlamaIndex integration
  • llama-index: Core LlamaIndex framework
  • llama-index-llms-openai: OpenAI LLM integration
  • llama-index-tools-mcp: MCP client for LlamaIndex
  • python-dotenv: Environment variable management

Set environment variables

bash
OPENAI_API_KEY=your-openai-api-key
COMPOSIO_API_KEY=your-composio-api-key
COMPOSIO_USER_ID=your-user-id

Create a .env file in your project root:

These credentials will be used to:

  • Authenticate with OpenAI's GPT-5 model
  • Connect to Composio's Tool Router
  • Identify your Composio user session for Api ninjas access

Import modules

import asyncio
import os
import dotenv

from composio import Composio
from composio_llamaindex import LlamaIndexProvider
from llama_index.core.agent.workflow import ReActAgent
from llama_index.core.workflow import Context
from llama_index.llms.openai import OpenAI
from llama_index.tools.mcp import BasicMCPClient, McpToolSpec

dotenv.load_dotenv()

Create a new file called api ninjas_llamaindex_agent.py and import the required modules:

Key imports:

  • asyncio: For async/await support
  • Composio: Main client for Composio services
  • LlamaIndexProvider: Adapts Composio tools for LlamaIndex
  • ReActAgent: LlamaIndex's reasoning and action agent
  • BasicMCPClient: Connects to MCP endpoints
  • McpToolSpec: Converts MCP tools to LlamaIndex format

Load environment variables and initialize Composio

OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID")

if not OPENAI_API_KEY:
    raise ValueError("OPENAI_API_KEY is not set in the environment")
if not COMPOSIO_API_KEY:
    raise ValueError("COMPOSIO_API_KEY is not set in the environment")
if not COMPOSIO_USER_ID:
    raise ValueError("COMPOSIO_USER_ID is not set in the environment")

What's happening:

This ensures missing credentials cause early, clear errors before the agent attempts to initialise.

Create a Tool Router session and build the agent function

async def build_agent() -> ReActAgent:
    composio_client = Composio(
        api_key=COMPOSIO_API_KEY,
        provider=LlamaIndexProvider(),
    )

    session = composio_client.create(
        user_id=COMPOSIO_USER_ID,
        toolkits=["api_ninjas"],
    )

    mcp_url = session.mcp.url
    print(f"Composio MCP URL: {mcp_url}")

    mcp_client = BasicMCPClient(mcp_url, headers={"x-api-key": COMPOSIO_API_KEY})
    mcp_tool_spec = McpToolSpec(client=mcp_client)
    tools = await mcp_tool_spec.to_tool_list_async()

    llm = OpenAI(model="gpt-5")

    description = "An agent that uses Composio Tool Router MCP tools to perform Api ninjas actions."
    system_prompt = """
    You are a helpful assistant connected to Composio Tool Router.
    Use the available tools to answer user queries and perform Api ninjas actions.
    """
    return ReActAgent(tools=tools, llm=llm, description=description, system_prompt=system_prompt, verbose=True)

What's happening here:

  • We create a Composio client using your API key and configure it with the LlamaIndex provider
  • We then create a tool router MCP session for your user, specifying the toolkits we want to use (in this case, api ninjas)
  • The session returns an MCP HTTP endpoint URL that acts as a gateway to all your configured tools
  • LlamaIndex will connect to this endpoint to dynamically discover and use the available Api ninjas tools.
  • The MCP tools are mapped to LlamaIndex-compatible tools and plug them into the Agent.

Create an interactive chat loop

async def chat_loop(agent: ReActAgent) -> None:
    ctx = Context(agent)
    print("Type 'quit', 'exit', or Ctrl+C to stop.")

    while True:
        try:
            user_input = input("\nYou: ").strip()
        except (KeyboardInterrupt, EOFError):
            print("\nBye!")
            break

        if not user_input or user_input.lower() in {"quit", "exit"}:
            print("Bye!")
            break

        try:
            print("Agent: ", end="", flush=True)
            handler = agent.run(user_input, ctx=ctx)

            async for event in handler.stream_events():
                # Stream token-by-token from LLM responses
                if hasattr(event, "delta") and event.delta:
                    print(event.delta, end="", flush=True)
                # Show tool calls as they happen
                elif hasattr(event, "tool_name"):
                    print(f"\n[Using tool: {event.tool_name}]", flush=True)

            # Get final response
            response = await handler
            print()  # Newline after streaming
        except KeyboardInterrupt:
            print("\n[Interrupted]")
            continue
        except Exception as e:
            print(f"\nError: {e}")

What's happening here:

  • We're creating a direct terminal interface to chat with your Api ninjas database
  • The LLM's responses are streamed to the CLI for faster interaction.
  • The agent uses context to maintain conversation history
  • You can type 'quit' or 'exit' to stop the chat loop gracefully
  • Agent responses and any errors are displayed in a clear, readable format

Define the main entry point

async def main() -> None:
    agent = await build_agent()
    await chat_loop(agent)

if __name__ == "__main__":
    # Handle Ctrl+C gracefully
    signal.signal(signal.SIGINT, lambda s, f: (print("\nBye!"), exit(0)))
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        print("\nBye!")

What's happening here:

  • We're orchestrating the entire application flow
  • The agent gets built with proper error handling
  • Then we kick off the interactive chat loop so you can start talking to Api ninjas

Run the agent

npx ts-node llamaindex-agent.ts

When prompted, authenticate and authorise your agent with Api ninjas, then start asking questions.

Complete Code

Here's the complete code to get you started with Api ninjas and LlamaIndex:

import asyncio
import os
import signal
import dotenv

from composio import Composio
from composio_llamaindex import LlamaIndexProvider
from llama_index.core.agent.workflow import ReActAgent
from llama_index.core.workflow import Context
from llama_index.llms.openai import OpenAI
from llama_index.tools.mcp import BasicMCPClient, McpToolSpec

dotenv.load_dotenv()

OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID")

if not OPENAI_API_KEY:
    raise ValueError("OPENAI_API_KEY is not set")
if not COMPOSIO_API_KEY:
    raise ValueError("COMPOSIO_API_KEY is not set")
if not COMPOSIO_USER_ID:
    raise ValueError("COMPOSIO_USER_ID is not set")

async def build_agent() -> ReActAgent:
    composio_client = Composio(
        api_key=COMPOSIO_API_KEY,
        provider=LlamaIndexProvider(),
    )

    session = composio_client.create(
        user_id=COMPOSIO_USER_ID,
        toolkits=["api_ninjas"],
    )

    mcp_url = session.mcp.url
    print(f"Composio MCP URL: {mcp_url}")

    mcp_client = BasicMCPClient(mcp_url, headers={"x-api-key": COMPOSIO_API_KEY})
    mcp_tool_spec = McpToolSpec(client=mcp_client)
    tools = await mcp_tool_spec.to_tool_list_async()

    llm = OpenAI(model="gpt-5")
    description = "An agent that uses Composio Tool Router MCP tools to perform Api ninjas actions."
    system_prompt = """
    You are a helpful assistant connected to Composio Tool Router.
    Use the available tools to answer user queries and perform Api ninjas actions.
    """
    return ReActAgent(
        tools=tools,
        llm=llm,
        description=description,
        system_prompt=system_prompt,
        verbose=True,
    );

async def chat_loop(agent: ReActAgent) -> None:
    ctx = Context(agent)
    print("Type 'quit', 'exit', or Ctrl+C to stop.")

    while True:
        try:
            user_input = input("\nYou: ").strip()
        except (KeyboardInterrupt, EOFError):
            print("\nBye!")
            break

        if not user_input or user_input.lower() in {"quit", "exit"}:
            print("Bye!")
            break

        try:
            print("Agent: ", end="", flush=True)
            handler = agent.run(user_input, ctx=ctx)

            async for event in handler.stream_events():
                # Stream token-by-token from LLM responses
                if hasattr(event, "delta") and event.delta:
                    print(event.delta, end="", flush=True)
                # Show tool calls as they happen
                elif hasattr(event, "tool_name"):
                    print(f"\n[Using tool: {event.tool_name}]", flush=True)

            # Get final response
            response = await handler
            print()  # Newline after streaming
        except KeyboardInterrupt:
            print("\n[Interrupted]")
            continue
        except Exception as e:
            print(f"\nError: {e}")

async def main() -> None:
    agent = await build_agent()
    await chat_loop(agent)

if __name__ == "__main__":
    # Handle Ctrl+C gracefully
    signal.signal(signal.SIGINT, lambda s, f: (print("\nBye!"), exit(0)))
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        print("\nBye!")

Conclusion

You've successfully connected Api ninjas to LlamaIndex through Composio's Tool Router MCP layer. Key takeaways:
  • Tool Router dynamically exposes Api ninjas tools through an MCP endpoint
  • LlamaIndex's ReActAgent handles reasoning and orchestration; Composio handles integrations
  • The agent becomes more capable without increasing prompt size
  • Async Python provides clean, efficient execution of agent workflows
You can easily extend this to other toolkits like Gmail, Notion, Stripe, GitHub, and more by adding them to the toolkits parameter.

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FAQ

What are the differences in Tool Router MCP and Api ninjas MCP?

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

Can I use Tool Router MCP with LlamaIndex?

Yes, you can. LlamaIndex 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 Api ninjas tools.

Can I manage the permissions and scopes for Api ninjas while using Tool Router?

Yes, absolutely. You can configure which Api ninjas 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 Api ninjas data and credentials are handled as safely as possible.

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