Tavily MCP Server

A Model Context Protocol server that provides AI-powered web search capabilities using Tavily's search API. This server enables LLMs to perform sophisticated web searches, get direct answers to questions, and search recent news articles with AI-extracted relevant content.

Features

Available Tools

tavily_web_search - Performs comprehensive web searches with AI-powered content extraction.
- query (string, required): Search query
- max_results (integer, optional): Maximum number of results to return (default: 5, max: 20)
- search_depth (string, optional): Either "basic" or "advanced" search depth (default: "basic")
- include_domains (list or string, optional): List of domains to specifically include in results
- exclude_domains (list or string, optional): List of domains to exclude from results
tavily_answer_search - Performs web searches and generates direct answers with supporting evidence.
- query (string, required): Search query
- max_results (integer, optional): Maximum number of results to return (default: 5, max: 20)
- search_depth (string, optional): Either "basic" or "advanced" search depth (default: "advanced")
- include_domains (list or string, optional): List of domains to specifically include in results
- exclude_domains (list or string, optional): List of domains to exclude from results
tavily_news_search - Searches recent news articles with publication dates.
- query (string, required): Search query
- max_results (integer, optional): Maximum number of results to return (default: 5, max: 20)
- days (integer, optional): Number of days back to search (default: 3)
- include_domains (list or string, optional): List of domains to specifically include in results
- exclude_domains (list or string, optional): List of domains to exclude from results

Prompts

The server also provides prompt templates for each search type:

tavily_web_search - Search the web using Tavily's AI-powered search engine
tavily_answer_search - Search the web and get an AI-generated answer with supporting evidence
tavily_news_search - Search recent news articles with Tavily's news search

Prerequisites

Python 3.11 or later
A Tavily API key (obtain from Tavily's website)
uv Python package manager (recommended)

Installation

Option 1: Using pip or uv

# With pip
pip install mcp-tavily

# Or with uv (recommended)
uv add mcp-tavily

You should see output similar to:

Resolved packages: mcp-tavily, mcp, pydantic, python-dotenv, tavily-python [...]
Successfully installed mcp-tavily-0.1.4 mcp-1.0.0 [...]

Option 2: From source

# Clone the repository
git clone https://github.com/RamXX/mcp-tavily.git
cd mcp-tavily

# Create a virtual environment (optional but recommended)
python -m venv .venv
source .venv/bin/activate  # On Windows: .venv\Scripts\activate

# Install dependencies and build
uv sync  # Or: pip install -r requirements.txt
uv build  # Or: pip install -e .

# To install with test dependencies:
uv sync --dev  # Or: pip install -r requirements-dev.txt

During installation, you should see the package being built and installed with its dependencies.

Configuration

API Key Setup

The server requires a Tavily API key, which can be provided in three ways:

Through a .env file in your project directory:
TAVILY_API_KEY=your_api_key_here
As an environment variable:
export TAVILY_API_KEY=your_api_key_here
As a command-line argument:
python -m mcp_server_tavily --api-key=your_api_key_here

Configure for Claude.app

Add to your Claude settings:

"mcpServers": {
  "tavily": {
    "command": "python",
    "args": ["-m", "mcp_server_tavily"]
  },
  "env": {
    "TAVILY_API_KEY": "your_api_key_here"
  }
}

If you encounter issues, you may need to specify the full path to your Python interpreter. Run which python to find the exact path.

Usage Examples

For a regular web search:

Tell me about Anthropic's newly released MCP protocol

To generate a report with domain filtering:

Tell me about redwood trees. Please use MLA format in markdown syntax and include the URLs in the citations. Exclude Wikipedia sources.

To use answer search mode for direct answers:

I want a concrete answer backed by current web sources: What is the average lifespan of redwood trees?

For news search:

Give me the top 10 AI-related news in the last 5 days

Testing

The project includes a comprehensive test suite. To run the tests:

Install test dependencies:
source .venv/bin/activate # If using a virtual environment uv sync --dev # Or: pip install -r requirements-dev.txt
Run the tests:
./tests/run_tests.sh

You should see output similar to:

============================= test session starts ==============================
collected 27 items

tests/test_models.py ................. [ 62%]
tests/test_utils.py ..... [ 81%]
tests/test_integration.py ..... [100%]

---------- coverage: platform darwin, python 3.13.2-final-0 ----------
Name                                Stmts   Miss  Cover
-------------------------------------------------------
src/mcp_server_tavily/__init__.py      16      2    88%
src/mcp_server_tavily/__main__.py       2      2     0%
src/mcp_server_tavily/server.py       137     80    42%
-------------------------------------------------------
TOTAL                                 155     84    46%


============================== 27 passed in 0.40s ==============================

The test suite includes tests for data models, utility functions, integration testing, error handling, and parameter validation. It focuses on verifying that all API capabilities work correctly, including handling of domain filters and various input formats.

Debugging

You can use the MCP inspector to debug the server:

# Using npx
npx @modelcontextprotocol/inspector python -m mcp_server_tavily

# For development
cd path/to/mcp-tavily
npx @modelcontextprotocol/inspector python -m mcp_server_tavily

Contributing

We welcome contributions to improve mcp-tavily! Here's how you can help:

Fork the repository
Create a feature branch (git checkout -b feature/amazing-feature)
Make your changes
Run tests to ensure they pass
Commit your changes (git commit -m 'Add amazing feature')
Push to the branch (git push origin feature/amazing-feature)
Open a Pull Request

For examples of other MCP servers and implementation patterns, see: https://github.com/modelcontextprotocol/servers

License

mcp-tavily is licensed under the MIT License. See the LICENSE file for details.