ResearchMCP
MCP server for Perplexity
chew-z
README
ResearchMCP
A Model Completion Protocol (MCP) service for internet research using Perplexity AI.
Overview
ResearchMCP is a service that provides internet research capabilities through the MCP protocol. It exposes a "research" tool that allows querying Perplexity AI's API for in-depth, up-to-date information on a wide range of topics.
Features
- Internet research through Perplexity AI
- Integration with MCP protocol for tool discovery and invocation
- Graceful error handling with degraded mode
- Configurable through environment variables
- Structured logging
Requirements
- Go 1.18 or later
- Perplexity AI API key
Configuration
The service is configured through environment variables:
Variable | Description | Required | Default |
---|---|---|---|
PERPLEXITY_API_KEY | API key for Perplexity AI | Yes | - |
PERPLEXITY_MODEL | Model to use for research | No | sonar-medium-online |
PERPLEXITY_TIMEOUT | Timeout in seconds for API requests | No | 90 |
PERPLEXITY_MAX_RETRIES | Maximum number of retry attempts | No | 2 |
PERPLEXITY_INITIAL_BACKOFF | Initial backoff time in seconds | No | 1 |
PERPLEXITY_MAX_BACKOFF | Maximum backoff time in seconds | No | 10 |
Usage
- Set up the required environment variables (you can use a
.env
file) - Build and run the service:
go build
./ResearchMCP
Example .env file
PERPLEXITY_API_KEY=your_api_key_here
PERPLEXITY_MODEL=sonar-medium-online
PERPLEXITY_TIMEOUT=120
PERPLEXITY_MAX_RETRIES=3
PERPLEXITY_INITIAL_BACKOFF=2
PERPLEXITY_MAX_BACKOFF=15
API
Research Tool
Name: research
Input Schema:
{
"type": "object",
"properties": {
"query": {
"type": "string",
"description": "The research query or question"
}
},
"required": ["query"]
}
Example Request:
{
"name": "research",
"arguments": {
"query": "What is the current state of quantum computing?"
}
}
Example Response:
{
"content": [
{
"type": "text",
"text": "Comprehensive research report on quantum computing...\n\nSources:\n- https://example.com/source1\n- https://example.com/source2"
}
]
}
Development
Project Structure
main.go
: Application entry pointconfig.go
: Configuration handlinglogger.go
: Logging infrastructureperplexity.go
: Perplexity API integrationstructs.go
: Data structurescontext.go
: Context handling
Code Style
Run formatting and linting with the provided scripts:
./run_format.sh
./run_lint.sh
License
This project is licensed under the MIT License - see the LICENSE file for details.
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