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Nephyr Backtest

Official registry Other

Prediction market strategy backtesting with real on-chain Polymarket data

Source code

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

PYPI package nephyr-backtest
Claude Code 
claude mcp add nephyr-backtest -- uvx nephyr-backtest==0.1.1
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "nephyr-backtest": {
            "command": "uvx",
            "args": [
                "nephyr-backtest==0.1.1"
            ]
        }
    }
}

Frequently asked questions

What is Nephyr Backtest?

Prediction market strategy backtesting with real on-chain Polymarket data

How do I install Nephyr Backtest?

It runs on your machine. In Claude Code: claude mcp add nephyr-backtest -- uvx nephyr-backtest==0.1.1. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Nephyr Backtest need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Nephyr Backtest open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Nephyr Backtest?

It is published by clm-studios. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.