Nephyr Backtest

io.github.clm-studiosPublished by GitHub account clm-studiosv0.1.1Updated Oct 24, 2026

Prediction market strategy backtesting with real on-chain Polymarket data

VerifiedSTDIODesktop onlyFinance

Server details

Identifier: io.github.clm-studios/nephyr-backtest
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

Security note

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Overview

AI-generated overview

Nephyr Backtest is a local MCP server for backtesting prediction market strategies against real on-chain Polymarket data.

What you can do: Backtest prediction market trading strategies using real on-chain Polymarket data, run locally as a Python package over stdio. The manifest lists no tools, so the exact operations available to an assistant are not documented here.
When to use it: Consider it when you want an assistant to help evaluate prediction market strategies against historical Polymarket data rather than synthetic or offline data.
Requirements: Runs as a local process on the user's machine, installed from the PyPI package nephyr-backtest and started with uvx, so a Python environment with uv is needed. Desktop only; no authentication, environment variables or headers are declared.

Before you install

The manifest declares no credentials, but the server is undocumented beyond one line: no tool list, instructions or README are provided, so review what it actually does before installing. Backtesting results are historical simulations and do not guarantee future outcomes.

Installation

In SourceWeft

Open Nephyr Backtest in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

This repository has no README.

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v0.1.1LatestSep 16, 2026

Score

25% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 days25 pts
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Auth declared10 pts
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Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
License10 pts
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