---
title: "Backtesting Frameworks - Air Market"
description: "A trading strategy can look brilliant on historical data and lose money in reality, usually because the test quietly used information it would not have had, ignored the companies that went bust, or f…"
canonical: "https://airmarket.ai/app/backtesting-frameworks"
---

[Air Market](/) / [Finance](/category/finance) / Backtesting Frameworks

Skill by [Seth Hobson](/@wshobson)

# Backtesting Frameworks

Test a trading strategy without fooling yourself

## What this does

A trading strategy can look brilliant on historical data and lose money in reality, usually because the test quietly used information it would not have had, ignored the companies that went bust, or forgot what trading costs. This is about building backtests that handle those traps. Reach for it before you trust a result.

### Top 3 things it does for you

- Build a backtesting system for a strategy
- Keep look-ahead bias out of your results
- Account for survivorship bias and transaction costs

## Information

**Backtesting Frameworks at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Seth Hobson](/@wshobson) |
| Category | [Finance](/category/finance) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 21 KB |
| Licence | MIT |
| Repository | [wshobson/agents](https://github.com/wshobson/agents/tree/be57c0b2e3c05c528ca6132b87410b385718775f/plugins/quantitative-trading/skills/backtesting-frameworks) |
| GitHub stars | 39,077 (as of Nov 2026) |
| Installs | 17,597, counted by skills.sh (Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Backtesting Frameworks and flagged nothing. AIR's verdict: **safe**.

**What Backtesting Frameworks's check was run against**

|  |  |
| --- | --- |
| Commit | be57c0b2e3c05c528ca6132b87410b385718775f |
| Content hash | 5143d5cf03b5372011eee35f771da7614295853638e7518a660bf07fb8ddf594 |
| Files read | [Browse the files at this exact commit](https://github.com/wshobson/agents/blob/be57c0b2e3c05c528ca6132b87410b385718775f/plugins/quantitative-trading/skills/backtesting-frameworks/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Backtesting Frameworks](/security/backtesting-frameworks)

## About Backtesting Frameworks

This covers building backtesting systems for trading strategies, with proper handling of look-ahead bias, survivorship bias and transaction costs - the things that make a backtest flattering rather than honest.

Use it when developing trading algorithms, validating strategies, or building backtesting infrastructure.

## What's inside

- SKILL.md - instructions
- references/details.md - reference

## Questions

### Is Backtesting Frameworks safe to install?

AIR scanned this exact version of Backtesting Frameworks and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit be57c0b2e3c0, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/backtesting-frameworks.

### How do I install Backtesting Frameworks?

Open https://airmarket.ai/app/backtesting-frameworks on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/wshobson/agents/tree/be57c0b2e3c05c528ca6132b87410b385718775f/plugins/quantitative-trading/skills/backtesting-frameworks. Install from that link, not the branch.

## Related on Air Market

- [More Finance listings](/category/finance)
- [Everything by Seth Hobson](/@wshobson)

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Canonical URL: <https://airmarket.ai/app/backtesting-frameworks>