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antigravity-skills-reference/skills/backtesting-frameworks/SKILL.md
sck_0 aa71e76eb9 chore: release 6.5.0 - Community & Experience
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Features from merged PR #150:
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- Interactive Prompt Builder
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---
name: backtesting-frameworks
description: "Build robust backtesting systems for trading strategies with proper handling of look-ahead bias, survivorship bias, and transaction costs. Use when developing trading algorithms, validating strateg..."
risk: unknown
source: community
date_added: "2026-02-27"
---
# Backtesting Frameworks
Build robust, production-grade backtesting systems that avoid common pitfalls and produce reliable strategy performance estimates.
## Use this skill when
- Developing trading strategy backtests
- Building backtesting infrastructure
- Validating strategy performance and robustness
- Avoiding common backtesting biases
- Implementing walk-forward analysis
## Do not use this skill when
- You need live trading execution or investment advice
- Historical data quality is unknown or incomplete
- The task is only a quick performance summary
## Instructions
- Define hypothesis, universe, timeframe, and evaluation criteria.
- Build point-in-time data pipelines and realistic cost models.
- Implement event-driven simulation and execution logic.
- Use train/validation/test splits and walk-forward testing.
- If detailed examples are required, open `resources/implementation-playbook.md`.
## Safety
- Do not present backtests as guarantees of future performance.
- Avoid providing financial or investment advice.
## Resources
- `resources/implementation-playbook.md` for detailed patterns and examples.