backtest-diagnose skillA
backtest-diagnose is agent-read markdown (skill) from hkuds/vibe-trading: Diagnose failed or underperforming backtests, locate the root cause, and fix the issue.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified before it reaches your agent: the main file against the SHA-256 recorded here, the others against the git hashes of its source commit. The deterministic audit below grades the latest version, and the same checks always give the same file the same grade.
What the file says
# Backtest Diagnosis
## Overview
Use this skill when a user reports that a backtest failed, raised an error, or produced poor results.
## Diagnostic Workflow
1. **Read existing artifacts**: use `read_file` to inspect `artifacts/metrics.csv`, `equity.csv`, and `trades.csv`
2. **Read the code**: use `read_file` to inspect `code/signal_engine.py` and `config.json`
3. **Classify the issue**: determine the root cause using the error taxonomy below
4. **Apply the fix**: use `edit_file` to modify the code, then rerun the backtest
5. **Verify the fix**: use `read_file` to inspect the new `metrics.csv`
## Error Taxonomy
### Runtime Errors (`exit_code != 0`)
| Error Type | Common Cause | Fix |
|---------|---------|---------|
| ImportError | Missing dependency | `bash("pip install xxx")` |
| KeyError | DataFrame column-name mismatch | Check the actual column names in `data_map` |
| IndexError | Empty data or insufficient length | Add length checks |
| TypeError | Incorrect signal type | Ensure the return value is `pd.Series` |
### Logic Bugs (Backtest Succeeds but Results Are Abnormal)
…Read the whole file at its exact version.
How to install
mdr add hkuds/vibe-trading/backtest-diagnose@git:20260819.ae68820mdr add hkuds/vibe-trading/backtest-diagnose@sha256:591c26aaad476e54Pin to a label to follow the author's releases, or to a sha256 for exact bytes. Either way the resolved hash is written to mdr.lock, and mdr install fetches those bytes again and checks them, so it installs them exactly or fails.
[](https://markdownregistry.com/a/art_2lcsv7oryll6z2bj)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260819.ae68820 latest | 2026-08-19 | ae68820 | 4,981 B | A | view · diff |
| git:20260409.27354eb | 2026-04-09 | 27354eb | 4,264 B | A | view · diff |
| git:20260401.34eae37 | 2026-04-01 | 34eae37 | 4,249 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4981 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
hkuds/vibe-trading · 34,089 stars · license MIT · pushed 2026-09-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2lcsv7oryll6z2bj GET https://markdownregistry.com/api/v1/resolve?ref=hkuds/vibe-trading/backtest-diagnose GET https://markdownregistry.com/api/v1/blob/591c26aaad476e54ec23df50da39e711cd544e98f3f3c810042e0b42e911be51
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.