backtest-look-ahead-in-universe-selection skillA
backtest-look-ahead-in-universe-selection is agent-read markdown (skill) from himanshuj16/algo-trading-skills: Use when the backtest picks its universe by a rule such as top 50 by market cap or current index membership; audits membership timestamps so 2015 is not traded with 2026 constituents. Feature-level leakage belongs to lookahead-bias-elimination..
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 against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
How to install
mdr add himanshuj16/algo-trading-skills/backtest-look-ahead-in-universe-selection@v2.0.0mdr add himanshuj16/algo-trading-skills/backtest-look-ahead-in-universe-selection@sha256:11666070d2591750Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_3ra6c2mprd7c7ysx)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.0.0 latest | 2026-09-03 | 8527a51 | 7,212 B | A | view · diff |
| v2.0.0 | 2026-09-03 | 64e8b01 | 7,244 B | A | view · diff |
| v2.0.0 | 2026-08-13 | 097e217 | 7,206 B | A | view · diff |
| v1.0.0 | 2026-08-07 | 89d1436 | 2,230 B | A | view · diff |
| v1.0 | 2026-07-30 | dfc60c7 | 2,219 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 (7212 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
himanshuj16/algo-trading-skills · 2 stars · license Apache-2.0 · pushed 2026-09-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3ra6c2mprd7c7ysx GET https://markdownregistry.com/api/v1/resolve?ref=himanshuj16/algo-trading-skills/backtest-look-ahead-in-universe-selection GET https://markdownregistry.com/api/v1/blob/11666070d2591750ecc16a97263f309707625bd613e03cc88497a2b574ce00e2