backtest-demo-favorites SKILL.md skillA
backtest-demo-favorites from spartanlabsxyz/simmer-sdk is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add spartanlabsxyz/simmer-sdk/backtest-demo-favorites@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- spartanlabsxyz/simmer-sdk
- Path
simmer_sdk/backtest/demo/backtest-demo-favorites/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Jun 13, 2026
- Size
- 980 bytes
- Repository stars
- 56
- License
- MIT
Tiny demo skill bundled with `simmer backtest --demo`. Buys YES on liquid favorites to exercise the full backtest pipeline offline.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Backtest demo — favorites buyer This is **not** a real trading strategy. It exists so `simmer backtest --demo` produces a meaningful report (decisions, trades, settlements, hit_rate, pnl, baselines) with no network access and no tape download. Each tick it buys a small fixed amount of YES on the most liquid markets trading as favorites (YES price in a mid-to-high band), skipping anything it already holds. Run against the bundled 10-market demo slice, a handful of those favorites resolve YES (wins) and a handful resolve NO (losses), so the demo shows a realistic mixed outcome rather than "0 trades, stayed flat". Entrypoint: `favorites_demo.py` (reads `SIMMER_API_URL` / `SIMMER_API_KEY` from the replay harness; accepts and ignores `--live` / `--quiet`).
Read the whole file at its exact version.
How to install
mdr add spartanlabsxyz/simmer-sdk/backtest-demo-favorites@sha256:29760c0bf7fce6b4The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_iqzkpbyhxjbrdbk4)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jun 13, 2026.
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 (980 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
spartanlabsxyz/simmer-sdk · 56 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_iqzkpbyhxjbrdbk4 GET https://markdownregistry.com/api/v1/resolve?ref=spartanlabsxyz/simmer-sdk/backtest-demo-favorites GET https://markdownregistry.com/api/v1/blob/29760c0bf7fce6b4fdea2d7eda66405bc711eb7ba78e1f25486fa2201432afc7
Your AI assistant 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.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.