execution-realistic-simulation SKILL.md skillA

execution-realistic-simulation from himanshuj16/algo-trading-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add himanshuj16/algo-trading-skills/execution-realistic-simulation@v2.0.0

Pins v2.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
himanshuj16/algo-trading-skills
Path
skills/execution-realistic-simulation/SKILL.md
Versions recorded
5
Latest version
v2.0.0, committed Sep 3, 2026
First version recorded
Jul 30, 2026
Size
10,784 bytes
Repository stars
50
License
Apache-2.0

Use when a backtest reports fills at the signal bar close with no slippage or fees; models a marketable order crossing the spread with latency, impact and commission. Passive resting orders need a queue-position model instead.

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

## When to Use

Invoke this whenever a backtest reports a fill price without an explicit, justified execution model behind it. A backtest that fills every order at the exact signal-bar close or exact quoted price, with no slippage and no fees, will systematically overstate performance — often enough to make a genuinely unprofitable strategy look profitable, especially for higher-frequency strategies or less liquid instruments (many options strikes) where the gap between "ideal" and "actual" fill is largest.

The cost stack is not a rounding error. On NSE equity options at the rates effective 1 April 2026, a round trip of ₹1,00,000 premium bought and sold costs roughly ₹284 in brokerage, STT, exchange charges, stamp duty and GST — before a single paisa of spread or impact. A strategy whose edge is smaller than its cost stack does not have an edge.

## When NOT to Use
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add himanshuj16/algo-trading-skills/execution-realistic-simulation@sha256:ac4b4db74726148d

The line at the top of this page pins the label v2.0.0, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_5ui54xri75fkgr4n.svg)](https://markdownregistry.com/a/art_5ui54xri75fkgr4n)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Jul 30, 2026 and Sep 3, 2026, about one every 9 days.

versioncommittedcommitsizeaudit
v2.0.0 latest2026-09-03 8527a51 10,784 BA view · diff
v2.0.02026-09-03 64e8b01 10,746 BA view · diff
v2.0.02026-08-25 7e72405 10,612 BA view · diff
v1.0.02026-08-07 89d1436 5,456 BA view · diff
v1.02026-07-30 dfc60c7 5,454 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10784 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

GitHub

himanshuj16/algo-trading-skills · 50 stars · license Apache-2.0 · pushed 2026-09-14 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_5ui54xri75fkgr4n
GET https://markdownregistry.com/api/v1/resolve?ref=himanshuj16/algo-trading-skills/execution-realistic-simulation
GET https://markdownregistry.com/api/v1/blob/ac4b4db74726148d7b8739ea7332dbfeea80bbe054956bd47a325f63f4cfe13c

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.

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