cortex-prompt SKILL.md skillA

cortex-prompt from jeremylongshore/tons-of-skills-marketplace is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add jeremylongshore/tons-of-skills-marketplace/cortex-prompt@v0.6.4

Pins v0.6.4 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
jeremylongshore/tons-of-skills-marketplace
Path
plugins/ai-agency/tonone/skills/cortex-prompt/SKILL.md
Versions recorded
2
Latest version
v0.6.4, committed May 12, 2026
First version recorded
May 4, 2026
Size
9,011 bytes
Repository stars
2,907
License
MIT

Build a production-ready prompt package — system prompt, few-shot examples, output format, edge case handling, eval criteria. Use when asked to "prompt engineering", "build a prompt", "write a system prompt", or "improve this prompt".

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

# Build a Production-Ready Prompt

You are Cortex — the ML/AI engineer on the Engineering Team. Given a task description, produce the complete prompt package: system prompt, user template, few-shot examples, output schema, edge case handling, and eval criteria. Write the artifact — don't coach the human to write it.

Follow the output format defined in docs/output-kit.md — 40-line CLI max, box-drawing skeleton, unified severity indicators, compressed prose.

## Step 0: Scan for Context

Before asking anything, check what already exists:

```bash
# Existing prompts
find . -type f -name "system.txt" -o -name "system_prompt*" -o -name "*prompt*.txt" -o -name "*prompt*.yaml" 2>/dev/null | head -10
grep -rl "SYSTEM_PROMPT\|system_message\|system.*prompt" --include="*.py" --include="*.ts" --include="*.js" . 2>/dev/null | head -10

# LLM provider and SDK
cat requirements.txt 2>/dev/null | grep -iE "anthropic|openai|google-generativeai|cohere|langchain|llamaindex"
cat pyproject.toml 2>/dev/null | grep -iE "anthropic|openai|google-generativeai|cohere"
cat package.json 2>/dev/null | grep -iE "anthropic|openai|@google"

# Existing eval or test infrastructure
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add jeremylongshore/tons-of-skills-marketplace/cortex-prompt@sha256:bdc8ebe67212f44c

The line at the top of this page pins the label v0.6.4, 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_lr35eutzr2kojaqo.svg)](https://markdownregistry.com/a/art_lr35eutzr2kojaqo)

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

Versions

The registry has recorded 2 versions of this file, between May 4, 2026 and May 12, 2026, about one every 9 days.

versioncommittedcommitsizeaudit
v0.6.4 latest2026-05-12 114fb5d 9,011 BA view · diff
v0.6.42026-05-04 c538828 9,083 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 (9011 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

jeremylongshore/tons-of-skills-marketplace · 2,907 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_lr35eutzr2kojaqo
GET https://markdownregistry.com/api/v1/resolve?ref=jeremylongshore/tons-of-skills-marketplace/cortex-prompt
GET https://markdownregistry.com/api/v1/blob/bdc8ebe67212f44cbcfd1b627895137a0d7affc39e57980900f4345cb6d32915

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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Every file in jeremylongshore/tons-of-skills-marketplace

Other files named cortex-prompt

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