labs21-dev/agents-stack · system-prompt-sop/SKILL.md

system-prompt-sop skillA

system-prompt-sop is agent-read markdown (skill) from labs21-dev/agents-stack: Design-time SOP for system prompts / agent harness prompts: route every constraint to its correct enforcement layer (validator/schema > harness > prompt example > prompt principle) instead of piling rules or vibes into the prompt. Use when the user asks to design, write, rewrite, review, or tune a system prompt; convert a rule-pile into principles; complains that an agent ignores rules, drifts in long tasks, or breaks red lines; wants to port a prompt to another model; or debates "principle vs r.

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

Latest version
mdr add labs21-dev/agents-stack/system-prompt-sop@git:20260912.9d47cf0
Exact content
mdr add labs21-dev/agents-stack/system-prompt-sop@sha256:cbfdfe52848156d5

Pin 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_oz6bjlkkk3kdk6oy.svg)](https://markdownregistry.com/a/art_oz6bjlkkk3kdk6oy)

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Versions

versioncommittedcommitsizeaudit
git:20260912.9d47cf0 latest2026-09-12 9d47cf0 5,747 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (5747 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

labs21-dev/agents-stack · 27 stars · license none · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_oz6bjlkkk3kdk6oy
GET https://markdownregistry.com/api/v1/resolve?ref=labs21-dev/agents-stack/system-prompt-sop
GET https://markdownregistry.com/api/v1/blob/cbfdfe52848156d54a5019c71aac9aab747b09288a435106e665b4fcf89aa1fe

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.