fabricioctelles/skills · skills/substack-expert/SKILL.md

substack-expert skillA

substack-expert is agent-read markdown (skill) from fabricioctelles/skills: This skill should be used when creating, formatting, or optimizing content for a Substack newsletter. Covers post structure, SEO metadata (titles, slugs, meta descriptions), native engagement features (Notes, Polls, Chat), monetization tactics, and free-to-paid conversion strategies..

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 fabricioctelles/skills/substack-expert@v1.1
Exact content
mdr add fabricioctelles/skills/substack-expert@sha256:ccc71f803c2fb72a

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_34z5mlizlkqjkdxc.svg)](https://markdownregistry.com/a/art_34z5mlizlkqjkdxc)

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Versions

versioncommittedcommitsizeaudit
v1.1 latest2026-07-02 7f9526a 4,196 BA view · diff
v1.12026-06-27 5a02e56 4,195 BA view · diff
v1.12026-06-23 4ee738e 4,157 BA view · diff
v1.12026-04-11 8a7c73e 4,157 BA view · diff
v1.12026-03-05 6830a4a 4,158 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 (4196 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

fabricioctelles/skills · 87 stars · license Apache-2.0 · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_34z5mlizlkqjkdxc
GET https://markdownregistry.com/api/v1/resolve?ref=fabricioctelles/skills/substack-expert
GET https://markdownregistry.com/api/v1/blob/ccc71f803c2fb72a9e31307cecece67a70e9497985531154d800624731d84fdc

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