tonydzi/second-brain-starter-kit · skills/x-post/SKILL.md

x-post skillA

x-post is agent-read markdown (skill) from tonydzi/second-brain-starter-kit: Publish a vetted post to an X (Twitter) account through the owner's real logged-in Chrome tab, rate-guarded and draft-first. Counts length the way X does, treating every link as 23 characters, and refuses over-limit text instead of silently truncating. Triggers: "/x-post", "tweet this", "post to X"..

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 tonydzi/second-brain-starter-kit/x-post@git:20260908.2ec1bf8
Exact content
mdr add tonydzi/second-brain-starter-kit/x-post@sha256:86f7e93b71463ec1

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_vknmaxyg3ljo75cb.svg)](https://markdownregistry.com/a/art_vknmaxyg3ljo75cb)

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Versions

versioncommittedcommitsizeaudit
git:20260908.2ec1bf8 latest2026-09-08 2ec1bf8 4,190 BA view · diff
git:20260814.b99e55d2026-08-14 b99e55d 3,783 BA view · diff
git:20260814.06fa9062026-08-14 06fa906 4,618 BA view · diff
git:20260814.5023d8c2026-08-14 5023d8c 3,923 BA view · diff
git:20260814.44e61cf2026-08-14 44e61cf 4,345 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 (4190 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

tonydzi/second-brain-starter-kit · 6 stars · license MIT · pushed 2026-09-15 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_vknmaxyg3ljo75cb
GET https://markdownregistry.com/api/v1/resolve?ref=tonydzi/second-brain-starter-kit/x-post
GET https://markdownregistry.com/api/v1/blob/86f7e93b71463ec1542b168d457e08a40d93fbb371059d2be7a172bd02edf5e9

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