martineserios/thebrana · system/skills/challenge/SKILL.md

challenge skillA

challenge is agent-read markdown (skill) from martineserios/thebrana: Adversarial review — Fable 5 stress-tests reasoning, Gemini checks knowledge. Use before plan or architecture decisions..

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 martineserios/thebrana/challenge@git:20260829.ab57a27
Exact content
mdr add martineserios/thebrana/challenge@sha256:ce32194df2568a3d

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_euhvnfzokdylnjvw.svg)](https://markdownregistry.com/a/art_euhvnfzokdylnjvw)

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Versions

versioncommittedcommitsizeaudit
git:20260829.ab57a27 latest2026-08-29 ab57a27 24,854 BA view · diff
git:20260824.49aeb9d2026-08-24 49aeb9d 24,885 BA view · diff
git:20260817.cb582002026-08-17 cb58200 24,641 BA view · diff
git:20260620.ec0f9612026-06-20 ec0f961 23,813 BA view · diff
git:20260620.26b407c2026-06-20 26b407c 23,809 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 (24854 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

martineserios/thebrana · 3 stars · license MIT · pushed 2026-09-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_euhvnfzokdylnjvw
GET https://markdownregistry.com/api/v1/resolve?ref=martineserios/thebrana/challenge
GET https://markdownregistry.com/api/v1/blob/ce32194df2568a3da2f2bd59380e8a1c567092e8bec486cacc577a8e808de850

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