challenge SKILL.md skillA
challenge from martineserios/thebrana is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add martineserios/thebrana/challenge@git:20261007.62052f3Pins git:20261007.62052f3 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- martineserios/thebrana
- Path
system/skills/challenge/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261007.62052f3, committed Oct 7, 2026
- First version recorded
- Jun 20, 2026
- Size
- 25,523 bytes
- Repository stars
- 3
- License
- MIT
Adversarial review — Fable 5 stress-tests reasoning, Gemini checks knowledge. Use before plan or architecture decisions.
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
# Challenge Adversarial review with two modes. **Standard:** three native challenger subagents (convergent · systems · critical) stress-test reasoning, Gemini retrieves documented constraints — all run independently, Claude merges and judges. **Council (`--council`):** Four parallel perspective agents (devil's advocate, optimist, pragmatist, operator) plus Gemini — Claude synthesizes across all five. **Deep (`--deep`, or auto on high-stakes):** any mode, plus an adversarial **verification stage** — every merged finding is independently re-attacked by N skeptics (`verify-findings` workflow), so plausible-but-wrong findings are dropped to FALSE_POSITIVE and survivors get a calibrated severity before you see them. All agents are native subagents on the subscription — no ruflo, no API key. 1. **Gather context** about what to challenge: - If `$ARGUMENTS` provided, use it as the description of what to challenge. - If `$ARGUMENTS` contains `--council`: strip `--council` from the target description, activate **council mode** — step 4a spawns 4 parallel perspective agents instead of one Opus agent. All other steps unchanged. …
Read the whole file at its exact version.
How to install
mdr add martineserios/thebrana/challenge@sha256:ca01709863155257The line at the top of this page pins the label git:20261007.62052f3, 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.
[](https://markdownregistry.com/a/art_euhvnfzokdylnjvw)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jun 20, 2026 and Oct 7, 2026, about one every 22 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261007.62052f3 latest | 2026-10-07 | 62052f3 | 25,523 B | A | view · diff |
| git:20260829.ab57a27 | 2026-08-29 | ab57a27 | 24,854 B | A | view · diff |
| git:20260824.49aeb9d | 2026-08-24 | 49aeb9d | 24,885 B | A | view · diff |
| git:20260817.cb58200 | 2026-08-17 | cb58200 | 24,641 B | A | view · diff |
| git:20260620.ec0f961 | 2026-06-20 | ec0f961 | 23,813 B | A | view · diff |
| git:20260620.26b407c | 2026-06-20 | 26b407c | 23,809 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (25523 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
martineserios/thebrana · 3 stars · license MIT · pushed 2026-11-01 · 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/ca01709863155257a08f60d19d32fad153e4f7016f3ae0e83812daec879899e2
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.
More from martineserios/thebrana
Every file in martineserios/thebrana