arena SKILL.md skillA
arena from michael-denyer/pstack-claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add michael-denyer/pstack-claude/arena@git:20261020.d56fdb0Pins git:20261020.d56fdb0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- michael-denyer/pstack-claude
- Path
plugins/pstack/skills/arena/SKILL.md- Versions recorded
- 17
- Latest version
- git:20261020.d56fdb0, committed Oct 20, 2026
- First version recorded
- Aug 27, 2026
- Size
- 5,991 bytes
- Repository stars
- 3,263
- License
- MIT
Spawn N parallel candidates at the same task, pick a base, graft the strongest parts of the losers into it. Use for /arena, 'arena this', 'throw it in the arena', or when one attempt at a non-trivial artifact would lock in the wrong shape.
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
# Arena On Codex, read the [platform mapping](../poteto-mode/references/codex-tools.md), including its per-skill notes, before following this skill. On GitHub Copilot, read the [platform mapping](../poteto-mode/references/copilot-tools.md), including its per-skill notes, before following this skill. On Muse, read the [platform mapping](../poteto-mode/references/muse-tools.md), including its per-skill notes, before following this skill. Open a todolist with one entry per phase (Frame, Fan out, Cross-judge, Pick, Graft, Verify) before launching anything. ## Phase A: Frame Every candidate gets the same prompt, so the prompt is the contract. 1. State the artifact each candidate is producing. 2. Derive the rubric, 3-6 concrete gradeable criteria for what success looks like on *this* task. It is the picker's tool in Phase D. Candidates only see the task. …
Read the whole file at its exact version.
How to install
mdr add michael-denyer/pstack-claude/arena@sha256:81327dd64a4e8482The line at the top of this page pins the label git:20261020.d56fdb0, 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_ymxs5otlwqfihbmm)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 17 versions of this file, between Aug 27, 2026 and Oct 20, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261020.d56fdb0 latest | 2026-10-20 | d56fdb0 | 5,991 B | A | view · diff |
| git:20261020.88f6d39 | 2026-10-20 | 88f6d39 | 5,751 B | A | view · diff |
| git:20261015.1dba27e | 2026-10-15 | 1dba27e | 6,000 B | A | view · diff |
| git:20261013.058a348 | 2026-10-13 | 058a348 | 5,894 B | A | view · diff |
| git:20261008.a2f7d91 | 2026-10-08 | a2f7d91 | 6,552 B | A | view · diff |
| git:20261005.8d3aa57 | 2026-10-05 | 8d3aa57 | 6,534 B | A | view · diff |
| git:20260925.c02fd49 | 2026-09-25 | c02fd49 | 6,381 B | A | view · diff |
| git:20260925.9f3a2ca | 2026-09-25 | 9f3a2ca | 6,355 B | A | view · diff |
| git:20260923.1924a06 | 2026-09-23 | 1924a06 | 5,347 B | A | view · diff |
| git:20260923.4a3ef20 | 2026-09-23 | 4a3ef20 | 5,409 B | A | view · diff |
| git:20260922.55853d9 | 2026-09-22 | 55853d9 | 4,931 B | A | view · diff |
| git:20260913.45f7683 | 2026-09-13 | 45f7683 | 4,927 B | A | view · diff |
| git:20260907.ebb8c27 | 2026-09-07 | ebb8c27 | 4,923 B | A | view · diff |
| git:20260907.3df207b | 2026-09-07 | 3df207b | 5,682 B | A | view · diff |
| git:20260907.09f3a50 | 2026-09-07 | 09f3a50 | 5,540 B | A | view · diff |
| git:20260901.f8c37b8 | 2026-09-01 | f8c37b8 | 5,833 B | A | view · diff |
| git:20260827.c2ade4b | 2026-08-27 | c2ade4b | 5,863 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 (5991 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
michael-denyer/pstack-claude · 3,263 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ymxs5otlwqfihbmm GET https://markdownregistry.com/api/v1/resolve?ref=michael-denyer/pstack-claude/arena GET https://markdownregistry.com/api/v1/blob/81327dd64a4e8482f29ee45ea7028e954bac980811ad4dd30652bdbcdc04eba3
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.
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