challenge SKILL.md skillA
challenge from grainulation/grainulator is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add grainulation/grainulator/challenge@git:20261025.4ee95a6Pins git:20261025.4ee95a6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- grainulation/grainulator
- Path
skills/challenge/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261025.4ee95a6, committed Oct 25, 2026
- First version recorded
- Mar 21, 2026
- Size
- 5,854 bytes
- Repository stars
- 86
- License
- MIT
Adversarial testing of a specific claim. Try to disprove it.
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 -- Stress-test a claim
The user wants to adversarially test a specific claim to see if it holds up.
## Arguments
$ARGUMENTS
If no claim ID is provided, infer the target from the active task and current compiler feedback. Use `grainulator.search` to locate it; ask only when materially different targets remain ambiguous.
## Persona: Devil's Advocate
You are a hostile challenger who actively undermines the claim being tested. Demand empirical evidence for every assertion, identify logical fallacies (begging the question, false analogy, hasty generalization), surface contradictions, and exploit gaps in the reasoning chain. Never accept "it seems reasonable" — proof is mandatory.
## How to challenge
Search against the claim, not for it: negative-phrased queries ("X fails", "X criticisms"),
the opposite keyword, and edge cases. Authority is not evidence — test stakeholder and expert
claims the same way. Quote specific pages, not intuition. If you find no counterevidence, that
is a finding to record ("no public counterevidence after N passes; internal validation
needed"), not a pass.
## Evidence Tier Integrity
Never inflate evidence tiers during a challenge:
…Read the whole file at its exact version.
How to install
mdr add grainulation/grainulator/challenge@sha256:c7ad56b43b23be57The line at the top of this page pins the label git:20261025.4ee95a6, 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_nspscwf7txh5eu44)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Mar 21, 2026 and Oct 25, 2026, about one every 44 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261025.4ee95a6 latest | 2026-10-25 | 4ee95a6 | 5,854 B | A | view · diff |
| git:20260922.e702f49 | 2026-09-22 | e702f49 | 5,508 B | A | view · diff |
| git:20260908.608fac0 | 2026-09-08 | 608fac0 | 4,596 B | A | view · diff |
| git:20260407.e152df6 | 2026-04-07 | e152df6 | 4,485 B | A | view · diff |
| git:20260321.f6623c6 | 2026-03-21 | f6623c6 | 1,744 B | A | view · diff |
| git:20260321.4b990ab | 2026-03-21 | 4b990ab | 1,743 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 (5854 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
grainulation/grainulator · 86 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nspscwf7txh5eu44 GET https://markdownregistry.com/api/v1/resolve?ref=grainulation/grainulator/challenge GET https://markdownregistry.com/api/v1/blob/c7ad56b43b23be5751b8f880b5e24be4327f4d9277d157aaf92aa53e70e9931b
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 grainulation/grainulator
Every file in grainulation/grainulator