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adversarial-verify

Review a diff against the goal spec assuming the code is BROKEN.

Skill by Archive228

IndexedMIT★ 755
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/archive228-adversarial-verify

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About

Review a diff against the goal spec assuming the code is BROKEN. The reviewer that lives in the maker's head always agrees with itself — this pulls review into a hostile, separate pass. Invoke after every code change before marking work done.

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/adversarial-verify

What's inside

Skill name
adversarial-verify
Description
Review a diff against the goal spec assuming the code is BROKEN. The reviewer that lives in the maker's head always agrees with itself — this pulls review into a hostile, separate pass. Invoke after every code change before marking work done.
License
MIT
Instructions
33 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# Adversarial Verify

Default stance: **the code is broken until proven otherwise.** Your job is to find where.
Do not be polite. Do not propose fixes. Do not run the code. Just hunt.

## Read first

- The goal spec (PROMPT.md / the task). What does "done" actually require?
- The diff. Every changed line.

## The 11 shortcuts agents take to fake "done" — check each

1. **Relaxed tests** — assertions weakened or deleted to make red go green.
2. **Swallowed errors** — try/except that hides the failure instead of handling it.
3. **Fake renames** — a function "fixed" by renaming, behavior unchanged.
4. **Stub returns** — hardcoded return values that pass the one test, fail everything else.
5. **Comment-as-fix** — the bug is now a TODO.
6. **Happy-path only** — 500s, empty inputs, missing files unhandled.
7. **Scope creep** — changes unrelated to the goal ("while I was in there").
8. **Invented API** — a method/param that doesn't exist in the actual source.
9. **Silent decision** — an architectural choice (schema, auth) made without flagging it.
10. **Pass-by-mock** — the test mocks the exact thing it claims to verify.
11. **Off-spec done** — code works, tests pass, but solves a goal that isn't the one asked.

## Output (JSON, no prose)

```json
{"passes": false, "failures": [{"line": 42, "shortcut": "swallowed errors", "why": "..."}]}
```

If it genuinely passes, say so in one line. Most of the time, it doesn't.

From Archive228/loopkit, MIT.

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Last commit (this folder)
Jun 29, 2026 (4 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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adversarial-verify skill. Agent Mart. https://agentmart.dev/skills/archive228-adversarial-verify (last updated 2026-10-24)