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SKILL verified MIT Self-run

Reality Verification

skill-tzachbon-smart-ralph-reality-verification · by tzachbon

This skill should be used when the user asks to "verify a fix", "reproduce failure", "diagnose issue", "check BEFORE/AFTER state", "VF task", "reality check", "check test quality", "mock-only tests", or needs guidance on verifying fixes by reproducing failures before and after implementation, or detecting mock-heavy test anti-patterns.

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Install

$ agentstack add skill-tzachbon-smart-ralph-reality-verification

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • Prompt-injection patterns
  • Secret / credential exfiltration
  • Dangerous shell & filesystem operations
  • Untrusted network calls
  • Known-malicious package signatures

What it can access

  • Network access No
  • Filesystem access No
  • Shell / process execution No
  • Environment & secrets No
  • Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

Reality Verification

For fix goals: reproduce the failure BEFORE work, verify resolution AFTER.

Goal Detection

Classify user goals to determine if diagnosis is needed. See references/goal-detection-patterns.md for detailed patterns.

Quick reference:

  • Fix indicators: fix, repair, resolve, debug, patch, broken, failing, error, bug
  • Add indicators: add, create, build, implement, new
  • Conflict resolution: If both present, treat as Fix

Command Mapping

| Goal Keywords | Reproduction Command | |---------------|---------------------| | CI, pipeline | gh run view --log-failed | | test, tests | project test command | | type, typescript | pnpm check-types or tsc --noEmit | | lint | pnpm lint | | build | pnpm build | | E2E, UI | Playwright MCP browser tools | | API, endpoint | WebFetch tool |

For E2E/deployment verification, use MCP tools (Playwright MCP browser tools for UI, WebFetch tool for APIs).

BEFORE/AFTER Documentation

BEFORE State (Diagnosis)

Document in .progress.md under ## Reality Check (BEFORE):

## Reality Check (BEFORE)

**Goal type**: Fix
**Reproduction command**: `pnpm test`
**Failure observed**: Yes
**Output**:

FAIL src/auth.test.ts Expected: 200 Received: 401

**Timestamp**: 2026-01-16T10:30:00Z

AFTER State (Verification)

Document in .progress.md under ## Reality Check (AFTER):

## Reality Check (AFTER)

**Command**: `pnpm test`
**Result**: PASS
**Output**:

PASS src/auth.test.ts All tests passed

**Comparison**: BEFORE failed with 401, AFTER passes
**Verified**: Issue resolved

VF Task Format

Add as task 4.3 (after PR creation) for fix-type specs:

- [ ] 4.3 VF: Verify original issue resolved
  - **Do**:
    1. Read BEFORE state from .progress.md
    2. Re-run reproduction command: ``
    3. Compare output with BEFORE state
    4. Document AFTER state in .progress.md
  - **Verify**: `grep -q "Verified: Issue resolved" ./specs//.progress.md`
  - **Done when**: AFTER shows issue resolved, documented in .progress.md
  - **Commit**: `chore(): verify fix resolves original issue`

Test Quality Checks

When verifying test-related fixes, check for mock-only test anti-patterns. See references/mock-quality-checks.md for detailed patterns.

Quick reference red flags:

  • Mock declarations > 3x real assertions
  • Missing import of actual module under test
  • All assertions are mock interaction checks (toHaveBeenCalled)
  • No integration tests
  • Missing mock cleanup (afterEach)

Why This Matters

| Without | With | |---------|------| | "Fix CI" spec completes but CI still red | CI verified green before merge | | Tests "fixed" but original failure unknown | Before/after comparison proves fix | | Silent regressions | Explicit failure reproduction | | Manual verification required | Automated verification in workflow | | Tests pass but only test mocks | Tests verify real behavior, not mock behavior | | False sense of security from green tests | Confidence that tests catch real bugs |

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.