
Verification Before Completion
FreeEnsure claims of completion are backed by evidence.
Free · Opens the source repo
What Verification Before Completion does
The Verification Before Completion skill emphasizes the importance of validating work before making any claims of completion or correctness. It operates on the fundamental principle that no assertion of success should be made without fresh verification evidence. This skill is particularly useful for developers and teams who want to maintain high standards of quality and accountability in their work processes. By following a structured approach to verification, users can minimize errors and enhance the reliability of their claims.
The skill outlines a clear process that includes identifying the necessary verification commands, executing them fully, and analyzing the output before making any claims. It encourages a disciplined mindset where every claim is substantiated by concrete evidence, effectively reducing the risk of miscommunication and misunderstandings within teams. This is especially crucial in collaborative environments where multiple stakeholders rely on accurate reporting of progress and status.
In addition to preventing premature claims, the skill also highlights common pitfalls and red flags that can lead to verification failures. By recognizing these patterns and adhering to the outlined rules, users can foster a culture of thoroughness and precision. This approach not only improves individual accountability but also contributes to the overall integrity of the development process, ensuring that all team members are aligned and informed.
Ultimately, Verification Before Completion is designed for developers, QA engineers, and project managers who prioritize quality assurance and wish to establish a rigorous verification routine. By integrating this skill into their workflow, teams can enhance their operational effectiveness and reduce the likelihood of regressions or undetected issues in their code.
When to use it
Use this skill whenever you are about to claim that work is complete, fixed, or passing, particularly before committing or creating pull requests.
When not to use it
This skill may not be necessary for informal projects or when working in environments where verification is already inherently enforced or understood.
What you can build with it
Before Committing Code
Always run verification commands to confirm that the code is functioning as expected before making a commit.
Creating Pull Requests
Use this skill to ensure that all tests pass and that you have evidence to support your claims of completion before submitting a PR.
Quality Assurance Checks
Implement this skill in QA processes to ensure that all assertions about code quality are substantiated by actual test results.
How to install Verification Before Completion
View source1. Install with the skills CLI
npx skills add obra/superpowers/verification-before-completion --agent claude-code2. Or install it manually
Download the skill folder and drop it into ~/.claude/skills/ for all projects, or .claude/skills/ to scope it to one repo. Restart Claude Code so it picks up the new skill.
Anthropic's agentic coding CLI, and the reference implementation of Agent Skills. Drop a skill folder into ~/.claude/skills and Claude Code loads it automatically whenever a task matches the skill's description. Claude Code docs
Inside SKILL.md
Written by obraVerification Before Completion
Overview
Core principle: Evidence before claims, always.
Violating the letter of this rule is violating the spirit of this rule.
The Iron Law
NO COMPLETION CLAIMS WITHOUT FRESH VERIFICATION EVIDENCE
If you haven't run the verification command in this message, you cannot claim it passes.
The Gate Function
BEFORE claiming any status or expressing satisfaction:
1. IDENTIFY: What command proves this claim?
2. RUN: Execute the FULL command (fresh, complete)
3. READ: Full output, check exit code, count failures
4. VERIFY: Does output confirm the claim?
- If NO: State actual status with evidence
- If YES: State claim WITH evidence
5. ONLY THEN: Make the claim
Skip any step = lying, not verifying
Common Failures
| Claim | Requires | Not Sufficient |
|---|---|---|
| Tests pass | Test command output: 0 failures | Previous run, "should pass" |
| Linter clean | Linter output: 0 errors | Partial check, extrapolation |
| Build succeeds | Build command: exit 0 | Linter passing, logs look good |
| Bug fixed | Test original symptom: passes | Code changed, assumed fixed |
| Regression test works | Red-green cycle verified | Test passes once |
| Agent completed | VCS diff shows changes | Agent reports "success" |
| Requirements met | Line-by-line checklist | Tests passing |
Red Flags - STOP
- Using "should", "probably", "seems to"
- Expressing satisfaction before verification ("Great!", "Perfect!", "Done!", etc.)
- About to commit/push/PR without verification
- Trusting agent success reports
- Relying on partial verification
- Thinking "just this once"
- Tired and wanting work over
- ANY wording implying success without having run verification
Rationalization Prevention
| Excuse | Reality |
|---|---|
| "Should work now" | RUN the verification |
| "I'm confident" | Confidence ≠ evidence |
| "Just this once" | No exceptions |
| "Linter passed" | Linter ≠ compiler |
| "Agent said success" | Verify independently |
| "I'm tired" | Exhaustion ≠ excuse |
| "Partial check is enough" | Partial proves nothing |
| "Different words so rule doesn't apply" | Spirit over letter |
Key Patterns
Tests:
✅ [Run test command] [See: 34/34 pass] "All tests pass"
❌ "Should pass now" / "Looks correct"
Regression tests (TDD Red-Green):
✅ Write → Run (pass) → Revert fix → Run (MUST FAIL) → Restore → Run (pass)
❌ "I've written a regression test" (without red-green verification)
Build:
✅ [Run build] [See: exit 0] "Build passes"
❌ "Linter passed" (linter doesn't check compilation)
Requirements:
✅ Re-read plan → Create checklist → Verify each → Report gaps or completion
❌ "Tests pass, phase complete"
Agent delegation:
✅ Agent reports success → Check VCS diff → Verify changes → Report actual state
❌ Trust agent report
When To Apply
ALWAYS before:
- ANY variation of success/completion claims
- ANY expression of satisfaction
- ANY positive statement about work state
- Committing, PR creation, task completion
- Moving to next task
- Delegating to agents
Rule applies to:
- Exact phrases
- Paraphrases and synonyms
- Implications of success
- ANY communication suggesting completion/correctness
Frequently asked questions about Verification Before Completion
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