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Verification Before Completion

  • 159k installs
  • 262k repo stars
  • Updated July 24, 2026
  • obra/superpowers

Verification-before-completion is a workflow skill that gates completion claims on fresh verification evidence

About

Enforces evidence-based completion claims before commits or PRs. Requires running verification commands and confirming output before making any success assertions. Eliminates unverified status claims by gating completion on fresh evidence.

  • Evidence before assertions: run verification commands fresh before claiming completion
  • Gate function: identify proof command, execute full output, verify result claims
  • Prevents shipping unverified work: tests pass, linter clean, build succeeds all need proof

Verification Before Completion by the numbers

  • 158,622 all-time installs (skills.sh)
  • +8,845 installs in the week ending Jul 28, 2026 (Skillselion tracking)
  • Ranked #8 of 1,382 Code Review & Quality skills by installs in the Skillselion catalog
  • Security screen: LOW risk (skills.sh audit)
  • Data as of Jul 28, 2026 (Skillselion catalog sync)
At a glance

verification-before-completion capabilities & compatibility

Capabilities
test verification · linter checking · build validation · bug confirmation
Use cases
testing · code review
From the docs

What verification-before-completion says it does

Claiming work is complete without verification is dishonesty, not efficiency.
SKILL.md
npx skills add https://github.com/obra/superpowers --skill verification-before-completion

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Listed on Skillselion
Installs159k
repo stars262k
Security audit3 / 3 scanners passed
Last updatedJuly 24, 2026
Repositoryobra/superpowers

How do agents prove work is done before committing?

Verify completion with fresh evidence before committing or creating pull requests

Who is it for?

Any project where false positives matter: production deploys, merged PRs, shipped features

Skip if: Early exploration before any completion claim is imminent, or tasks where the user explicitly wants a hypothesis without verification.

When should I use this skill?

The agent is about to claim work is complete, fixed, or passing, or to commit, push, or open a PR.

What you get

Fresh command output with exit codes, failure counts, and evidence-backed completion claims attached to commits or PRs.

  • Verification command output
  • Evidence-backed status claims

By the numbers

  • 5-step verification gate function before any completion claim
  • Common-failures table documents 7 claim types and insufficient shortcuts
  • References 24 recorded failure memories from unverified claims

Files

SKILL.mdMarkdownGitHub ↗

Verification Before Completion

Overview

Claiming work is complete without verification is dishonesty, not efficiency.

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

ClaimRequiresNot Sufficient
Tests passTest command output: 0 failuresPrevious run, "should pass"
Linter cleanLinter output: 0 errorsPartial check, extrapolation
Build succeedsBuild command: exit 0Linter passing, logs look good
Bug fixedTest original symptom: passesCode changed, assumed fixed
Regression test worksRed-green cycle verifiedTest passes once
Agent completedVCS diff shows changesAgent reports "success"
Requirements metLine-by-line checklistTests 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

ExcuseReality
"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

Why This Matters

From 24 failure memories:

  • your human partner said "I don't believe you" - trust broken
  • Undefined functions shipped - would crash
  • Missing requirements shipped - incomplete features
  • Time wasted on false completion → redirect → rework
  • Violates: "Honesty is a core value. If you lie, you'll be replaced."

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

The Bottom Line

No shortcuts for verification.

Run the command. Read the output. THEN claim the result.

This is non-negotiable.

Related skills

Forks & variants (16)

Verification Before Completion has 16 known copies in the catalog totaling 563 installs. They canonicalize to this original listing.

How it compares

Pick verification-before-completion as a universal pre-claim gate; pair with test-driven-development when defining what tests must exist before verification runs.

FAQ

What is the verification-before-completion iron law?

verification-before-completion states NO COMPLETION CLAIMS WITHOUT FRESH VERIFICATION EVIDENCE. If the agent has not run the proving command in the same message, it cannot claim tests pass, builds succeed, or work is complete.

Does a previous test run count as verification?

verification-before-completion explicitly rejects previous runs, partial checks, linter-only success for build claims, and trusting subagent success reports. The full verification command must execute fresh with output read in the current message.

When must verification-before-completion apply?

verification-before-completion applies before any success or completion claim, expressions of satisfaction, commits, PR creation, task completion, moving to the next task, or delegating work—covering exact phrases, paraphrases, and implications of correctness.

Is Verification Before Completion safe to install?

skills.sh reports 3 of 3 security scanners passed. Review the Security Audits panel on this page before installing in production.

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