Verification Gate before Completion

VerifiedSafe

This skill enforces a verification gate before claiming tasks as 'done' or 'fixed'. It runs a checklist tailored to the workflow type (build, debug, refactor) with evidence requirements and verification types. Helps catch incomplete work and reduce assumptions by requiring concrete outputs or observations.

Sby Skills Guide Bot
DevelopmentIntermediate
6/2/2026
Claude Code
#verification#completion-checks#workflow-gates#quality-assurance#anti-premature-claim

Recommended for

Automated summary

This skill forces the agent to rigorously verify completion claims based on workflow type and stakes level.

Strengths

  • Reduces premature and unverified completion claims
  • Adapts to work type (build, debug, refactor) with specific checklists
  • Defines verification types and their sufficiency thresholds
  • Respects user autonomy through override clauses

Limitations

  • May slow down rapid iterations if applied strictly
  • Requires initial manual setup (fit score, must-not criteria)
  • Does not replace human judgment for complex cases
When to use it

Use this skill before declaring a task done to ensure that tangible evidence validates completion.

When not to use it

Avoid this skill for trivial changes (< 1 min rollback) or when the user explicitly asks to skip checks.

Security analysis

Safe
Quality score90/100

The skill is a verification checklist with no executable instructions; it uses Read-only tools and does not perform any dangerous operations. It safeguards against premature completion claims without evidence.

No concerns found

How this analysis is made

Examples

Build completion verification
I've finished implementing the user authentication feature. It's done.
Debug resolution claim
Fixed the null pointer exception in the payment module. The issue is resolved.
Refactor completion
The code refactoring is complete. All existing tests pass and behavior is identical.

name: gate description: Verification before completion claims. Use when about to say "done", "fixed", or "complete". Runs checklist by workflow type with evidence requirements. model: haiku allowed-tools: Read

gate

Verify before claiming completion.

Trigger

Before claiming: "done", "fixed", "complete", "working", "ready"


Pre-Work Gate (Before Starting)

Run before substantial work begins. Blocks execution if missing.

□ Verification method locked (not "assumption")
  → What type: execution output / observation / measurement?
  → What evidence will you show?

□ At least 2 "must NOT" criteria exist
  → What should this NOT do?
  → What scope should NOT expand?

□ Fit score determined workflow shape
  → <25: BLOCKED - clarify first
  → 25-29: Colleague-shaped (iterate each step)
  → 30-39: Tool-with-review (checkpoint major steps)
  → 40+: Tool-shaped (milestones only)

If any missing: STOP. Complete before proceeding.


Post-Work Gate (Before Claiming Done)

Workflow A: Build

□ Feature executes without errors (show output)
□ Edge cases tested (empty, null, boundary)
□ Rollback tested if Type 2B/1
□ Dependencies verified

Workflow B: Debug

□ Root cause identified with evidence
□ Fix tested and resolves symptom
□ Prevention added (test/automation/guard)
□ Related bugs checked (same class)

Workflow C: Refactor

□ Existing tests pass unchanged
□ Behavior identical (output comparison)
□ Deletion complete (no orphans)
□ No new abstraction without justification

Verification Types

| Type | Description | Sufficient for SHIP? | |------|-------------|---------------------| | execution output | Ran command, showed result | ✓ Yes | | observation | Screenshot, debugger session | ✓ Yes | | measurement | Metrics, benchmark data | ✓ Yes | | reasoned inference | Logic-based conclusion | ⚠️ Flag, don't block | | code review | Inspection only | ⚠️ Weak | | assumption | Not verified | ⚠️ Flag with warning |

Default: Require execution output, observation, or measurement before completion claims.

Boundary

Gates advise, never prevent. User owns their work.

  • If user says "I'm confident" → flag concern, proceed
  • If user says "skip gates" → proceed without verification demands
  • Never invalidate user's assessment of their own work

Gate exists to surface risk, not to block legitimate intuition.

Verification Plan

Before claiming completion, define how you'll verify:

| Verification Type | Evidence Required | Time Cost | |-------------------|-------------------|-----------| | Execution output | Command output, test results | < 1 min | | Observation | Screenshot, debugger inspection | 1-5 min | | Measurement | Metrics, benchmarks, profiling | 5-15 min | | Code review | Manual inspection only | Variable | | Assumption | No verification | 0 (blocks SHIP) |

Verification Requirements by Stakes

| Stakes | Minimum Verification | |--------|---------------------| | High | Execution output + Observation | | Medium | Execution output | | Low | Code review acceptable |

Anti-Footgun Rules

  • Never claim "done" with only assumptions
  • "It compiles" is not verification
  • "Tests pass" requires showing test output
  • If verification would take > 15 min, that's a smell (task too big)

Anti-Patterns

| Claim | Problem | Required | | -------------------------- | --------------- | ------------- | | "Should work" | Speculation | Actual output | | "Looks good" | No verification | Test results | | "Fixed the issue" | No proof | Before/after | | "I think this resolves it" | No confidence % | X-Y% + basis |

Incomplete Work

When blocked, state:

  • What's done (with evidence)
  • What's blocking (specific)
  • What's remaining

Type 2A Exception

Trivial changes (< 1 min rollback): completion allowed without full gate. Document undo command.

Common Rationalizations (All Wrong)

| Thought | Reality | |---------|---------| | "The tests passed" | Tests ≠ verification. Did you run the ACTUAL command? | | "It should work" | "Should" = assumption. Show evidence. | | "I already checked" | When? Show the output. | | "The user is waiting" | Rushed verification = rework later. | | "It's a simple change" | Simple changes break production too. | | "I'm pretty sure it works" | Pretty sure ≠ evidence. Run it. |

From the file to a first result

The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.

View the source and supporting files

This download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.

1. Download the file

Download SKILL.md

From the root of a test project, save the file as .skill-downloads/verification-gate-before-completion-mma3jrnk/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.

Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.

mkdir -p '.skill-downloads/verification-gate-before-completion-mma3jrnk' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/verification-gate-before-completion-mma3jrnk/download' --output '.skill-downloads/verification-gate-before-completion-mma3jrnk/SKILL.md.part' && mv '.skill-downloads/verification-gate-before-completion-mma3jrnk/SKILL.md.part' '.skill-downloads/verification-gate-before-completion-mma3jrnk/SKILL.md'

2. Check prerequisites

Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.

Tools declared by the author (check availability in your agent): Read

No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.

3. Load the skill

After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.

Claude Code
test -f '.skill-downloads/verification-gate-before-completion-mma3jrnk/SKILL.md' && test -s '.skill-downloads/verification-gate-before-completion-mma3jrnk/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/gate' && cp -R '.skill-downloads/verification-gate-before-completion-mma3jrnk' '.claude/skills/gate'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/verification-gate-before-completion-mma3jrnk'

openskills read 'verification-gate-before-completion-mma3jrnk'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:

Read .skill-downloads/verification-gate-before-completion-mma3jrnk/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

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