verification-before-completion

verification-before-completion is a skill for Claude Code from bostonaholic/rpikit. It costs 38 tokens per session (1,438 once invoked), scanned A, original, MIT.

A verification checklist for coding agents to follow before saying a change is complete, fixed, or passing.

In plain words
What is it for?
Use it when finishing implementations, bug fixes, builds, tests, or lint checks.
Why use it?
It prevents unsupported success claims by requiring fresh command results and a check of the complete output.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the rpikit plugin — 16 skills, 7 agents shipped together

Good fit Use it when finishing implementations, bug fixes, builds, tests, or lint checks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bostonaholic/rpikit/verification-before-completion
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add bostonaholic/rpikit --skill verification-before-completion
Clone the repo
git clone --depth 1 https://github.com/bostonaholic/rpikit

Made for: Claude Code.

Or install rpikit, the plugin that ships this one along with the rest of its 16 skills, 7 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for verification-before-completion

README.md
[![agentmods](https://agentmods.dev/badge/skills/bostonaholic/rpikit/verification-before-completion/github.svg)](https://agentmods.dev/skills/bostonaholic/rpikit/verification-before-completion)
Your own site
<a href="https://agentmods.dev/skills/bostonaholic/rpikit/verification-before-completion"><img src="https://agentmods.dev/badge/skills/bostonaholic/rpikit/verification-before-completion/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for verification-before-completion

Your own site · 80×15
<a href="https://agentmods.dev/skills/bostonaholic/rpikit/verification-before-completion"><img src="https://agentmods.dev/badge/skills/bostonaholic/rpikit/verification-before-completion.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,438 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 4 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Anti-Refusal · line 280
    Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.
    Fix: Remove instructions that suppress warnings, disclaimers, or ethical commentary. Let the agent surface safety-relevant caveats to the user.
  • medium Excessive Agency · line 15
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 170
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 270
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00038 $0.01438
Opus 5 $0.00019 $0.00719
Sonnet 5 $0.00008 $0.00288
Haiku 4.5 $0.00004 $0.00144

Measured 10d ago against content hash 467e9d7986ea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

verification-before-completion scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/verification-before-completion/SKILL.md · 282 lines

How it starts

The opening of the file, as written. The whole thing — 282 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Verification Before Completion

Evidence before claims, always. No completion claims without fresh verification.

Purpose

Claiming work is done without verification breaks trust and wastes time. This skill enforces running verification commands and confirming output before any success claim. "It should work" is not verification.

The Iron Law

NO COMPLETION CLAIMS WITHOUT FRESH VERIFICATION EVIDENCE.

Every claim must be backed by evidence you just observed. Not evidence from earlier. Not evidence you expect. Evidence you just saw.

The Five-Step Gate

Before any completion claim, complete these steps:

Step 1: Identify

What command proves your claim?

Claim: "Tests pass"
Command: npm test (or project's test command)

Claim: "Build succeeds"
Command: npm run build (or project's build command)

Claim: "Lint is clean"
Command: npm run lint (or project's lint command)

Claim: "Bug is fixed"
Command: The reproduction steps that previously failed

Step 2: Run

Execute the command freshly. Not from cache. Not from memory.

Run the command NOW.
Wait for it to complete.
Do not proceed until finished.

Step 3: Read

Read the COMPLETE output.

- Exit code (0 = success)
- All output lines, not just the last one
- Any warnings (not just errors)
- Summary statistics if provided

Step 4: Verify

Confirm the output supports your claim.

Claim: "Tests pass"
Verify: Exit code 0, "X tests passed", no failures

Claim: "Build succeeds"
Verify: Exit code 0, output files created, no errors

Claim: "Bug is fixed"
Verify: Previous failure no longer occurs

Step 5: Claim

Only NOW make your completion claim.

"Tests pass" - after seeing test output showing success
"Build succeeds" - after seeing build complete without errors
"Implementation complete" - after all verifications pass

Common Failure Modes

Tests

What to run: Project test command
What to verify:
- Exit code 0
- All tests pass (not just "some tests ran")
- No skipped tests (unless intentional)
- No test warnings

Read the full file on GitHub · 282 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 282 lines · 38 tokens per session scan A 467e9d7986ea

Subscribe to this mod's changes

verification-before-completion is a skill published in the GitHub repository bostonaholic/rpikit (20 stars, last pushed 2d ago), licensed MIT. It adds 38 tokens to every session and 1,438 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.