verification-before-completion

verification-before-completion is a skill for Claude Code, Codex from rileyhilliard/agentrc. It costs 35 tokens per session (853 once invoked), scanned A, original, MIT.

A checklist-based practice of running fresh verification commands before saying that coding work is complete or fixed. Verification means checking actual command output, exit codes, and failure counts.

In plain words
What is it for?
Use it before claiming that tests pass, a build succeeds, a linter is clean, a bug is fixed, or a task is complete.
Why use it?
A change can look correct while tests or builds still fail. Requiring direct evidence prevents unsupported claims that a bug is fixed or a feature works.

Skill for Claude CodeCodex

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.

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

Made for: Claude Code, Codex.

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/rileyhilliard/agentrc/verification-before-completion.svg)](https://agentmods.dev/skills/rileyhilliard/agentrc/verification-before-completion)
Your own site
<a href="https://agentmods.dev/skills/rileyhilliard/agentrc/verification-before-completion"><img src="https://agentmods.dev/badge/skills/rileyhilliard/agentrc/verification-before-completion.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 853 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00035 $0.00853
Opus 5 $0.00017 $0.00426
Sonnet 5 $0.00007 $0.00171
Haiku 4.5 $0.00003 $0.00085

Measured 5d ago against content hash d17db85a4dc1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, 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 5d 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.

.agentrc/skills/verification-before-completion/SKILL.md · 108 lines

How it starts

The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Verification Before Completion

Core Principle: No completion claims without fresh verification evidence.

The Verification Gate

BEFORE any claim of success, completion, or satisfaction:

Copy this checklist and track your progress:

Verification Checklist:
- [ ] IDENTIFY: What command proves this claim?
- [ ] RUN: Execute the verification command (fresh, complete)
- [ ] READ: Check full output, exit code, failure counts
- [ ] VERIFY: Does output confirm the claim?
  - If NO → State actual status with evidence
  - If YES → State claim WITH evidence
  1. IDENTIFY - What command proves this claim?
  2. RUN - Execute the full verification command (fresh, complete)
  3. READ - Check full output, exit code, failure counts
  4. VERIFY - Does output confirm the claim?
    • NO → State actual status with evidence
    • YES → State claim WITH evidence from step 2-3

Skip any step = invalid claim.

When This Applies

ALWAYS before:

  • Claiming "tests pass", "build succeeds", "linter clean", "bug fixed"
  • Expressing satisfaction ("Great!", "Done!", "Perfect!")
  • Using qualifiers ("should work", "probably fixed", "seems to")
  • Committing, creating PRs, marking tasks complete
  • Marking a multi-file implementation as complete (dispatch ce:code-reviewer agent)
  • Moving to next task or delegating work
  • ANY statement implying success or completion

Common Verification Requirements

Claim Required Evidence Not Sufficient
Tests pass yarn test output: 0 failures Previous run, "looks correct"
Build succeeds Build command: exit 0 Linter clean, "should work"
Bug fixed Test reproducing bug: now passes Code changed, assumed fix
Linter clean Linter output: 0 errors Partial check, spot test
Regression test works Red→Green cycle verified Test passes once
Agent task complete VCS diff shows expected changes Agent reports "success"
Work is complete Code review via ce:code-reviewer with no unresolved Critical issues Self-review, "looks good to me"

Read the full file on GitHub · 108 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. 5d ago First seen · 108 lines · 35 tokens per session scan A d17db85a4dc1

Subscribe to this mod's changes

verification-before-completion is a skill published in the GitHub repository rileyhilliard/agentrc (3 stars, last pushed 6mo ago), licensed MIT. It adds 35 tokens to every session and 853 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 2026-08-31.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

local-ai-agents

Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…

microsoft/ai-agents-for-beginners · 200 tokens

next-cache-components-adoption

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…

vercel/next.js · 95 tokens

next-cache-components-optimizer

Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to green, one verified route at a time; the shipped test then…

vercel/next.js · 170 tokens

next-partial-prefetching-adoption

Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the partialPrefetching flag, opt routes in with export const prefetch = 'partial', audit Link prefetch={true} behavior, preserve existing prefetched UI with…

vercel/next.js · 103 tokens

chronicle

Analyze Copilot session history for standup reports, usage tips, session search, and session reindexing. Use when the user asks for a standup, daily summary, usage tips, workflow recommendations, wants to search or find past sessions by keyword/file/PR, wants to reindex their session store, or asks about deleting…

microsoft/vscode · 72 tokens