check

check is a command for Claude Code from airmcp-com/mcp-standards. It costs 0 tokens per session (271 once invoked), scanned A, a copy of check, MIT.

A verification command that checks files, directories, tasks, or agent results against measures such as correctness, security, performance, and documentation.

In plain words
What is it for?
Verify code or task output, adjust the acceptance threshold, attempt automatic fixes, and save results as JSON.
Why use it?
It helps catch failed work and quality problems before the result is accepted or used in continuous integration and delivery.

Command for Claude Code

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 commands/airmcp-com/mcp-standards/check
Clone the repo
git clone --depth 1 https://github.com/airmcp-com/mcp-standards

Made for: Claude Code.

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 check

README.md
[![agentmods](https://agentmods.dev/badge/commands/airmcp-com/mcp-standards/check.svg)](https://agentmods.dev/commands/airmcp-com/mcp-standards/check)
Your own site
<a href="https://agentmods.dev/commands/airmcp-com/mcp-standards/check"><img src="https://agentmods.dev/badge/commands/airmcp-com/mcp-standards/check.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 271 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00000 $0.00271
Opus 5 $0.00000 $0.00135
Sonnet 5 $0.00000 $0.00054
Haiku 4.5 $0.00000 $0.00027

Measured yesterday against content hash e1422b168293, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

check 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 yesterday.

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.

Origin

This is a copy

100% identical to check — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/commands/verify/check.md · 50 lines

What it actually says

verify check

Run verification checks on code, tasks, or agent outputs.

Usage

claude-flow verify check [options]

Options

  • --file <path> - Verify specific file
  • --task <id> - Verify task output
  • --directory <path> - Verify entire directory
  • --threshold <0-1> - Override default threshold (0.95)
  • --auto-fix - Attempt automatic fixes
  • --json - Output results as JSON
  • --verbose - Show detailed verification steps

Examples

# Basic file verification
claude-flow verify check --file src/app.js

# Verify with higher threshold
claude-flow verify check --file src/critical.js --threshold 0.99

# Verify and auto-fix issues
claude-flow verify check --directory src/ --auto-fix

# Get JSON output for CI/CD
claude-flow verify check --json > verification.json

Truth Scoring

The check command evaluates:

  • Code correctness
  • Best practices adherence
  • Security vulnerabilities
  • Performance implications
  • Documentation completeness

Exit Codes

  • 0 - Verification passed
  • 1 - Verification failed
  • 2 - Error during verification
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. yesterday First seen · 50 lines · 0 tokens per session scan A e1422b168293

Subscribe to this mod's changes

check is a command published in the GitHub repository airmcp-com/mcp-standards (3 stars, last pushed 9mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 271 tokens. A static security scan graded it A with 0 findings. It is 100% identical to check, differing in 0 lines, and is treated as a copy.