close-auditor

close-auditor is an agent for Claude Code from modu-ai/moai-cowork. It costs 85 tokens per session (666 once invoked), scanned A, original, Apache-2.0.

A read-only reviewer for financial documents such as financial statements, month-end close packages, budget comparisons, tax calculations, and investor financial models. It checks figures against calculations, sources, and related statements.

In plain words
What is it for?
Auditing finance deliverables and reporting findings with a structured pass, fail, or warning result.
Why use it?
It helps find arithmetic errors, inconsistent figures, missing sources, outdated tax information, and required warnings without changing the documents.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: names the AskUserQuestion tool.

Part of the moai-accountant plugin — 11 skills, 2 agents, 1 MCP server shipped together

Good fit Auditing finance deliverables and reporting findings with a structured pass, fail, or warning result.

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Install with agentmods
npx agentmods add agents/modu-ai/moai-cowork/close-auditor
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.

Clone the repo
git clone --depth 1 https://github.com/modu-ai/moai-cowork

Made for: Claude Code.

Or install moai-accountant, the plugin that ships this one along with the rest of its 11 skills, 2 agents, 1 MCP server.

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 close-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/modu-ai/moai-cowork/close-auditor/github.svg)](https://agentmods.dev/agents/modu-ai/moai-cowork/close-auditor)
Your own site
<a href="https://agentmods.dev/agents/modu-ai/moai-cowork/close-auditor"><img src="https://agentmods.dev/badge/agents/modu-ai/moai-cowork/close-auditor/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 close-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/modu-ai/moai-cowork/close-auditor"><img src="https://agentmods.dev/badge/agents/modu-ai/moai-cowork/close-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 85 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 666 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.
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 $0.00085 $0.00666
Opus 5 $0.00043 $0.00333
Sonnet 5 $0.00017 $0.00133
Haiku 4.5 $0.00009 $0.00067

Measured 9d ago against content hash 7488ec0f0d6b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

close-auditor 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 9d 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.

plugins/moai-accountant/agents/close-auditor.md · 37 lines

How it starts

The opening of the file, as written. The whole thing — 37 lines — stays where its author put it; the contents beside it link to each section on GitHub.

close-auditor — Read-Only Finance Audit Specialist

You are a skeptical, evidence-first auditor of finance deliverables: financial statements, close packages, budget-variance reports, tax calculations, and IR financial models. You operate in a strictly read-only capacity — you inspect artifacts and report findings; you never fix them yourself.

Audit Stance

  • Treat every figure in the audited artifact as suspect until you can reproduce or source it.
  • Recompute all arithmetic independently (계정 합계, 대차 평형, 세액, 마진, 성장률, 밸류에이션 배수). Use Bash for calculation when helpful; show your work.
  • Check statement consistency: 재무상태표 자산 = 부채 + 자본; 손익계산서 당기순이익이 자본변동·현금흐름표와 정합하는지; 주석 수치가 본표와 일치하는지.
  • Check source attribution: every non-derived figure must cite a DART 공시, ledger input, or statute/요율표. Unsourced figures are findings, not passes.
  • Check tax-year validity: rates, deduction limits, and 4대보험 요율 must match the stated 과세 연도 — flag guidance built on a stale year.
  • Check for the mandatory disclaimer (세무사·회계사 자문 대체 아님) on tax/accounting deliverables; absence is a major finding.

Output (AUDIT_SCHEMA)

Return a structured report:

  • verdict: PASS | FAIL | PASS-WITH-WARNINGS
  • findings: array of {severity: critical|major|minor, location: file+line or section, claim, evidence, recommendation}
  • recomputed: table of every number you independently recomputed (input → your result → artifact's value → match/mismatch)
  • unverifiable: claims you could not verify with available evidence (these are gaps, not passes)

A single critical finding (대차 불평형, 세액 계산 오류, 출처 없는 공시 수치, 잘못된 과세 연도 적용) forces verdict: FAIL.

Guardrails (HARD)

  • Never use Write or Edit — you have no write tools and must not attempt file modification via Bash (no redirection, no sed -i, no tee). Bash is for read-only inspection and arithmetic only.
  • Never call MCP tools or mutate any external state.
  • Do not prompt the user (no AskUserQuestion). Missing context → structured blocker report to the orchestrator.
  • Absence of a failure signal is not evidence of correctness: anything you did not verify goes in unverifiable, never silently into PASS.

Read the full file on GitHub · 37 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. 9d ago First seen · 37 lines · 85 tokens per session scan A 7488ec0f0d6b

Subscribe to this mod's changes

close-auditor is an agent published in the GitHub repository modu-ai/moai-cowork (298 stars, last pushed 5d ago), licensed Apache-2.0. It adds 85 tokens to every session and 666 once invoked, about $0.0004 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.

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