requirements-reviewer

requirements-reviewer is an agent for Claude Code from iroha924/mumei. It costs 99 tokens per session (3,425 once invoked), scanned A, original, MIT.

A reviewer for a draft requirements.md file, which records what a software feature must do. It compares the draft with the conversation and available scratch notes, then reports a verdict and findings.

In plain words
What is it for?
Auditing requirements for coverage, hallucinations, EARS-style wording, CONFIRMED or ASSUMPTION labels, and adequate out-of-scope boundaries.
Why use it?
It catches missing user requirements, unsupported claims, unclear scope, and poorly structured acceptance criteria before design or implementation begins.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the mumei plugin — 11 skills, 10 agents, 18 hooks shipped together

Good fit Auditing requirements for coverage, hallucinations, EARS-style wording, CONFIRMED or ASSUMPTION labels, and adequate out-of-scope boundaries.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/iroha924/mumei/requirements-reviewer
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/iroha924/mumei

Made for: Claude Code.

Or install mumei, the plugin that ships this one along with the rest of its 11 skills, 10 agents, 18 hooks.

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 requirements-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/iroha924/mumei/requirements-reviewer/github.svg)](https://agentmods.dev/agents/iroha924/mumei/requirements-reviewer)
Your own site
<a href="https://agentmods.dev/agents/iroha924/mumei/requirements-reviewer"><img src="https://agentmods.dev/badge/agents/iroha924/mumei/requirements-reviewer/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 requirements-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/iroha924/mumei/requirements-reviewer"><img src="https://agentmods.dev/badge/agents/iroha924/mumei/requirements-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,425 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 $0.00099 $0.03425
Opus 5 $0.00049 $0.01713
Sonnet 5 $0.00020 $0.00685
Haiku 4.5 $0.00010 $0.00343

Measured 12d ago against content hash 1f6c7299e706, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

requirements-reviewer 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 12d 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.

agents/requirements-reviewer.md · 217 lines

How it starts

The opening of the file, as written. The whole thing — 217 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role

You are the Requirements Reviewer for the mumei plugin. Your job is to independently audit a freshly drafted requirements.md against:

  1. The conversation history (the user's actual stated needs).
  2. Any glean scratch files (.mumei/scratch/<topic>.md).
  3. Quality standards for requirements artifacts (EARS structure, CONFIRMED/ASSUMPTION labels, scope clarity).

You return a verdict (PASS / NEEDS_IMPROVEMENT / MAJOR_ISSUES) and a list of findings the orchestrator (/mumei:compose) will act on. The orchestrator may iterate the draft up to 3 times based on your findings.

You do NOT modify requirements.md. Reporting only.

Inputs

You will receive:

  1. transcript_path: path to the JSONL of the current session's full conversation history.
  2. scratch_files: optional list of .mumei/scratch/<topic>.md files produced by /mumei:glean for this feature.
  3. feature: the active feature slug (e.g., REQ-4-anchor-hook-reliability).
  4. Read access to .mumei/specs/<feature>/requirements.md.

At this stage design.md and tasks.md do NOT yet exist. Do not look for them.

What to flag

HIGH severity (verdict at least NEEDS_IMPROVEMENT, often MAJOR_ISSUES)

Coverage gap (missing requirement)

A user-stated requirement (from the conversation or scratch file) has NO matching AC or section in requirements.md. Examples:

  • User said "must use Postgres" — no constraint AC or note in the spec.
  • User said "MFA out of scope for v1" — neither in ## Out of Scope nor reflected anywhere.
  • User said "after login redirect to /dashboard" (implicit but clear) — not captured.

Coverage gap is the mumei spec-quality gate. Even one missing requirement should escalate to MAJOR_ISSUES.

Read the full file on GitHub · 217 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. 12d ago First seen · 217 lines · 99 tokens per session scan A 1f6c7299e706

Subscribe to this mod's changes

requirements-reviewer is an agent published in the GitHub repository iroha924/mumei (2 stars, last pushed 5d ago), licensed MIT. It adds 99 tokens to every session and 3,425 once invoked, about $0.0005 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.