requirements

requirements is a skill for Claude Code from AI-Unified-Process/marketplace. It costs 91 tokens per session (1,484 once invoked), scanned A, original, Apache-2.0.

A requirements-writing workflow for documenting what software must do and the quality constraints it must meet.

In plain words
What is it for?
Use it to create functional user stories, measurable non-functional requirements, constraints, priorities, and statuses in docs/requirements.md.
Why use it?
It turns an informal product vision into an organized catalog that developers can use to plan and verify work.

Skill for Claude Code

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

Part of the aiup-core plugin — 6 skills shipped together

Good fit Use it to create functional user stories, measurable non-functional requirements, constraints, priorities, and statuses in docs/requirements.md.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ai-unified-process/marketplace/requirements
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 AI-Unified-Process/marketplace --skill requirements
Clone the repo
git clone --depth 1 https://github.com/AI-Unified-Process/marketplace

Made for: Claude Code.

Or install aiup-core, the plugin that ships this one along with the rest of its 6 skills.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/ai-unified-process/marketplace/requirements/github.svg)](https://agentmods.dev/skills/ai-unified-process/marketplace/requirements)
Your own site
<a href="https://agentmods.dev/skills/ai-unified-process/marketplace/requirements"><img src="https://agentmods.dev/badge/skills/ai-unified-process/marketplace/requirements/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

Your own site · 80×15
<a href="https://agentmods.dev/skills/ai-unified-process/marketplace/requirements"><img src="https://agentmods.dev/badge/skills/ai-unified-process/marketplace/requirements.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 91 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,484 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: 1 finding, up to medium

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 →

  • medium Prompt Injection · line 42
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
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 $0.00091 $0.01484
Opus 5 $0.00046 $0.00742
Sonnet 5 $0.00018 $0.00297
Haiku 4.5 $0.00009 $0.00148

Measured 12d ago against content hash 837354c3de7a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

requirements 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.

aiup-core/skills/requirements/SKILL.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Requirements

Instructions

Create or update the requirements catalog at docs/requirements.md based on docs/vision.md. The document contains functional requirements, non-functional requirements, and constraints organized as Markdown tables.

DO NOT

  • Mix requirement types in a single table
  • Skip the user story format for functional requirements
  • Use duplicate IDs across requirement types
  • Leave the Status column empty

Requirement Types

Functional Requirements (FR)

Define what the system should do. Always use the user story format:

Format: As a [role], I want [goal] so that [benefit].

ID Title User Story Priority Status
FR-001 Create Task As a project manager, I want to create tasks so that I can track work items. High Open
FR-002 Assign Task As a project manager, I want to assign tasks to team members so that work is distributed. High Open
FR-003 Filter Tasks As a team member, I want to filter tasks by status so that I can focus on relevant items. Medium Open

Non-Functional Requirements (NFR)

Define quality attributes. Must be measurable.

ID Title Requirement Category Priority Status
NFR-001 Response Time All page loads must complete within 2 seconds. Performance High Open
NFR-002 Availability System must maintain 99.9% uptime during business hours. Availability High Open
NFR-003 Concurrent Users System must support 100 concurrent users without degradation. Scalability Medium Open
NFR-004 Data Encryption All data in transit must use TLS 1.3 encryption. Security High Open

Read the full file on GitHub · 127 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 127 lines · 91 tokens per session scan A 837354c3de7a

Subscribe to this mod's changes

requirements is a skill published in the GitHub repository AI-Unified-Process/marketplace (125 stars, last pushed 14d ago), licensed Apache-2.0. It adds 91 tokens to every session and 1,484 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 2026-08-30.

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