f5-design

f5-design is a command for coding agents from Fujigo-Software/f5-framework-claude. It costs 11 tokens per session (6,183 once invoked), scanned A, original, MIT.

A command for generating software design documents and specifications, including architecture, databases, APIs, screens, requirements, use cases, and business rules.

In plain words
What is it for?
Use it to create basic or detailed design documents, or to generate SRS, use-case, business-rule, architecture, database, API, and screen specifications.
Why use it?
It puts design outputs in the expected versioned folders and separates requirements work from technical design work.

Command

Part of the f5-core plugin — 46 commands, 10 agents shipped together

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/fujigo-software/f5-framework-claude/f5-design
Clone the repo
git clone --depth 1 https://github.com/Fujigo-Software/f5-framework-claude

Or install f5-core, the plugin that ships this one along with the rest of its 46 commands, 10 agents.

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 f5-design

README.md
[![agentmods](https://agentmods.dev/badge/commands/fujigo-software/f5-framework-claude/f5-design.svg)](https://agentmods.dev/commands/fujigo-software/f5-framework-claude/f5-design)
Your own site
<a href="https://agentmods.dev/commands/fujigo-software/f5-framework-claude/f5-design"><img src="https://agentmods.dev/badge/commands/fujigo-software/f5-framework-claude/f5-design.svg" alt="Measured on agentmods" height="20"></a>
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 6,183 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 $0.00011 $0.06183
Opus 5 $0.00005 $0.03092
Sonnet 5 $0.00002 $0.01237
Haiku 4.5 $0.00001 $0.00618

Measured 5d ago against content hash 1a1ba52d234e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

f5-design 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.

plugins/f5-core/commands/f5-design.md · 746 lines

How it starts

The opening of the file, as written. The whole thing — 746 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/f5-design - Unified Design & Specification Command

Consolidated command that replaces:

  • /f5-spec/f5-design spec

Manage and generate design documents (Basic Design 基本設計, Detail Design 詳細設計) and specifications (SRS, Use Cases, Business Rules).

ARGUMENTS

The user's request is: $ARGUMENTS

MODE DETECTION

Pattern Mode Description
spec <action> SPEC SRS, Use Cases, Business Rules (D1-D2)
<other> (default) DESIGN Architecture, DB, API, Screens (D3-D4)

⚠️ CRITICAL OUTPUT RULES

KHÔNG ĐƯỢC tạo files ở docs/, output/, hoặc thư mục khác.

BẮT BUỘC tuân theo cấu trúc sau:

Basic Design (D3)

Command Document Type Output Path
generate architecture Architecture .f5/specs/basic-design/v{VERSION}/system-architecture.md
generate tables Database (all) .f5/specs/basic-design/v{VERSION}/database/database-design.md
generate table <name> Database (single) .f5/specs/basic-design/v{VERSION}/database/{table-name}.md
generate api-list API (all) .f5/specs/basic-design/v{VERSION}/api/api-design.md
generate api <endpoint> API (single) .f5/specs/basic-design/v{VERSION}/api/{METHOD}-{endpoint}.md
generate screen-list Screens (all) .f5/specs/basic-design/v{VERSION}/screens/screen-list.md
generate screen <name> Screens (single) .f5/specs/basic-design/v{VERSION}/screens/{screen-name}.md
generate batch <name> Batch Specs .f5/specs/basic-design/v{VERSION}/batch/{batch-name}.md
generate erd ERD Diagram .f5/specs/basic-design/v{VERSION}/diagrams/erd.md

Detail Design (D4)

Command Document Type Output Path
generate screen-detail <name> Screen Details .f5/specs/detail-design/v{VERSION}/screens/{screen-name}.md
generate api-detail <endpoint> API Details .f5/specs/detail-design/v{VERSION}/api/{endpoint}.md
generate batch-detail <name> Batch Details .f5/specs/detail-design/v{VERSION}/batch/{batch-name}.md
generate component <name> Component Specs .f5/specs/detail-design/v{VERSION}/components/{component}.md

Read the full file on GitHub · 746 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 · 746 lines · 11 tokens per session scan A 1a1ba52d234e

Subscribe to this mod's changes

f5-design is a command published in the GitHub repository Fujigo-Software/f5-framework-claude (24 stars, last pushed 7mo ago), licensed MIT. It adds 11 tokens to every session and 6,183 once invoked, about $0.0001 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.