A design-document command that creates interface specifications and database designs for a project. It supports web apps, desktop apps, command-line tools, MCP servers, chatbots, and libraries.

Use it to generate API, CLI, MCP, chat, or library interface details and to describe SQL, NoSQL, vector, file, or local data designs.

It turns product and UI documentation into clearer plans for how software interfaces and data should work. This reduces ambiguity before implementation begins.

How nguyennguyenit/MultiClaude configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to nguyennguyenit/MultiClaude. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/nguyennguyenit/MultiClaude/master/.claude/commands/ipa/dd.md

Clone the repo

git clone --depth 1 https://github.com/nguyennguyenit/MultiClaude

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/nguyennguyenit/multiclaude/dd/github.svg)](https://agentmods.dev/commands/nguyennguyenit/multiclaude/dd)

Your own site

<a href="https://agentmods.dev/commands/nguyennguyenit/multiclaude/dd"><img src="https://agentmods.dev/badge/commands/nguyennguyenit/multiclaude/dd/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/nguyennguyenit/multiclaude/dd"><img src="https://agentmods.dev/badge/commands/nguyennguyenit/multiclaude/dd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 5,122 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.

Model	Per session	Once invoked
Fable 5.1	$0.00017	$0.05122
Opus 5.5	$0.00007	$0.02049
Sonnet 5.5	$0.00003	$0.01024
Haiku 4.5	$0.00002	$0.00512

Measured 2mo ago against content hash 286ec1975dc3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

dd 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 2mo 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.

.claude/commands/ipa/dd.md · 835 lines

How it starts

The opening of the file, as written. The whole thing — 835 lines — stays where its author put it; the contents beside it link to each section on GitHub.

💡 TIP: /ipa:detail is the new canonical name for this command.

Both commands produce the same output. /ipa:dd is kept for backward compatibility.

Purpose

Generate Detail Design (内部設計) following IPA standard. Platform Agnostic - works with any project type.

Output:

docs/INTERFACE_SPEC.md - Interface specifications (API/CLI/MCP/Chat)
docs/DB_DESIGN.md - Data design (SQL/NoSQL/Vector/File)

Project Type Detection

Project Type	Interface Spec	Data Design
Web App	REST/GraphQL API	SQL/NoSQL
Desktop App	IPC/Native API	SQLite/Local
CLI Tool	Commands/Args/Flags	Config files
MCP Server	Tools/Resources/Prompts	-
Chatbot/RAG	Conversation flows	Vector DB
Library/SDK	Public API/Methods	-

Input

Required:

docs/SRD.md
docs/UI_SPEC.md

Optional:

docs/tech-stack.md (for implementation hints only, not required)

Language-Agnostic Principle

┌─────────────────────────────────────────────────────────────────────┐
│                    LANGUAGE-AGNOSTIC DESIGN                         │
├─────────────────────────────────────────────────────────────────────┤
│                                                                     │
│  API_SPEC.md uses:                                                  │
│  - OpenAPI 3.x standard (YAML/JSON)                                │
│  - Standard HTTP methods (GET, POST, PUT, DELETE)                  │
│  - JSON Schema for request/response                                │
│  - NO framework-specific code                                       │
│                                                                     │
│  DB_DESIGN.md uses:                                                 │
│  - Standard SQL (DDL)                                              │
│  - ER Diagram (Mermaid)                                            │
│  - Portable data types                                              │
│  - NO ORM-specific syntax                                          │
│                                                                     │
│  Implementation notes (optional):                                   │
│  - If tech-stack.md exists, add hints for that stack               │
│  - Hints are in separate "Implementation Notes" section            │
│                                                                     │
└─────────────────────────────────────────────────────────────────────┘

Read the full file on GitHub · 835 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.

2mo ago First seen · 835 lines · 17 tokens per session scan A 286ec1975dc3

Subscribe to this mod's changes

dd is a command published in the GitHub repository nguyennguyenit/MultiClaude (23 stars, last pushed 2mo ago), licensed MIT. It adds 17 tokens to every session and 5,122 once invoked, about $0.0001 per session on Opus 5.5. 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.

Databases Planning

dd next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ddnguyennguyenit/MultiClaude	Command	23	2mo ago	MIT	A	17	Claude Code
initfcakyon/claude-codex-settings	Command	1.2k	yesterday	Apache-2.0	A	0	Claude Code
securityajitpratap0/GoSQLX	Command	124	2d ago	Apache-2.0	A	21	Claude Code
database-setupimsaif/design-with-claude	Command	11	yesterday	MIT	A	36	Claude Code
new-migrationRaNDoM6913/claude-code-superkit	Command	3	yesterday	MIT	A	22	Claude Code
json.batch_getstratalab/strata-core	Command	5	1mo ago	Apache-2.0	A	0	Claude Code
json.index.dropstratalab/strata-core	Command	5	1mo ago	Apache-2.0	A	0	Claude Code

MultiClaude: Command for Claude Code