What is sdd-implement?

A command that implements a feature by following its prepared task breakdown, design, requirements, and project guidance. SDD means specification-driven development: writing the intended behavior and design before coding.

Use it to build features such as authentication, payment processing, or dashboards when the required SDD documents already exist.

It gives implementation a defined sequence and applies the project’s test-first and governance rules while the tasks are carried out.

How nahisaho/CodeGraphMCPServer configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to nahisaho/CodeGraphMCPServer. 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/nahisaho/CodeGraphMCPServer/main/.claude/commands/sdd-implement.md

Clone the repo

git clone --depth 1 https://github.com/nahisaho/CodeGraphMCPServer

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/nahisaho/codegraphmcpserver/sdd-implement/github.svg)](https://agentmods.dev/commands/nahisaho/codegraphmcpserver/sdd-implement)

Your own site

<a href="https://agentmods.dev/commands/nahisaho/codegraphmcpserver/sdd-implement"><img src="https://agentmods.dev/badge/commands/nahisaho/codegraphmcpserver/sdd-implement/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/nahisaho/codegraphmcpserver/sdd-implement"><img src="https://agentmods.dev/badge/commands/nahisaho/codegraphmcpserver/sdd-implement.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 4,365 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	$0.00000	$0.04365
Opus 5.5	$0.00000	$0.01746
Sonnet 5.5	$0.00000	$0.00873
Haiku 4.5	$0.00000	$0.00436

Measured 2mo ago against content hash c8eee70ce30c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sdd-implement 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/sdd-implement.md · 810 lines

How it starts

The opening of the file, as written. The whole thing — 810 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SDD Implement Command

Execute implementation tasks for a feature.

Instructions for Claude

You are executing the /sdd-implement [feature-name] command to implement a feature following SDD workflow.

Command Format

/sdd-implement authentication
/sdd-implement payment-processing
/sdd-implement user-dashboard

Your Task

Implement the feature by executing tasks from the task breakdown document, following Test-First principles (Article III) and constitutional governance.

Process

1. Read All Context

CRITICAL: Read these files first:

IMPORTANT: Always read ENGLISH versions (.md) as they are the reference/source.

# Task Breakdown (English version)
storage/specs/{{feature-name}}-tasks.md

# Design (English version)
storage/specs/{{feature-name}}-design.md

# Requirements (English version)
storage/specs/{{feature-name}}-requirements.md

# Steering Context (English version)
steering/structure.md
steering/tech.md
steering/product.md

Note: Japanese versions (.ja.md) are translations only. Always use English versions for implementation.

2. Verify Prerequisites

Check task breakdown exists:

❌ **Error**: Task breakdown not found

Expected: storage/specs/{{feature-name}}-tasks.md

Please run `/sdd-tasks {{feature-name}}` first.

Implementation requires task breakdown.

Check design exists:

❌ **Error**: Design document not found

Expected: storage/specs/{{feature-name}}-design.md

Implementation requires design document.

3. Use TodoWrite Tool

IMPORTANT: Use TodoWrite tool to track implementation progress.

Create todos for P0 tasks:

1. TASK-001: Set Up Project Structure
2. TASK-002: Write Tests for REQ-XXX-001 (RED)
3. TASK-003: Implement [Component] (GREEN)
4. TASK-004: Refactor [Component] (BLUE)
5. TASK-005: Implement Database Repository
6. TASK-006: Implement CLI Interface
7. TASK-007: Implement API Endpoints

Mark tasks as:

Read the full file on GitHub · 810 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 · 810 lines · 0 tokens per session scan A c8eee70ce30c

Subscribe to this mod's changes

sdd-implement is a command published in the GitHub repository nahisaho/CodeGraphMCPServer (14 stars, last pushed 11mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 4,365 tokens. 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.

sdd-implement next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
sdd-implementnahisaho/CodeGraphMCPServer	Command	14	11mo ago	MIT	A	0	Claude Code
checklistgithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
clarifygithub/spec-kit	Command	148k	yesterday	MIT	A	27	Claude Code
specifygithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
analyzegithub/spec-kit	Command	148k	yesterday	MIT	A	26	Claude Code
convergegithub/spec-kit	Command	148k	yesterday	MIT	A	35	Claude Code
implementgithub/spec-kit	Command	148k	yesterday	MIT	A	14	Claude Code

CodeGraphMCPServer: Command for Claude Code