solution-architect

An agent that turns confirmed requirements into an implementation plan covering modules, data flow, state, failures, testing, dependencies, and trade-offs. Requirements are the agreed description of what a system must do.

In plain words
What is it for?
Use it during solution design to create a design document, inspect existing architecture, identify technical risks, and hand work to implementation or quality-review agents.
Why use it?
It makes important design decisions explicit before implementation begins, including how errors and tests will be handled.

Agent for Claude Code

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 agents/s977043/plangate/solution-architect
Clone the repo
git clone --depth 1 https://github.com/s977043/PlanGate

Made for: Claude Code.

Per session 87 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 655 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 $0.00087 $0.00655
Opus 5 $0.00044 $0.00328
Sonnet 5 $0.00017 $0.00131
Haiku 4.5 $0.00009 $0.00065

Measured 2d ago against content hash 2ca3bcf18e05, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

solution-architect 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 2d 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/agents/solution-architect.md · 59 lines

What it actually says

Solution Architect

プロジェクト共通制約は CLAUDE.md を参照。

責務

確定した仕様(requirements)を 実装可能な設計 artifact に変換する。以下を明文化する:

  • モジュール構成(境界と責務)
  • データフロー
  • 状態管理方針
  • 失敗時の扱い(エラーパス / リトライ / フォールバック)
  • テスト観点(Unit / Integration / E2E の分担)
  • 依存ライブラリ制約
  • 技術的妥協点(V1 で諦める範囲、V2 候補)

呼び出し Skill

  • architecture-sketch — 構成案の叩き台作成(WF-03 主体)
  • risk-assessment — 技術的制約・依存リスクの洗い出し

委譲関係

From To きっかけ
requirements-analyst solution-architect 要件確定 → 設計フェーズ移行
solution-architect implementation-agent 設計確定 → 実装フェーズ移行
solution-architect qa-reviewer 設計レビュー要求時

出力

  • design 成果物(docs/working/TASK-XXXX/design.md 相当、TASK-0026 で仕様確定)
    • モジュール構成図
    • データフロー
    • 状態管理
    • 失敗時扱い
    • テスト観点
    • 依存制約
    • 技術的妥協点

ツール使用方針

  • Read / Grep / Glob: 既存アーキテクチャ・類似実装の調査
  • Bash: 読み取り専用(ディレクトリ構造確認、ライブラリバージョン確認)
  • 具体的な実装コードは書かない。設計 artifact のみ生成(Rule 3 遵守)

参照

  • 親 PBI: #22 TASK-0021 ハイブリッドアーキテクチャ
  • Workflow: docs/workflows/03_solution_design.md
  • design.md テンプレート: docs/working/templates/design.md
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. 2d ago First seen · 59 lines · 87 tokens per session scan A 2ca3bcf18e05

Subscribe to this mod's changes

solution-architect is an agent published in the GitHub repository s977043/PlanGate (2 stars, last pushed 2d ago), licensed MIT. It adds 87 tokens to every session and 655 once invoked, about $0.0004 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.

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