design

A system-design command for turning a medium or complex feature into a written architecture plan, including its interfaces and database structure.

In plain words
What is it for?
Use it to explore architecture, define API contracts, plan database changes, and save the result as a design document for a feature.
Why use it?
It gives coding work a shared technical direction before implementation begins and highlights unresolved concerns for review.

Command

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/galando/temper/design
Clone the repo
git clone --depth 1 https://github.com/galando/temper
Per session 6 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 392 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 $0.00006 $0.00392
Opus 5 $0.00003 $0.00196
Sonnet 5 $0.00001 $0.00078
Haiku 4.5 $0.00001 $0.00039

Measured 2d ago against content hash 1176a3eac503, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 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.

commands/design.md · 41 lines

What it actually says

Design: System Design Phase

Goal: Produce system design artifacts for complex/medium features.

Execution

Full methodology: Read $CLAUDE_PLUGIN_ROOT/reference/design.md

Subprocess Mode

If $CLAUDE_PLUGIN_ROOT/scripts/temper config get stages.subprocess false returns true, don't run the methodology inline (skip the reference read and Quick Reference below). Launch the same isolated subprocess /temper uses — model from temper model design, prompt: "Follow $CLAUDE_PLUGIN_ROOT/agents/design.md exactly. Spec: .temper/specs/{feature-slug}. Standalone run — pass --spec-path .temper/specs/{feature-slug} to every temper gate call." Print the returned box verbatim, then run temper gate design --spec-path .temper/specs/{feature-slug} and present for approval (concerns first) — the subprocess is headless; the human gate stays in this context either way.

Quick Reference

  1. Load intent.md + plan.md from active spec
  2. Skip if complexity < medium or config disabled
  3. Explore system architecture, API contracts, DB schema
  4. Write design.md to spec directory — always including its Areas of Concern section (flagged conflicts with owners, or an explicit "None flagged — why")
  5. Run $CLAUDE_PLUGIN_ROOT/scripts/temper gate design (checks that section exists); fix a FAIL before the gate
  6. Present design summary for approval — flagged concerns first

Active Skills

  • Context Engineering — load hierarchical context at stage start (rules → arch → source → errors, under 2K lines/task)
  • Temper Core — stack detection, pack resolution, quality gates
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 · 41 lines · 6 tokens per session scan A 1176a3eac503

Subscribe to this mod's changes

design is a command published in the GitHub repository galando/temper (15 stars, last pushed 3d ago), licensed MIT. It adds 6 tokens to every session and 392 once invoked, about $0.0000 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.