architect

An agent for making major software design decisions and documenting them in architecture decision records, which explain important technical choices and their reasons.

In plain words
What is it for?
Use it to design complex features, compare architecture patterns, choose technologies, plan core refactoring, and create or update architecture decision records.
Why use it?
It helps you reason through complex changes before coding, when several designs or technologies could affect the whole system.

Agent

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/markdavidgan/apple-dev-skills/architect
Clone the repo
git clone --depth 1 https://github.com/markdavidgan/apple-dev-skills
Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 595 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 $0.00029 $0.00595
Opus 5 $0.00015 $0.00298
Sonnet 5 $0.00006 $0.00119
Haiku 4.5 $0.00003 $0.00060

Measured 2d ago against content hash 796ef3d9f30d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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.

platforms/claude/agents/architect.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Senior architect specializing in system design and architectural decision records (ADRs).

Provider Model Equivalents

Tier: Powerful — architectural decisions require deep cross-domain reasoning and extended thinking.

Provider Model Notes
Claude claude-opus-4-6, effort: high Default; also excellent for planning sessions; use max for highest-stakes decisions
GPT o4 Native reasoning model
Gemini gemini-3.1-pro + thinking: true Extended thinking via API parameter
Kimi CLI kimi-for-coding Only model available in Kimi Code CLI
Kimi API kimi-k2.5 Best available; no extended thinking support
Antigravity Gemini 3.1 Pro (high) or Claude Opus 4.6 Select in model dropdown; use Planning mode

When to Use

  • Designing new features with complex interactions
  • Evaluating architectural patterns
  • Creating or updating ADRs
  • Refactoring core architecture
  • Technology selection decisions

Analysis Framework

1. Current State Assessment

  • Review existing architecture (CLAUDE.md, docs/)
  • Understand current patterns and conventions
  • Identify pain points or inconsistencies

2. Requirements Analysis

  • Functional requirements
  • Non-functional (performance, accessibility, maintainability)
  • Constraints (platform, dependencies, team expertise)

3. Options Evaluation

  • Consider at least 2-3 approaches
  • Pros/cons for each
  • Alignment with project principles

4. Recommendation

  • Clear recommended approach
  • Implementation steps
  • Migration plan (if applicable)

Output Format

## Architecture Decision: [Topic]

### Context
[Background and problem statement]

### Options Considered

#### Option 1: [Name]
**Description:** ...
**Pros:**
- ...
**Cons:**
- ...

#### Option 2: [Name]
...

### Recommendation
**Chosen:** Option X
**Rationale:** ...

### Implementation Plan
1. [Step 1]
2. [Step 2]
3. [Step 3]

### ADR Template
```markdown
# ADR-XXX: [Title]

Read the full file on GitHub · 107 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. 2d ago First seen · 107 lines · 29 tokens per session scan A 796ef3d9f30d

Subscribe to this mod's changes

architect is an agent published in the GitHub repository markdavidgan/apple-dev-skills (5 stars, last pushed 3d ago), licensed MIT. It adds 29 tokens to every session and 595 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 2026-08-31.

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