architect

architect is a skill for Claude Code, Codex from adonai-labs/agent-runway. It costs 103 tokens per session (1,115 once invoked), scanned A, original, MIT.

A software design review guide for making and comparing technical decisions. It considers system boundaries, trade-offs, complexity, and how a design can change over time.

In plain words
What is it for?
Use it to compare architecture options, review APIs, decide whether to split a service, or assess patterns such as event-driven systems and CQRS.
Why use it?
It helps reveal hidden dependencies and unnecessary complexity before they become expensive to change.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to compare architecture options, review APIs, decide whether to split a service, or assess patterns such as event-driven systems and CQRS.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/adonai-labs/agent-runway/architect
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.

Any agent
npx skills add adonai-labs/agent-runway --skill architect
Clone the repo
git clone --depth 1 https://github.com/adonai-labs/agent-runway

Made for: Claude Code, Codex.

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.

agentmods badge for architect

README.md
[![agentmods](https://agentmods.dev/badge/skills/adonai-labs/agent-runway/architect/github.svg)](https://agentmods.dev/skills/adonai-labs/agent-runway/architect)
Your own site
<a href="https://agentmods.dev/skills/adonai-labs/agent-runway/architect"><img src="https://agentmods.dev/badge/skills/adonai-labs/agent-runway/architect/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.

agentmods 80×15 button for architect

Your own site · 80×15
<a href="https://agentmods.dev/skills/adonai-labs/agent-runway/architect"><img src="https://agentmods.dev/badge/skills/adonai-labs/agent-runway/architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 103 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,115 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00103 $0.01115
Opus 5 $0.00051 $0.00558
Sonnet 5 $0.00021 $0.00223
Haiku 4.5 $0.00010 $0.00112

Measured 9d ago against content hash 0837a191ea4d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, 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 9d 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.

src/core/skills/architect/SKILL.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Architect

Invoke Command

/architect <question or proposal>

Examples:

  • /architect should we split this into a separate service?
  • /architect is this CQRS setup adding value or just ceremony?
  • /architect review the proposed event-driven integration
  • /architect is this API contract well designed?

Not sure which skill to use? Start with /start — it classifies intent and routes to the right skill.


Role

Act as a senior software architect with broad experience across distributed systems, API design, domain modelling, and system evolution.

This skill is stack-agnostic. For .NET-specific guidance, combine with the dotnet-core skill.

The goal is not to produce elegant diagrams. The goal is to help make better decisions — clearer, safer, proportionate to the problem.


What this skill helps with

  • Evaluating whether a design proposal is proportionate to the problem
  • Identifying hidden coupling, speculative abstraction, or accidental complexity
  • Choosing between architecture patterns with explicit trade-off reasoning
  • Designing API contracts that are stable and evolvable
  • Defining system boundaries by reason to change
  • Assessing whether a refactor improves things or just shuffles them
  • Writing architecture decision records
  • Reasoning about distributed systems, consistency, and integration

How to use this skill

For design proposals

  1. If the problem, constraints, or context are ambiguous, use the AskQuestion tool before analysing. Ask only what would materially change the recommendation — typical clarifications:
    • What is driving this decision now? (growth, pain point, new requirement)
    • Are there team, time, or technology constraints to respect?
    • Is reversibility important, or is this a long-lived commitment?
  2. Apply decision heuristics from decision-heuristics.md
  3. Surface relevant trade-offs from tradeoffs.md
  4. Check for antipatterns from antipatterns.md
  5. Recommend a pattern from patterns.md if applicable
  6. Produce output using templates from templates.md

Read the full file on GitHub · 104 lines

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 104 lines · 103 tokens per session scan A 0837a191ea4d

Subscribe to this mod's changes

architect is a skill published in the GitHub repository adonai-labs/agent-runway (2 stars, last pushed 19d ago), licensed MIT. It adds 103 tokens to every session and 1,115 once invoked, about $0.0005 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.