senior-architect-engineering

senior-architect-engineering is a skill for Claude Code, Codex from jggomez/expert-ai-developer-skills. It costs 82 tokens per session (1,344 once invoked), scanned A, original, Apache-2.0.

Pragmatic software architecture and system design skill. Authors concise MADR Architecture Decision Records (docs/ /adr-NNN-.md /spec.md (<= 50 lines) grounded in KISS, YAGNI, SOLID, and clean boundaries.

Skill for Claude CodeCodex

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

Install with agentmods
npx agentmods add skills/jggomez/expert-ai-developer-skills/senior-architect-engineering
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 jggomez/expert-ai-developer-skills --skill senior-architect-engineering
Clone the repo
git clone --depth 1 https://github.com/jggomez/expert-ai-developer-skills

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 senior-architect-engineering

README.md
[![agentmods](https://agentmods.dev/badge/skills/jggomez/expert-ai-developer-skills/senior-architect-engineering/github.svg)](https://agentmods.dev/skills/jggomez/expert-ai-developer-skills/senior-architect-engineering)
Your own site
<a href="https://agentmods.dev/skills/jggomez/expert-ai-developer-skills/senior-architect-engineering"><img src="https://agentmods.dev/badge/skills/jggomez/expert-ai-developer-skills/senior-architect-engineering/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 senior-architect-engineering

Your own site · 80×15
<a href="https://agentmods.dev/skills/jggomez/expert-ai-developer-skills/senior-architect-engineering"><img src="https://agentmods.dev/badge/skills/jggomez/expert-ai-developer-skills/senior-architect-engineering.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,344 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 $0.00082 $0.01344
Opus 5.5 $0.00033 $0.00538
Sonnet 5.5 $0.00016 $0.00269
Haiku 4.5 $0.00008 $0.00134

Measured today against content hash e6a940130145, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

senior-architect-engineering 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 today.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/create_adr.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

plugins/antigravity/python-backend/skills/senior-architect-engineering/SKILL.md · 62 lines

How it starts

The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Senior Architect Engineering Skill

Overview

This skill guides pragmatic software architecture, structural boundary design, and technical trade-off analysis without academic boilerplate. Instead of multi-page SEI/ATAM walls of text, it enforces crisp MADR Architecture Decision Records (docs/<feature-name>/adr-NNN-<slug>.md, <= 55 lines) and the ## Architecture section of the single discovery file docs/<feature-name>/spec.md (<= 50 lines) governed by KISS, YAGNI, and SOLID.

When to Use

Capability-Gated Trigger Rules

  • INVOKE ONLY IF introducing genuine structural decisions: new database schemas/migrations, cross-service API contracts, new core dependencies, concurrency/resilience models, or architectural pattern shifts.
  • SKIP when following established repository patterns, adding routine CRUD handlers/views within existing boundaries, or performing bugfixes, chores, and localized refactors.
  • Delegate Elsewhere: Business scope & US-XX/AC-XX -> product-analyst; UI tokens & screens -> ui-ux-designer; TDD implementation -> code-implementer.

Process

1. Right-Size the Architectural Deliverable

  • Single Structural Decision (e.g., choosing a token store, queue strategy, or library): Author one concise ADR (docs/<feature-name>/adr-NNN-<slug>.md <= 55 lines)—keep ## Architecture in spec.md to a 1–3 line pointer to it.
  • Multi-Module / Multi-Layer Feature (touching schemas, ports/adapters, and API contracts): Author the ## Architecture section of docs/<feature-name>/spec.md (<= 50 lines) defining module boundaries, data contracts, and a concise Mermaid diagram, plus an ADR only for non-obvious trade-offs.

2. Concise MADR Standard (<= 55 lines)

Follow references/adr-template.md strictly—zero academic 6-part SEI/ATAM ceremony:

  • Status & Date: Proposed | Accepted | Superseded — YYYY-MM-DD
  • ## 1. Context: Problem and measurable technical constraints in <= 5 lines (e.g., p99 < 150ms, idempotency).
  • ## 2. Options Considered: 2–3 concrete options (1–2 lines each).
  • ## 3. Decision & Justification: Chosen design, clean dependency boundaries, and why it wins under KISS/YAGNI.
  • ## 4. Trade-offs: + Benefits vs - Costs, operational risks, and concrete mitigations.

Read the full file on GitHub · 62 lines

Files

What ships with it

3 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. today First seen · 62 lines · 82 tokens per session scan A e6a940130145

Subscribe to this mod's changes

senior-architect-engineering is a skill published in the GitHub repository jggomez/expert-ai-developer-skills (30 stars, last pushed yesterday), licensed Apache-2.0. It adds 82 tokens to every session and 1,344 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-11-06.

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