architect

architect is a skill for Claude Code, OpenCode from painhardcore/pstack. It costs 52 tokens per session (1,219 once invoked), scanned A, a copy of architect, MIT.

A design-first coding workflow that sketches data types, function signatures, classes, and module boundaries before implementation.

In plain words
What is it for?
Use it to plan non-trivial features, review existing architecture, compare design options, and implement code against an agreed outline.
Why use it?
It reduces the risk of committing to a poor code structure before the surrounding system and its constraints are understood.

Skill for Claude CodeOpenCode

Written for Claude Code and OpenCode: shipped in a Claude Code plugin, but also installed under .opencode/. Also seen: mentions subagents.

Part of the pstack plugin — 41 skills, 2 agents shipped together

Good fit Use it to plan non-trivial features, review existing architecture, compare design options, and implement code against an agreed outline.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/painhardcore/pstack/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 painhardcore/pstack --skill architect
Clone the repo
git clone --depth 1 https://github.com/painhardcore/pstack

Made for: Claude Code, OpenCode.

Or install pstack, the plugin that ships this one along with the rest of its 41 skills, 2 agents.

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/painhardcore/pstack/architect/github.svg)](https://agentmods.dev/skills/painhardcore/pstack/architect)
Your own site
<a href="https://agentmods.dev/skills/painhardcore/pstack/architect"><img src="https://agentmods.dev/badge/skills/painhardcore/pstack/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/painhardcore/pstack/architect"><img src="https://agentmods.dev/badge/skills/painhardcore/pstack/architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,219 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 91% copy Near-identical to another mod 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 $0.00052 $0.01219
Opus 5.5 $0.00021 $0.00488
Sonnet 5.5 $0.00010 $0.00244
Haiku 4.5 $0.00005 $0.00122

Measured 1mo ago against content hash f1915b8e95ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

Origin

This is a copy

91% identical to architect — 48 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.opencode/skills/architect/SKILL.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Architect

Design before implementing. Sketch types, function signatures, class shapes, and module boundaries with not implemented bodies and pseudocode. Synthesize across multiple model perspectives, then fill in code against the chosen sketch. If implementation proves the sketch wrong, throw it out and redesign.

Start

Open a todolist with one entry per phase before starting. Autonomous mode without checkpoints needs the list to show phase position and keep phases from silently disappearing.

  1. Ground
  2. Sketch
  3. Agree
  4. Implement
  5. Scrap

Phase A: Ground the problem

Build a real mental model of every system the new code touches. Run the how skill over the relevant subsystems. Critique mode if existing structure is the constraint or the design must push back on it.

Naming a file isn't grounding. Produce the traced model how prescribes. If the design redefines ownership or layering, also run the why skill on the existing shape so the rationale becomes a constraint, not a guess.

Skip Phase A only when the work is genuinely greenfield with no surrounding system to integrate.

Phase B: Sketch

Run the arena skill with the design-sketch task and the Phase A grounding artifacts. Pass references/runner-prompt.md as each runner's prompt. Each candidate produces a design package shaped per references/rationale-template.md: the caller's usage written first, then the type sketch, function signatures, module map, and prose rationale derived from it.

Inherit the parent model unless the host supports model selection. When it does, prefer distinct available model families for the candidate sketches. If subagents are unavailable or forbidden, sketch at least two distinct designs inline before synthesis.

Design it twice. Require at least two structurally distinct candidates before synthesis, even when the first looks sufficient. This is the exhaust-the-design-space principle skill made concrete. Whole-shape alternatives, not point fixes inside one shape.

Read the full file on GitHub · 83 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. 1mo ago First seen · 83 lines · 52 tokens per session scan A f1915b8e95ad

Subscribe to this mod's changes

architect is a skill published in the GitHub repository painhardcore/pstack (12 stars, last pushed 5d ago), licensed MIT. It adds 52 tokens to every session and 1,219 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to architect, differing in 48 lines, and is treated as a copy.

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