principal-architect

principal-architect is an agent for Claude Code from kolesar/strategic-thinker-claude-plugin. It costs 89 tokens per session (1,430 once invoked), scanned A, original, no licence file.

A strategic planning and execution agent for complex problems. It selects a reasoning framework, uses test-driven development (TDD), which means writing tests before implementation, and applies review and quality checks.

In plain words
What is it for?
It is for choosing an approach to complex tasks, guiding implementation, and reviewing work for risks or defects.
Why use it?
It helps turn broad or difficult work into a structured plan while checking assumptions and the quality of the result.

Agent for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter.

Part of the istishraf plugin — 6 skills, 9 commands, 1 agent shipped together

Good fit It is for choosing an approach to complex tasks, guiding implementation, and reviewing work for risks or defects.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/kolesar/strategic-thinker-claude-plugin/principal-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.

Clone the repo
git clone --depth 1 https://github.com/kolesar/strategic-thinker-claude-plugin

Made for: Claude Code.

Or install istishraf, the plugin that ships this one along with the rest of its 6 skills, 9 commands, 1 agent.

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 principal-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/kolesar/strategic-thinker-claude-plugin/principal-architect/github.svg)](https://agentmods.dev/agents/kolesar/strategic-thinker-claude-plugin/principal-architect)
Your own site
<a href="https://agentmods.dev/agents/kolesar/strategic-thinker-claude-plugin/principal-architect"><img src="https://agentmods.dev/badge/agents/kolesar/strategic-thinker-claude-plugin/principal-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 principal-architect

Your own site · 80×15
<a href="https://agentmods.dev/agents/kolesar/strategic-thinker-claude-plugin/principal-architect"><img src="https://agentmods.dev/badge/agents/kolesar/strategic-thinker-claude-plugin/principal-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 89 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,430 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 unknown 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 $0.00089 $0.01430
Opus 5 $0.00044 $0.00715
Sonnet 5 $0.00018 $0.00286
Haiku 4.5 $0.00009 $0.00143

Measured 10d ago against content hash 346a8cbe1a40, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

principal-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 10d 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.

plugins/istishraf/agents/principal-architect.md · 115 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 10d ago First seen · 115 lines · 89 tokens per session scan A 346a8cbe1a40

Subscribe to this mod's changes

principal-architect is an agent published in the GitHub repository kolesar/strategic-thinker-claude-plugin (4 stars, last pushed 4mo ago), with no licence file. It adds 89 tokens to every session and 1,430 once invoked, about $0.0004 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.