p3-arch-techstack

p3-arch-techstack is a command for coding agents from jonase47/ccpr. It costs 0 tokens per session (819 once invoked), scanned A, original, MIT.

Selects the tech stack and justifies each technology decision.

Command

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 commands/jonase47/ccpr/p3-arch-techstack
Clone the repo
git clone --depth 1 https://github.com/jonase47/ccpr

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 p3-arch-techstack

README.md
[![agentmods](https://agentmods.dev/badge/commands/jonase47/ccpr/p3-arch-techstack.svg)](https://agentmods.dev/commands/jonase47/ccpr/p3-arch-techstack)
Your own site
<a href="https://agentmods.dev/commands/jonase47/ccpr/p3-arch-techstack"><img src="https://agentmods.dev/badge/commands/jonase47/ccpr/p3-arch-techstack.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 819 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00819
Opus 5 $0.00000 $0.00409
Sonnet 5 $0.00000 $0.00164
Haiku 4.5 $0.00000 $0.00082

Measured today against content hash 0f1f686edf70, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

p3-arch-techstack 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.

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.

commands/p3-arch-techstack.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/p3-arch-techstack – Tech Stack Decision

Selects the tech stack and justifies each technology decision.

Argument: $ARGUMENTS = [Preference, e.g. "Vanilla JS", "React", "Single-File"]

If provided: Consider the preference and check its suitability. If not provided: Recommend based on architecture and project requirements.

Prerequisites

  • Component diagram from /p3-arch-components available

Agent

  • Type: system-architekt
  • Model: sonnet

Context (Orchestrator prepares)

Orchestrator reads beforehand and delivers inline:

  • From ARCHITECTURE.md: Component diagram (overview only)
  • From CLAUDE.md: Briefing preference for tech stack
  • From VALIDATION.md: PoC tech findings (if available)

Prompt Template

Goal: Select tech stack for the project. Preference: $ARGUMENTS

Architecture: [inline component diagram]

Output Format: Table: | Area | Technology | Justification | Alternatives | Areas: Frontend, Backend, Database, Build Tool, Hosting, External Services

Constraints:

  • ONLY tech stack, NO architecture changes
  • Justification max. 1 sentence per technology
  • Max. 8 rows

Orchestrator Checkpoint

  • Every technology has a justification?
  • Briefing preference considered or explicitly rejected with reasoning?

Write Detail File

Write the result to docs/architecture/TECH_STACK.md (overwrite if it exists). Start with this YAML frontmatter:

---
phase: P3
subskill: arch-techstack
status: active
last_updated: <DD.MM.YYYY>
---

Body sections: ## Stack Overview (the table Area / Technology / Justification / Alternatives), ## Open Trade-offs (decisions still to confirm in implementation).

Update Phase Index

Update docs/architecture/ARCHITECTURE.md:

  • Set **Last Updated:** <DD.MM.YYYY>.
  • In Detail Files table: ensure a row for [TECH_STACK.md](TECH_STACK.md) with status complete.
  • Lift load-bearing tech-stack decisions into Key Decisions (1 line each, e.g. - Frontend: SwiftUI → see TECH_STACK.md).

Read the full file on GitHub · 84 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. today First seen · 84 lines · 0 tokens per session scan A 0f1f686edf70

Subscribe to this mod's changes

p3-arch-techstack is a command published in the GitHub repository jonase47/ccpr (1 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 819 tokens. 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 2026-09-03.