What is promptctl marketplace?

A collection of plugins for improving prompts and agent guidance, with shared design rules, task-specific writing guidance, and workflow tools.

Use it to provide architectural rules for code, prose, or prompts and to manage agent work across tasks and sessions.

It helps agents choose suitable guidance for a task and supports recurring work such as picking up tickets, handing off sessions, and processing pull-request reviews.

promptctl marketplace — Plugin for Claude Code by promptctl/laws

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/promptctl/laws

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/promptctl/laws/marketplace/github.svg)](https://agentmods.dev/plugins/promptctl/laws/marketplace)

Your own site

<a href="https://agentmods.dev/plugins/promptctl/laws/marketplace"><img src="https://agentmods.dev/badge/plugins/promptctl/laws/marketplace/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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/promptctl/laws/marketplace"><img src="https://agentmods.dev/badge/plugins/promptctl/laws/marketplace.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

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.

Security

Grade A, and why

promptctl marketplace 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.

.claude-plugin/marketplace.json · 33 lines

What it actually says

{
  "name": "promptctl",
  "description": "The promptctl plugins: the universal architectural laws, agent workflow tooling, and the lit issue tracker.",
  "owner": {
    "name": "Brandon Fryslie"
  },
  "plugins": [
    {
      "name": "laws",
      "source": "./plugins/laws",
      "description": "Universal architectural laws for code work, medium-scoped quality skills, and a skill-router hook that loads the one matching each task's medium."
    },
    {
      "name": "memento",
      "source": {
        "source": "git-subdir",
        "url": "promptctl/memento",
        "path": "memento"
      },
      "description": "Agent-native workflow tooling: address PR review findings and carry a goal across a context reset."
    },
    {
      "name": "lit",
      "source": {
        "source": "git-subdir",
        "url": "promptctl/links-issue-tracker",
        "path": "claude-plugin"
      },
      "description": "The /next and quickstart skills for repos tracked with lit, the agent-native issue tracker."
    }
  ]
}

Contents

The plugins it lists here

This marketplace lists 1 plugin kept in the same repository. Each has its own page, its own measurements and its own install command.

Plugin laws 14 inside A not measured

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.

today Changed · +13 lines 357b889c58aa
2mo ago First seen · 20 lines scan A 856f391e247c

Subscribe to this mod's changes

promptctl marketplace is a plugin published in the GitHub repository promptctl/laws (6 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.

Data and AI Prompting Writing and docs

promptctl marketplace next to 6 plugins from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
promptctl marketplacepromptctl/laws	Plugin	6	today	MIT	A	—	Claude Code
context-engineeringmuratcankoylan/Agent-Skills-for-Context-Engineering	Plugin	18k	1mo ago	MIT	A	—	Claude Code
magic-wordsmichellemayes/magic-words	Plugin	6	20d ago	MIT	A	—	Claude Code
promptkittybaldaworks/promptkitty	Plugin	5	16d ago	MIT	A	—	Claude Code
prompeteerprompeteer/prompeteer-mcp	Plugin	1	2mo ago	MIT	A	—	Gemini CLI
prompt-engineering-expertMiaoge-Ge/coding-agent-skills	Plugin	7	5mo ago	MIT	A	—	Claude Code
prompthubLionelHao/prompthub-mcp	Plugin	0	3mo ago	none	A	—	Claude Code