Londeren marketplace

Londeren marketplace is a plugin for Claude Code from Londeren/claude-plugins. Its token cost is not measured, scanned A, original, MIT.

A collection of Claude Code and Claude.ai add-ons from Londeren. The catalogue entry lists several separate tools, including ones for writing prompts and turning books into reusable skills.

In plain words
What is it for?
Use it to access Londeren's listed add-ons for prompt writing, knowledge extraction, text editing, and related tasks.
Why use it?
It provides a single package for installing and discovering the author's add-ons instead of handling each add-on separately. The available jobs depend on which included add-on is used.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest. Also seen: mentions Claude Code.

Good fit Use it to access Londeren's listed add-ons for prompt writing, knowledge extraction, text editing, and related tasks.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add Londeren/claude-plugins
/plugin install Londeren marketplace
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/Londeren/claude-plugins

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.

agentmods badge for Londeren marketplace

README.md
[![agentmods](https://agentmods.dev/badge/plugins/londeren/claude-plugins/marketplace/github.svg)](https://agentmods.dev/plugins/londeren/claude-plugins/marketplace)
Your own site
<a href="https://agentmods.dev/plugins/londeren/claude-plugins/marketplace"><img src="https://agentmods.dev/badge/plugins/londeren/claude-plugins/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.

agentmods 80×15 button for Londeren marketplace

Your own site · 80×15
<a href="https://agentmods.dev/plugins/londeren/claude-plugins/marketplace"><img src="https://agentmods.dev/badge/plugins/londeren/claude-plugins/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

Londeren 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 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.

.claude-plugin/marketplace.json · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "name": "Londeren",
  "owner": {
    "name": "Sergey Lebedev",
    "url": "https://github.com/Londeren"
  },
  "description": "Plugins by Londeren for Claude Code and claude.ai. One entry per plugin: meta-skills under plugins/, skills built from books in Londeren/bookshelf-skills.",
  "plugins": [
    {
      "name": "prompt-writer",
      "source": "./plugins/prompt-writer",
      "category": "productivity",
      "tags": [
        "prompt-engineering",
        "system-prompt",
        "writing"
      ]
    },
    {
      "name": "book-to-skill",
      "source": "./plugins/book-to-skill",
      "category": "productivity",
      "tags": [
        "skill-generation",
        "knowledge-extraction",
        "methodology",
        "distillation"
      ]
    },
    {
      "name": "glavred-skill",
      "source": {
        "source": "git-subdir",
        "url": "https://github.com/Londeren/bookshelf-skills.git",
        "path": "plugins/glavred-skill"
      },
      "description": "Reviews and edits social media posts by the method of Maxim Ilyahov. Reports findings level by level (meaning, delivery, wording, format) and rewrites a post keeping the author's facts and voice. Works in Russian, lives in the bookshelf-skills repository.",
      "category": "productivity",
      "tags": [
        "editing",
        "copywriting",
        "social-media",
        "russian"
      ]
    },
    {
      "name": "hormozi",
      "source": {
        "source": "git-subdir",
        "url": "https://github.com/Londeren/bookshelf-skills.git",
        "path": "plugins/hormozi"
      },
      "description": "Diagnoses a business by the method of Alex Hormozi ($100M Offers, $100M Leads, $100M Money Models): what is broken and what to fix first. Reviews an offer, an ad, a sales script, pricing, a money model, lead nurture or retention with the rule behind each finding, and rewrites the material keeping the user's facts and numbers. Answers in the language of the request, lives in the bo

Read the full file on GitHub · 64 lines

Contents

The plugins it lists here

This marketplace lists 2 plugins kept in the same repository. Each has its own page, its own measurements and its own install command.

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 Changed · +16 lines 1861de6cb7cc
  2. 1mo ago Changed · +1 lines 93744b18ae79
  3. 2mo ago First seen · 47 lines scan A 188f535590d2

Subscribe to this mod's changes

Londeren marketplace is a plugin published in the GitHub repository Londeren/claude-plugins (5 stars, last pushed 1mo ago), 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.

Related

Londeren marketplace compared with plugins from other repositories

Londeren marketplace next to 6 plugins from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
Londeren marketplaceLonderen/claude-pluginsPlugin51mo agoMITA—Claude Code
humanizerblader/humanizerPlugin65k9d agoMITA—Claude Code
claude-plugins-official marketplaceanthropics/claude-plugins-officialPlugin46kyesterdayApache-2.0A—Claude Code
nextjsvercel/next.jsPlugin143kyesterdayMITA—Claude Code
themes-examplegoogle-gemini/gemini-cliPlugin109kyesterdayApache-2.0A—Gemini CLI
knowledge-work-plugins marketplaceanthropics/knowledge-work-pluginsPlugin35k2d agoApache-2.0A—Claude Code
code-modernizationanthropics/claude-plugins-officialPlugin46kyesterdayApache-2.0A—Claude Code