worldbuilding

worldbuilding is a plugin for Claude Code from wlcarden/worldanvil-mcp. Its token cost is not measured, scanned A, original, MIT.

A plugin for managing fictional worlds and tabletop or role-playing campaigns, with access to World Anvil for articles, maps, timelines, and campaigns.

In plain words
What is it for?
It is for creating and managing campaign content, world articles, maps, and timelines through the World Anvil service.
Why use it?
It keeps worldbuilding material and campaign information organized in one system instead of scattering it across separate notes and tools.

Plugin for Claude Code

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.

Claude Code
/plugin marketplace add wlcarden/worldanvil-mcp
agentmods
npx agentmods add plugins/wlcarden/worldanvil-mcp/worldbuilding
Clone the repo
git clone --depth 1 https://github.com/wlcarden/worldanvil-mcp

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 worldbuilding

README.md
[![agentmods](https://agentmods.dev/badge/plugins/wlcarden/worldanvil-mcp/worldbuilding.svg)](https://agentmods.dev/plugins/wlcarden/worldanvil-mcp/worldbuilding)
Your own site
<a href="https://agentmods.dev/plugins/wlcarden/worldanvil-mcp/worldbuilding"><img src="https://agentmods.dev/badge/plugins/wlcarden/worldanvil-mcp/worldbuilding.svg" alt="Measured on agentmods" 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. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

worldbuilding 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 4d 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/worldbuilding/.claude-plugin/plugin.json · 19 lines

What it actually says

{
  "name": "worldbuilding",
  "version": "1.0.0",
  "description": "Worldbuilding tools including World Anvil API integration for managing campaigns, articles, maps, and timelines",
  "author": {
    "name": "Leighton Carden",
    "url": "https://github.com/wlcarden"
  },
  "keywords": [
    "worldbuilding",
    "worldanvil",
    "campaigns",
    "maps",
    "larp",
    "rpg",
    "fiction"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 MCP server travel with it, and installing the plugin installs all of them. Each is measured on its own page, and each can be installed alone.

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. 4d ago First seen · 19 lines scan A 32eaf5da798f

Subscribe to this mod's changes

worldbuilding is a plugin published in the GitHub repository wlcarden/worldanvil-mcp (10 stars, last pushed 3mo 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.