A block-based fairytale castle builder for Blockworld, a grid world made from simple shapes and materials. It creates structures with spires, turrets, a central keep, banners, and gold finials.

Use it to build a castle, palace, fortress, or stronghold in Blockworld.

It removes the need to design and assemble a detailed fantasy castle by hand in the Blockworld grid.

How techleadhd/blockworld configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to techleadhd/blockworld. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/techleadhd/blockworld/main/.claude/skills/castle/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/techleadhd/blockworld

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/skills/techleadhd/blockworld/castle/github.svg)](https://agentmods.dev/skills/techleadhd/blockworld/castle)

Your own site

<a href="https://agentmods.dev/skills/techleadhd/blockworld/castle"><img src="https://agentmods.dev/badge/skills/techleadhd/blockworld/castle/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/skills/techleadhd/blockworld/castle"><img src="https://agentmods.dev/badge/skills/techleadhd/blockworld/castle.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,447 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.

Model	Per session	Once invoked
Fable 5.1	$0.00062	$0.01447
Opus 5.5	$0.00025	$0.00579
Sonnet 5.5	$0.00012	$0.00289
Haiku 4.5	$0.00006	$0.00145

Measured 2mo ago against content hash 5e0b72df697e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

castle 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 2mo 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/skills/castle/SKILL.md · 145 lines

The source is not reproduced here

No licence file

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.

2mo ago First seen · 145 lines · 62 tokens per session scan A 5e0b72df697e

Subscribe to this mod's changes

castle is a skill published in the GitHub repository techleadhd/blockworld (21 stars, last pushed 4mo ago), with no licence file. It adds 62 tokens to every session and 1,447 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.

Game development

castle next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
castletechleadhd/blockworld	Skill	21	4mo ago	none	A	62	Claude Code
playtest-reportDonchitos/Claude-Code-Game-Studios	Skill	38k	yesterday	MIT	A	20	Claude Code
godot-signals-groupsgamedev-skills/awesome-gamedev-agent-skills	Skill	8.2k	today	Apache-2.0	A	95	Claude Code
texture-workflowarjun988/blender-skills	Skill	2.4k	4d ago	MIT	A	41	Claude Code
scenario-unreal-gameplayscenario-labs/skills	Skill	3.7k	today	MIT	A	121	Claude Code
motionOpenDCAI/GameFactory-3A	Skill	1.0k	13d ago	Apache-2.0	A	0	Claude Code, Codex
unity-addressablesBesty0728/Unity-Skills	Skill	1.9k	today	MIT	A	25	Claude Code, Codex

blockworld: Skill for Claude Code