A technical guide to Corbel's BrickLayers transformation. It explains the geometry of brick layers, how perimeter loops form contours, which sliced G-code signals can be trusted, and how to audit the output.

Working on the Rust files that implement brick layering and scanning, interpreting sliced G-code, and verifying transformed output.

It gives an agent the domain knowledge needed to change this code without misreading its geometric data or G-code. An audit script is included for checking the result.

How erkexzcx/corbel configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to erkexzcx/corbel. 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/erkexzcx/corbel/main/.github/skills/bricklayers/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/erkexzcx/corbel

Made for: Claude Code, Codex.

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/erkexzcx/corbel/bricklayers/github.svg)](https://agentmods.dev/skills/erkexzcx/corbel/bricklayers)

Your own site

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

Per session 124 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 22,128 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. 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	$0.00124	$0.22128
Opus 5.5	$0.00050	$0.08851
Sonnet 5.5	$0.00025	$0.04426
Haiku 4.5	$0.00012	$0.02213

Measured today against content hash a30a140bf79c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

bricklayers scanned grade A with 1 finding 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.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/audit.py, scripts/gcode.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- `fetch_webpage` silently summarises JSON. Use `curl` + `jq` for anything that

.github/skills/bricklayers/SKILL.md · 1,120 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 First seen · 1,120 lines · 124 tokens per session scan A a30a140bf79c

Subscribe to this mod's changes

bricklayers is a skill published in the GitHub repository erkexzcx/corbel (7 stars, last pushed 12d ago), licensed GPL-3.0. It adds 124 tokens to every session and 22,128 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-07.

3d-printing Languages Rust bricklayer zaa

bricklayers next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
bricklayerserkexzcx/corbel	Skill	7	12d ago	GPL-3.0	A	124	Claude Code, Codex
rust-patternsaffaan-m/ECC	Skill	299k	today	MIT	A	28	Claude Code, Kiro
update-v8-versionopeninterpreter/openinterpreter	Skill	69k	3d ago	Apache-2.0	A	86	Codex
dd-code-generationDataDog/pup	Skill	1.0k	today	Apache-2.0	A	16	Claude Code
omh-rustrlaope/oh-my-hermes	Skill	5.2k	today	MIT	A	74	Claude Code, Codex
swiftidebosun-ai/swiftide	Skill	802	yesterday	MIT	A	43	Claude Code, Codex
azure-keyvault-secrets-rustbenjaminasterA/antigravity-awesome-skills	Skill	465	yesterday	MIT	A	0	Claude Code, Codex

corbel: Skill for Claude Code

Borrowing it

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Makes network callslowCapability

The source is not reproduced here

Licensed GPL-3.0

What ships with it

What this file has done since we first saw it

bricklayers compared with skills from other repositories