agentmods.dev

ara3d-sdk CLAUDE.md

ara3d-sdk CLAUDE.md is an instructions file for coding agents from ara3d/ara3d-sdk. It costs 727 tokens per session, scanned A, original, MIT.

A project guide for the ara3d-sdk, a software development kit that uses output from the Plato compiler. It explains the project layout, build requirements, work plan, and coding rules.

In plain words
What is it for?
Use it when changing the SDK’s handwritten C# geometry code, working with Plato-generated files, or checking where source files, plans, and trackers belong.
Why use it?
It helps coding agents avoid editing generated or copied files, using the wrong build dependencies, or losing track of the current project plan.

Instructions file

not rated 41 15d ago A scan 727 tokens original MIT
View the source file ara3d/ara3d-sdk
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.

agentmods
npx agentmods add instructions/ara3d/ara3d-sdk/claude-md
Clone the repo
git clone --depth 1 https://github.com/ara3d/ara3d-sdk

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 ara3d-sdk CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/ara3d/ara3d-sdk/claude-md.svg)](https://agentmods.dev/instructions/ara3d/ara3d-sdk/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/ara3d/ara3d-sdk/claude-md"><img src="https://agentmods.dev/badge/instructions/ara3d/ara3d-sdk/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 727 This file is loaded in full into every session.
When invoked 727 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original 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.

ModelPer sessionOnce invoked
Fable 5 $0.00727 $0.00727
Opus 5 $0.00364 $0.00364
Sonnet 5 $0.00145 $0.00145
Haiku 4.5 $0.00073 $0.00073

Measured 4d ago against content hash a5d09c23ee14, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ara3d-sdk CLAUDE.md 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.

CLAUDE.md · 40 lines

How it starts

The opening of the file, as written. The whole thing — 40 lines — stays where its author put it; the contents beside it link to each section on GitHub.

This SDK consumes Plato output; it must build standalone without the Plato toolchain. Plato compiler + stdlib source live in ../submodules/Plato (see its CLAUDE.md). Plan: ../docs/plato-execution-plan-2026-07-09.md; live work in ../tracker/. (docs/plato-roadmap.md was superseded and archived 2026-07-16 — now docs/archive/plato-roadmap.md, historical only.)

C# style: before writing/editing handwritten C# (e.g. src/Ara3D.Geometry/), follow the csharp-style skill — full reference ../docs/csharp-style-guide-for-agents.md, enforceable subset in the root .editorconfig. Does NOT apply to generated/synced code (Plato.Generated/, Plato.Intrinsics/, Ara3D.IO.SharpGLTF/).

  • src/Plato.Generated/ — checked-in generated C# (V1, instance-member style). Produced by ..\..\tools\regen-plato.ps1 -Apply; NEVER hand-edit (drift is diff-gated in CI).
  • src/Plato.Intrinsics/ — SYNCED COPY (see its README). Source of truth is submodules/Plato/Plato.Intrinsics; sync via regen-plato.ps1 -Apply. Never edit here.
  • src/Ara3D.Geometry/ — handwritten geometry algorithms layered on the generated code (imports both shared projects). Known name collisions with Plato solids: Sphere, Cylinder, Curves (resolved at V2 adoption). Organized into semantic subfolders (Primitives/, MeshConstruction/, SpatialQueries/, etc.; see its README.md folder map). Folders are organizational only — namespace stays flat Ara3D.Geometry. Place new files in the matching domain folder, not the root.
  • tests/Ara3D.SDK.GeometryTests — expected 15/15. tests/Ara3D.SDK.Benchmarks — BenchmarkDotNet baseline (baseline-2026-07-07.md); don't modify to measure new code — build scratch probes instead.
  • tools/ApiSnapshot + tools/api-snapshot.ps1 — deterministic public-API dump → docs/api/plato-generated-api-baseline.txt (8,907 lines). Re-run after any generated-surface change.
  • Conformance suites live in the Plato repo (submodules/Plato/conformance), not here.

Read the full file on GitHub · 40 lines

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 · 40 lines · 727 tokens per session scan A a5d09c23ee14

Subscribe to this mod's changes

ara3d-sdk CLAUDE.md is an instructions file published in the GitHub repository ara3d/ara3d-sdk (41 stars, last pushed 15d ago), licensed MIT. It adds 727 tokens to every session, about $0.0036 per session on Opus 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.

Related

Other instructions, from other repositories

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

spec-kit AGENTS.md

AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.

github/spec-kit · 7,104 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,182 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,345 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).

microsoft/vscode · 5,001 tokens

next.js AGENTS.md

Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens