helixent CLAUDE.md

Project instructions for helixent, a small Bun-based library for building ReAct-style AI agent loops. ReAct-style loops let an agent alternate between reasoning and taking actions.

In plain words
What is it for?
Developing or modifying the helixent library and its agent-loop implementation.
Why use it?
They give an agent the project context and rules needed to work safely in this codebase.

Instructions file

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/magiccube/helixent/claude-md
Clone the repo
git clone --depth 1 https://github.com/MagicCube/helixent
Per session 5 This file is loaded in full into every session.
When invoked 5 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00005 $0.00005
Opus 5 $0.00003 $0.00003
Sonnet 5 $0.00001 $0.00001
Haiku 4.5 $0.00001 $0.00001

Measured yesterday against content hash 336cc4fbf19b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

helixent 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 yesterday.

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 · 2 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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.

  1. yesterday First seen · 2 lines · 5 tokens per session scan A 336cc4fbf19b

Subscribe to this mod's changes

helixent CLAUDE.md is an instructions file published in the GitHub repository MagicCube/helixent (654 stars, last pushed 3mo ago), with no licence file. It adds 5 tokens to every session, about $0.0000 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.