helpers: Instructions file for Claude Code

CLAUDE.md

helpers CLAUDE.md is an instructions file for Claude Code from causify-ai/helpers. It costs 1,340 tokens per session, scanned A, original, Apache-2.0.

Repository instructions for the causify-ai/helpers Python library. They describe its utility modules, project structure, integrations, caching tools, command-line helpers, and testing components.

In plain words
What is it for?
Use them when modifying the helpers repository, especially when working with utility modules, data-processing code, external services, Docker, or tests.
Why use it?
They give a coding agent the project context needed to make changes that fit the repository. Without them, work may overlook existing modules or testing conventions.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is causify-ai/helpers's own configuration. It tells Claude Code how to work on helpers itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything helpers configures →

Reuse

Borrowing it

Nothing to install: this file belongs to causify-ai/helpers. 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/causify-ai/helpers/master/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/causify-ai/helpers

Made for: Claude Code.

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README.md
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Per session 1,340 This file is loaded in full into every session.
When invoked 1,340 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.01340 $0.01340
Opus 5 $0.00670 $0.00670
Sonnet 5 $0.00268 $0.00268
Haiku 4.5 $0.00134 $0.00134

Measured 5d ago against content hash eb2f5e7a3046, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

helpers 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 5d 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 · 156 lines

How it starts

The opening of the file, as written. The whole thing — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Repository Architecture

Core Structure

This is the helpers repository, a foundational Python library providing utilities, development tools, and infrastructure components for a larger ecosystem. The codebase follows a modular architecture with these key components:

  • helpers/: Core utility modules (100+ modules) following h<name> naming convention organized into categories:
    • Core Infrastructure: hdbg, hio, hsystem, hserver, henv - debugging, I/O, system operations
    • Data Processing: hpandas, hdataframe, hnumpy, hparquet, hcsv - data manipulation and analysis
    • Testing Framework: hunit_test, hpytest, hcoverage, hplayback - comprehensive testing utilities
    • External Services: haws, hs3, hgit, hdocker, hchatgpt, hllm - cloud and tool integrations
    • Caching & Performance: hcache, hcache_simple, hjoblib, htimer - performance optimization
    • Command-line & Parsing: hparser: argument parsing and CLI utilities
    • Text & Markdown: hmarkdown* family, hstring, htext_protect - text processing and markdown utilities
  • config_root/: Configuration system with Config class and builders for hierarchical configuration management
  • linters/: Pluggable linting framework with custom linters for code quality (amp_black, amp_isort, etc.)
  • dev_scripts_helpers/: Development automation scripts organized by functionality (git, docker, documentation, etc.)

Task System Architecture

The repository uses pyinvoke for task automation with a modular task system:

  • tasks.py: Entry point that imports all task modules
  • helpers/lib_tasks_*.py: Task modules organized by domain (docker, git, pytest, lint, etc.)
  • Tasks are decorated with @task and accessible via invoke <task_name>

Testing Architecture

Read the full file on GitHub · 156 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. 5d ago First seen · 156 lines · 1,340 tokens per session scan A eb2f5e7a3046

Subscribe to this mod's changes

helpers CLAUDE.md is an instructions file published in the GitHub repository causify-ai/helpers (145 stars, last pushed yesterday), licensed Apache-2.0. It adds 1,340 tokens to every session, about $0.0067 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 2026-09-03.

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