What is SHAFT_ENGINE CLAUDE.md?

A project instruction file for SHAFT_ENGINE that tells agents to use ChaosEngine and a code knowledge graph. A knowledge graph maps relationships between code files and concepts.

It helps agents query relationships, trace how concepts connect across the codebase, navigate project documentation, and refresh the code graph after edits.

It provides a required startup workflow and a focused way to investigate codebase questions without reading unrelated files. It also keeps the graph updated after code changes.

How ShaftHQ/SHAFT_ENGINE configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to ShaftHQ/SHAFT_ENGINE. 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/ShaftHQ/SHAFT_ENGINE/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/ShaftHQ/SHAFT_ENGINE

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/instructions/shafthq/shaft_engine/claude-md/github.svg)](https://agentmods.dev/instructions/shafthq/shaft_engine/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/shafthq/shaft_engine/claude-md"><img src="https://agentmods.dev/badge/instructions/shafthq/shaft_engine/claude-md/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/instructions/shafthq/shaft_engine/claude-md"><img src="https://agentmods.dev/badge/instructions/shafthq/shaft_engine/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

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. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00005	$0.00005
Opus 5.5	$0.00002	$0.00002
Sonnet 5.5	$0.00001	$0.00001
Haiku 4.5	$0.00001	$0.00001

Measured 1mo ago against content hash 336cc4fbf19b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

SHAFT_ENGINE 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 1mo 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 · 2 lines

What it actually says

@AGENTS.md

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.

1mo ago Changed · -3 lines · -111 tokens per session 336cc4fbf19b
1mo ago Changed · +20 tokens per session 028c36906704
1mo ago Changed · +4 tokens per session 95c729a0948d
1mo ago Changed · +9 tokens per session 8da5366d7a9c
1mo ago Changed · -15 lines · -202 tokens per session 5e84d066d327
2mo ago First seen · 20 lines · 285 tokens per session scan A a6a5cfabff15

Subscribe to this mod's changes

SHAFT_ENGINE CLAUDE.md is an instructions file published in the GitHub repository ShaftHQ/SHAFT_ENGINE (418 stars, last pushed yesterday), licensed MIT. It adds 5 tokens to every session, about $0.0000 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.

E2E testing Java automation automation-engine test-automation test-automation-framework testing-tools

SHAFT_ENGINE CLAUDE.md next to 6 instructions from other repositories
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SHAFT_ENGINE: Instructions file for Claude Code