What is prompt-tower CLAUDE.md?

A project instruction file for Claude Code covering the development guide, system design, source folders, and the project's API and model areas.

Use it when working on backnotprop/prompt-tower and needing guidance about its architecture, folders, API, or models.

It gives Claude Code repository-specific context so it can understand where key code and documentation belong.

How backnotprop/prompt-tower configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to backnotprop/prompt-tower. 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/backnotprop/prompt-tower/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/backnotprop/prompt-tower

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/backnotprop/prompt-tower/claude-md/github.svg)](https://agentmods.dev/instructions/backnotprop/prompt-tower/claude-md)

Your own site

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

Per session 429 This file is loaded in full into every session.

When invoked 429 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 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	$0.00429	$0.00429
Opus 5.5	$0.00172	$0.00172
Sonnet 5.5	$0.00086	$0.00086
Haiku 4.5	$0.00043	$0.00043

Measured 2mo ago against content hash 2d0f7b647e7b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

prompt-tower 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 2mo 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 · 53 lines

The source is not reproduced here

Licensed AGPL-3.0

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

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.

2mo ago First seen · 53 lines · 429 tokens per session scan A 2d0f7b647e7b

Subscribe to this mod's changes

prompt-tower CLAUDE.md is an instructions file published in the GitHub repository backnotprop/prompt-tower (392 stars, last pushed 10mo ago), licensed AGPL-3.0. It adds 429 tokens to every session, about $0.0017 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.

Building agents Writing and docs code-assistant llm-context llm-prompting prompt-engineering prompt-generator vscode-extension

prompt-tower CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
prompt-tower CLAUDE.mdbacknotprop/prompt-tower	Instructions file	392	10mo ago	AGPL-3.0	A	429	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
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vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
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prompt-tower: Instructions file for Claude Code