What is cua CLAUDE.md?

Project instructions for trycua/cua, an open-source system for running computer-use agents across different operating systems and testing or creating training data.

Working on the cua codebase, including its drivers, computer-use fleets, benchmarks, training, and evaluation workflows.

It gives a coding agent project-specific guidance when working in this repository.

How trycua/cua configures Claude Code

About the project

trycua/cua is a toolkit for building and testing AI agents that operate computers by seeing screens, clicking controls, and typing across operating systems and virtual machines. It serves agent developers, benchmark authors, and teams generating training data for computer-use models. Catalogue add-ons provide ways to operate Cua drivers and related agent workflows.

trycua/cua · 31,822 stars · on GitHub · cua.ai

Reuse

Borrowing it

Nothing to install: this file belongs to trycua/cua. 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/trycua/cua/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/trycua/cua

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/trycua/cua/claude-md/github.svg)](https://agentmods.dev/instructions/trycua/cua/claude-md)

Your own site

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

Per session 11 This file is loaded in full into every session.

When invoked 11 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	$0.00011	$0.00011
Opus 5.5	$0.00004	$0.00004
Sonnet 5.5	$0.00002	$0.00002
Haiku 4.5	$0.00001	$0.00001

Measured 2mo ago against content hash 02570c5da5a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cua 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 · 4 lines

What it actually says

Claude Code project guidance

@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.

2mo ago First seen · 4 lines · 11 tokens per session scan A 02570c5da5a2

Subscribe to this mod's changes

cua CLAUDE.md is an instructions file published in the GitHub repository trycua/cua (31,822 stars, last pushed today), licensed MIT. It adds 11 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.

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cua CLAUDE.md next to 6 instructions from other repositories
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cua CLAUDE.mdtrycua/cua	Instructions file	32k	today	MIT	A	11	Claude Code
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cua: Instructions file for Claude Code