assh

assh is a cursor rule for Cursor from izzzzzi/agent-assh. It costs 560 tokens per session, scanned A, original, MIT.

Rules for using assh, a command-line tool for SSH access to remote computers. They cover connection setup, persistent tmux sessions, paginated output, and remote file operations.

In plain words
What is it for?
Use it when connecting to servers, running commands, reading stored output, managing services, or uploading and downloading files.
Why use it?
They provide a consistent way to work on servers while limiting noisy output and adding safeguards around remote operations.

Cursor rule for Cursor

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 rules/izzzzzi/agent-assh/assh
Clone the repo
git clone --depth 1 https://github.com/izzzzzi/agent-assh

Made for: Cursor.

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.

agentmods badge for assh

README.md
[![agentmods](https://agentmods.dev/badge/rules/izzzzzi/agent-assh/assh.svg)](https://agentmods.dev/rules/izzzzzi/agent-assh/assh)
Your own site
<a href="https://agentmods.dev/rules/izzzzzi/agent-assh/assh"><img src="https://agentmods.dev/badge/rules/izzzzzi/agent-assh/assh.svg" alt="Measured on agentmods" height="20"></a>
Per session 560 This file is loaded in full into every session.
When invoked 560 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00560 $0.00560
Opus 5 $0.00280 $0.00280
Sonnet 5 $0.00112 $0.00112
Haiku 4.5 $0.00056 $0.00056

Measured 4d ago against content hash f12465f4f3bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

assh 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 4d 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.

.cursor/rules/assh.mdc · 53 lines

What it actually says

assh — SSH Workflow for LLM Agents

Use assh for SSH work so large remote output stays out of the agent context.

Install when missing:

npm i -g agent-assh
assh version

Agent Algorithm

Need SSH?
├── Have a key file?        → assh connect -H HOST -u USER -i KEY -n NAME
├── Have SSH config alias?  → assh connect --ssh-config ALIAS -n NAME
├── Pasted provider block?  → save to 0600 temp → assh connect-info --file TMP -n NAME → rm
├── First-contact w/ pass?  → assh connect -H HOST -u USER -E PASS_ENV -n NAME
└── Picky gateway?          → assh connect ... --force-pty -n NAME

Quick Reference

Command What
assh session exec -s SID -- "cmd" Run command in tmux session
assh session read -s SID --seq N --limit 50 Read paginated output
assh session close -s SID Close session
assh exec -H HOST -u USER -- "cmd" One-off command, no tmux
assh read --id ID --raw Read stored exec output
assh transfer put/get/read/list/stat/mkdir/rm/mv/sync File operations
assh session service -s SID --action restart --service NAME Service mgmt
assh session exec -s SID -- "docker ps" Docker/db/anything else — via exec
assh session exec-async -s SID -- "cmd" Background job
assh fleet exec -H H1 -H H2 -u root -- "cmd" Multi-host
assh scan -H HOST -u USER Host inventory JSON
assh transfer read -H HOST -u USER --path FILE Read remote file

Security Rules

  • Passwords only through env vars. No --password flag.
  • [REDACTED:type] + "redacted":true = command succeeded, do not retry
  • dangerous_command_requires_confirmation → ask user before --confirm-danger
  • Never put passwords in arguments. Never echo passwords.

See skills/assh/ for detailed references.

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. 4d ago First seen · 53 lines · 560 tokens per session scan A f12465f4f3bd

Subscribe to this mod's changes

assh is a cursor rule published in the GitHub repository izzzzzi/agent-assh (20 stars, last pushed 24d ago), licensed MIT. It adds 560 tokens to every session, about $0.0028 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.