A connection setup command for the Yale SOM high-performance computing cluster that keeps work available after laptop sleep or unreliable Wi-Fi. It uses secure shell connections and persistent terminal sessions.

Use it to configure SSH keep-alive settings, choose between working from the login node or laptop, start tmux or another persistent session, and reconnect later.

It prevents a dropped connection from ending your working session while reminding you that heavy computation must run through the cluster’s job scheduler.

hpc-connect — Command for Claude Code by yale-som-hpc

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.

Clone the repo

git clone --depth 1 https://github.com/yale-som-hpc/claude-code-marketplace

Made for: Claude Code.

Or install hpc, the plugin that ships this one along with the rest of its 23 skills, 3 commands.

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/commands/yale-som-hpc/claude-code-marketplace/hpc-connect/github.svg)](https://agentmods.dev/commands/yale-som-hpc/claude-code-marketplace/hpc-connect)

Your own site

<a href="https://agentmods.dev/commands/yale-som-hpc/claude-code-marketplace/hpc-connect"><img src="https://agentmods.dev/badge/commands/yale-som-hpc/claude-code-marketplace/hpc-connect/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/commands/yale-som-hpc/claude-code-marketplace/hpc-connect"><img src="https://agentmods.dev/badge/commands/yale-som-hpc/claude-code-marketplace/hpc-connect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 251 The whole file, excluding the scripts and references it only reads on demand.

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	$0.00015	$0.00251
Opus 5.5	$0.00006	$0.00100
Sonnet 5.5	$0.00003	$0.00050
Haiku 4.5	$0.00002	$0.00025

Measured 2mo ago against content hash 0bad5ef0e8d7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

hpc-connect 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.

plugins/hpc/commands/hpc-connect.md · 16 lines

What it actually says

Help me connect to the Yale SOM HPC cluster so my work survives a dropped laptop connection.

Follow the staying-connected and connecting-securely skills. Steps:

Ask whether I want to run Claude Code on the login node (Model A) or on my laptop driving the cluster (Model B) — explain the difference in one sentence each if I'm unsure.
Check my ~/.ssh/config and add the recommended baseline (ServerAliveInterval, ControlMaster) if missing.
For Model A: set me up to run inside tmux and show me the detach/reattach commands.
For Model B: set up a persistent zmx SSH session if zmx is installed, otherwise show me the self-contained ssh hpc '...' pattern.
Remind me of the footprint rule: a persistent session is a shell, not a compute host — heavy work goes through srun/sbatch.

Verify which tools are actually installed (command -v tmux zellij zmx autossh) before recommending one.

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 · 16 lines · 15 tokens per session scan A 0bad5ef0e8d7

Subscribe to this mod's changes

hpc-connect is a command published in the GitHub repository yale-som-hpc/claude-code-marketplace (5 stars, last pushed 3mo ago), licensed Unlicense. It adds 15 tokens to every session and 251 once invoked, about $0.0001 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 2026-08-31.

Cloud DevOps and cloud

hpc-connect next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
hpc-connectyale-som-hpc/claude-code-marketplace	Command	5	3mo ago	Unlicense	A	15	Claude Code
cost-optimizewshobson/agents	Command	42k	yesterday	MIT	A	26	Claude Code
deploybutterbase-ai/butterbase-skills	Command	535	6d ago	MIT	A	20	Claude Code
envvercel/vercel-plugin	Command	326	yesterday	none	A	35	Claude Code
firebase-publishPierry/harness-kit	Command	4	1mo ago	MIT	A	20	Claude Code
scanprajapatimehul/claude-aws-cost-saver	Command	24	4mo ago	MIT	A	6	Claude Code
migrationdatabayt/hogwarts	Command	18	3d ago	none	A	4	Claude Code