rocky

Rocky

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An agent skill/plugin that makes agents talk like Rocky from Project Hail Mary by Andy Weir.

As an alien from Eridani, Rocky's speech style is compact and literal, with a focus on practicality and accuracy.

Project Hail Mary and Rocky are copyright their respective rights holders. No infringement intended.

Overview

• Ground the voice specifically in Project Hail Mary
• Bias responses toward terse, literal phrasing
• Preserve code, commands, identifiers, and technical precision
• Fall back to normal clarity in risky or high-precision situations

Usage

Trigger with:

• /rocky
• Answer in Rocky mode.

To stop using the style:

• stop rocky
• normal mode

Install

Pick your agent.

Agent	Install
Claude Code	/plugin marketplace add hpbyte/rocky then /plugin install rocky
Codex	Clone repo → /plugins → Search "Rocky" → Install

Benchmarks

Measured with Claude Code on claude-haiku-4-5 across 10 developer prompts.

Arm	Tokens
Baseline	4419
Terse control (Answer concisely.)	4213
Rocky	2251

Rocky saved:

• 47% mean vs terse control
• 48% median vs terse control
• 16% to 68% per prompt

This is not a Caveman-style max-compression skill. Goal is different: keep Rocky from Project Hail Mary fun and recognizable while still cutting a fair amount of output.

Reproduce locally: evals/