Compound Engineering is a plugin that organizes software work into brainstorming, planning, implementation, review, and recording lessons for future changes. It is used with AI coding agents including Claude Code, Cursor, and Codex, and the catalogue entries provide parts of its agent, skill, command, and hook workflow.
Borrowing it
Nothing to install: this file belongs to EveryInc/compound-engineering-plugin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/EveryInc/compound-engineering-plugin/main/GEMINI.mdgit clone --depth 1 https://github.com/EveryInc/compound-engineering-pluginWrote 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.
[](https://agentmods.dev/instructions/everyinc/compound-engineering-plugin/gemini-md)<a href="https://agentmods.dev/instructions/everyinc/compound-engineering-plugin/gemini-md"><img src="https://agentmods.dev/badge/instructions/everyinc/compound-engineering-plugin/gemini-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.
<a href="https://agentmods.dev/instructions/everyinc/compound-engineering-plugin/gemini-md"><img src="https://agentmods.dev/badge/instructions/everyinc/compound-engineering-plugin/gemini-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00077 | $0.00077 |
| Opus 5.5 | $0.00031 | $0.00031 |
| Sonnet 5.5 | $0.00015 | $0.00015 |
| Haiku 4.5 | $0.00008 | $0.00008 |
Grade A, and why
compound-engineering-plugin GEMINI.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 1mo 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.
What it actually says
Compound Engineering
This Gemini extension provides the Compound Engineering skill set for planning, review, implementation, debugging, and release workflows.
Use the installed skills when they match the user's request. Treat this file as
runtime context for extension users, not contributor guidance for this source
repository. Do not apply this repository's AGENTS.md maintainer workflow to
the user's project.
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.
- 1mo ago First seen · 10 lines · 77 tokens per session scan A 87d08ba34697
compound-engineering-plugin GEMINI.md is an instructions file published in the GitHub repository EveryInc/compound-engineering-plugin (25,625 stars, last pushed today), licensed MIT. It adds 77 tokens to every session, about $0.0003 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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