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gopherstack: Instructions file for Gemini CLI

GEMINI.md

gopherstack GEMINI.md is an instructions file for Gemini CLI from BlackbirdWorks/gopherstack. It costs 261 tokens per session, scanned A, original, MIT.

Project-specific instructions for developing GopherStack with the Gemini command-line tool. They set a terse response style and require checks for development-only tools such as Go, Terraform, and browser helpers.

In plain words
What is it for?
Use them when working on GopherStack to follow its response rules, check development integrations, and switch between concise and normal explanations.
Why use it?
They keep agent responses consistent and help ensure the project’s development tools are available without putting those tools into the product itself.

Instructions file for Gemini CLI

Written for Gemini CLI: the file is GEMINI.md.

This is BlackbirdWorks/gopherstack's own configuration. It tells Gemini CLI how to work on gopherstack itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything gopherstack configures →

not rated 17repo yesterday A scan 261 tokens original MIT
View source ↗ BlackbirdWorks/gopherstack
Reuse

Borrowing it

Nothing to install: this file belongs to BlackbirdWorks/gopherstack. 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/BlackbirdWorks/gopherstack/main/GEMINI.md
Clone the repo
git clone --depth 1 https://github.com/BlackbirdWorks/gopherstack

Made for: Gemini CLI.

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 gopherstack GEMINI.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/blackbirdworks/gopherstack/gemini-md/github.svg)](https://agentmods.dev/instructions/blackbirdworks/gopherstack/gemini-md)
Your own site
<a href="https://agentmods.dev/instructions/blackbirdworks/gopherstack/gemini-md"><img src="https://agentmods.dev/badge/instructions/blackbirdworks/gopherstack/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.

agentmods 80×15 button for gopherstack GEMINI.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/blackbirdworks/gopherstack/gemini-md"><img src="https://agentmods.dev/badge/instructions/blackbirdworks/gopherstack/gemini-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 261 This file is loaded in full into every session.
When invoked 261 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00261 $0.00261
Opus 5.5 $0.00104 $0.00104
Sonnet 5.5 $0.00052 $0.00052
Haiku 4.5 $0.00026 $0.00026

Measured yesterday against content hash 600e90c51f8e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gopherstack 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 yesterday.

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.

GEMINI.md · 22 lines

What it actually says

Respond terse like smart caveman. All technical substance stay. Only fluff die.

Rules:

  • Drop: articles (a/an/the), filler (just/really/basically), pleasantries, hedging
  • Fragments OK. Short synonyms. Technical terms exact. Code unchanged.
  • Pattern: [thing] [action] [reason]. [next step].
  • Not: "Sure! I'd be happy to help you with that."
  • Yes: "Bug in auth middleware. Fix:"

Switch level: /caveman lite|full|ultra|wenyan Stop: "stop caveman" or "normal mode"

Auto-Clarity: drop caveman for security warnings, irreversible actions, user confused. Resume after.

Boundaries: code/commits/PRs written normal.

Dev MCP servers (read on session start)

.mcp.json at repo root wires dev-only MCPs: gopls (Go symbols), terraform (provider docs), playwright (dashboard browser). Dev tooling only — never embedded in the gopherstack runtime binary.

On session start: run task dev-mcp-check. If CLIs missing, run task dev-mcp-install. Details: .agent/rules/dev-mcp.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.

  1. yesterday First seen · 22 lines · 261 tokens per session scan A 600e90c51f8e

Subscribe to this mod's changes

gopherstack GEMINI.md is an instructions file published in the GitHub repository BlackbirdWorks/gopherstack (17 stars, last pushed yesterday), licensed MIT. It adds 261 tokens to every session, about $0.0010 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 2026-11-07.

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