Borrowing it
Nothing to install: this file belongs to sachinshelke/codevira. 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/sachinshelke/codevira/main/GEMINI.mdgit clone --depth 1 https://github.com/sachinshelke/codeviraWrote 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/sachinshelke/codevira/gemini-md)<a href="https://agentmods.dev/instructions/sachinshelke/codevira/gemini-md"><img src="https://agentmods.dev/badge/instructions/sachinshelke/codevira/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/sachinshelke/codevira/gemini-md"><img src="https://agentmods.dev/badge/instructions/sachinshelke/codevira/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 | $0.01224 | $0.01224 |
| Opus 5.5 | $0.00490 | $0.00490 |
| Sonnet 5.5 | $0.00245 | $0.00245 |
| Haiku 4.5 | $0.00122 | $0.00122 |
Grade A, and why
codevira 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.
How it starts
The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Codevira — persistent project memory
This project uses Codevira to give every AI coding tool you use shared memory of the project. Decisions, fix history, the structural code graph, and learned style preferences persist across sessions and across IDEs.
When to call which Codevira tool
Call these MCP tools at the moments the description matches your action — they are fast (tens of ms), token-efficient (summary-by-default), and what makes the project's memory available to you.
At the start of every session
get_session_context()— Always call this first. Returns a ~500-token brief: current focus, recent decisions, top open items. Without it you're blind to the project's history.
Before modifying any file
-
get_impact(file_path)— Returns who calls this code (callers, dependents, blast radius). Required before any rename, signature change, or cross-cutting refactor. If callers > a small number, propose a deprecation+migration plan instead of a direct edit. -
search_decisions(query)— Returns prior architectural decisions touching the topic. Decisions withdo_not_revert: trueMUST be respected; if your proposed change conflicts, surface the decision to the user and wait for approval before proceeding.
Before adopting a pattern, library, or naming convention
search_preferences(category)— Returns this project's coding style (snake_case vs camelCase, error-handling idioms, test layout, etc.). Match these unless the user explicitly asks to change them.
When you fix a bug or land an architectural choice
-
record_decision(...)— Capture the why: what alternatives were considered, why this won, what would force a re-examination. A one-line decision is enough; the value compounds across sessions and across the other AI tools the user opens this project in. -
For commits that fix a bug, prefer commit messages starting with
fix:,bug:,hotfix:, orfixes #N. Codevira scans these into a fix-history database used by the Anti-Regression hero to block silent re-introduction of fixed bugs. (v3.7.0: the scan now self-freshens on read —fix_history.lookup()re-scans when git HEAD has advanced — sofix:commits made after the server started are picked up without a restart.)
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 · 83 lines · 1,224 tokens per session scan A a190396f8369
codevira GEMINI.md is an instructions file published in the GitHub repository sachinshelke/codevira (12 stars, last pushed 1mo ago), licensed MIT. It adds 1,224 tokens to every session, about $0.0049 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.