vais-runtime AGENTS.md

vais-runtime AGENTS.md is an instructions file for Codex, OpenCode from VitalyChashin/vais-runtime. It costs 4,915 tokens per session, scanned A, original, Apache-2.0.

General instructions for coding agents working in the vais-runtime repository, focused on thinking first, keeping changes simple, and making only necessary edits.

In plain words
What is it for?
Use them when planning or implementing repository changes, especially when requirements are unclear or several solutions are possible.
Why use it?
They reduce guesses, unnecessary features, and broad changes that could introduce defects or obscure the requested fix.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Claude Code; mentions AGENTS.md; built for aider.

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.

agentmods
npx agentmods add instructions/vitalychashin/vais-runtime/agents-md
Clone the repo
git clone --depth 1 https://github.com/VitalyChashin/vais-runtime

Made for: Codex, OpenCode.

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 vais-runtime AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/vitalychashin/vais-runtime/agents-md.svg)](https://agentmods.dev/instructions/vitalychashin/vais-runtime/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/vitalychashin/vais-runtime/agents-md"><img src="https://agentmods.dev/badge/instructions/vitalychashin/vais-runtime/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 4,915 This file is loaded in full into every session.
When invoked 4,915 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.04915 $0.04915
Opus 5 $0.02457 $0.02457
Sonnet 5 $0.00983 $0.00983
Haiku 4.5 $0.00492 $0.00492

Measured 5d ago against content hash 616be71d07bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

vais-runtime AGENTS.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 5d 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.

AGENTS.md · 326 lines

How it starts

The opening of the file, as written. The whole thing — 326 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — Vais.Agents

This file is the vendor-neutral briefing for AI coding assistants (Claude Code, Cursor, Windsurf, opencode, kiro, Aider, …) working in this repository. Human-facing onboarding lives in README.md and docs/index.md; that content is not duplicated here.

Conform to this file. Where it differs from a general best-practice default, prefer this file — it reflects repo-specific invariants.


Behavioral guidelines to reduce common LLM coding mistakes. Merge with project-specific instructions as needed.

Tradeoff: These guidelines bias toward caution over speed. For trivial tasks, use judgment.

1. Think Before Coding

Don't assume. Don't hide confusion. Surface tradeoffs.

Before implementing:

  • State your assumptions explicitly. If uncertain, ask.
  • If multiple interpretations exist, present them - don't pick silently.
  • If a simpler approach exists, say so. Push back when warranted.
  • If something is unclear, stop. Name what's confusing. Ask.

2. Simplicity First

Minimum code that solves the problem. Nothing speculative.

  • No features beyond what was asked.
  • No abstractions for single-use code.
  • No "flexibility" or "configurability" that wasn't requested.
  • No error handling for impossible scenarios.
  • If you write 200 lines and it could be 50, rewrite it.

Ask yourself: "Would a senior engineer say this is overcomplicated?" If yes, simplify.

3. Surgical Changes

Touch only what you must. Clean up only your own mess.

When editing existing code:

  • Don't "improve" adjacent code, comments, or formatting.
  • Don't refactor things that aren't broken.
  • Match existing style, even if you'd do it differently.
  • If you notice unrelated dead code, mention it - don't delete it.

When your changes create orphans:

  • Remove imports/variables/functions that YOUR changes made unused.
  • Don't remove pre-existing dead code unless asked.

The test: Every changed line should trace directly to the user's request.

Read the full file on GitHub · 326 lines

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. 5d ago First seen · 326 lines · 4,915 tokens per session scan A 616be71d07bd

Subscribe to this mod's changes

vais-runtime AGENTS.md is an instructions file published in the GitHub repository VitalyChashin/vais-runtime (5 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 4,915 tokens to every session, about $0.0246 per session on Opus 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.