What is Ventus AGENTS.md?

Project instructions for Ventus, a Windows desktop web browser built with Rust and Microsoft WebView2. They describe where the browser’s runtime, interface, storage, and browser features are implemented.

Use them before modifying Ventus code, especially its native window handling, embedded web interface, browser state, events, or SQLite storage.

They give a coding agent the project structure and runtime context needed to change the right part of this unusual browser application.

How neura-spheres/Ventus configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to neura-spheres/Ventus. 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/neura-spheres/Ventus/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/neura-spheres/Ventus

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/neura-spheres/ventus/agents-md/github.svg)](https://agentmods.dev/instructions/neura-spheres/ventus/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/neura-spheres/ventus/agents-md"><img src="https://agentmods.dev/badge/instructions/neura-spheres/ventus/agents-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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/neura-spheres/ventus/agents-md"><img src="https://agentmods.dev/badge/instructions/neura-spheres/ventus/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 3,282 This file is loaded in full into every session.

When invoked 3,282 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.

Model	Per session	Once invoked
Fable 5.1	$0.03282	$0.03282
Opus 5.5	$0.01313	$0.01313
Sonnet 5.5	$0.00656	$0.00656
Haiku 4.5	$0.00328	$0.00328

Measured 2mo ago against content hash e4246ff72966, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Ventus 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 2mo 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 · 253 lines

How it starts

The opening of the file, as written. The whole thing — 253 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Ventus Agent Context

Read this before changing the code. Ventus is a Rust desktop browser for Windows, built with Tao, Wry, WebView2, SQLite, and a custom HTML/CSS/JS chrome.

Project Shape

Ventus is not a normal web app. It is a native Rust process that owns a frameless desktop window and several WebView2 child windows.

src/main.rs is only the binary entry point. It calls runtime::run().
src/runtime/ owns process startup, the Tao event loop, WebView creation, Win32 layout/clipping, downloads, update downloads, and dispatching TabActions.
src/app.rs owns AppState, most browser command handling, state serialization for the chrome UI, settings persistence, history/bookmark/download updates, and navigation decisions.
src/ui/chrome.rs builds the chrome document and owns its Rust tests. src/ui/chrome.html contains the browser interface, CSS, and JavaScript compiled into the executable.
src/ui/events.rs defines the IPC contract between JS and Rust with ChromeCommand and AppEvent.
src/browser/ contains tab, workspace, navigation, search-engine, downloads, and split-view models.
src/storage/ contains SQLite setup, migrations, repositories, keychain access, and settings serialization.
src/ai/ contains the AI provider abstraction and OpenAI, OpenRouter, Anthropic, and Ollama adapters.
src/updater.rs checks GitHub releases for neura-spheres/Ventus, downloads a Windows .exe, and applies it through a temporary batch file.
public/ventus.png is the logo source used in the chrome and app icon generation.
build.rs creates assets/logo.ico from the PNG and attaches it as the Windows resource icon.

Some local checkouts may include RULES.md with stricter project style notes. If it is present, read it before coding. Otherwise, follow the conventions in this file and the surrounding source.

Runtime Source Map

The runtime fragments use include! from src/runtime/mod.rs. This keeps them in one Rust module scope, so the refactor does not change private visibility or event-loop captures.

Read the full file on GitHub · 253 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.

2mo ago First seen · 253 lines · 3,282 tokens per session scan A e4246ff72966

Subscribe to this mod's changes

Ventus AGENTS.md is an instructions file published in the GitHub repository neura-spheres/Ventus (3 stars, last pushed 7d ago), licensed MIT. It adds 3,282 tokens to every session, about $0.0131 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 2026-08-31.

Browser automation Frontend

Ventus AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
Ventus AGENTS.mdneura-spheres/Ventus	Instructions file	3	7d ago	MIT	A	3,282	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

Ventus: Instructions file for Codex