What is codex-launcher AGENTS.md?

Development instructions for a Kotlin plugin that adds Codex-related actions to IntelliJ-based IDEs. They explain the source layout, Gradle commands, coding style and tests.

Use them when changing plugin actions, settings or services, or when running its JUnit tests and creating an installable plugin package.

They tell an agent how the plugin is organized and how to build, test, package and manually run it without guessing.

How x0x0b/codex-launcher configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to x0x0b/codex-launcher. 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/x0x0b/codex-launcher/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/x0x0b/codex-launcher

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/x0x0b/codex-launcher/agents-md/github.svg)](https://agentmods.dev/instructions/x0x0b/codex-launcher/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/x0x0b/codex-launcher/agents-md"><img src="https://agentmods.dev/badge/instructions/x0x0b/codex-launcher/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/x0x0b/codex-launcher/agents-md"><img src="https://agentmods.dev/badge/instructions/x0x0b/codex-launcher/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 619 This file is loaded in full into every session.

When invoked 619 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	$0.00619	$0.00619
Opus 5.5	$0.00248	$0.00248
Sonnet 5.5	$0.00124	$0.00124
Haiku 4.5	$0.00062	$0.00062

Measured 2mo ago against content hash 69935e06ff44, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codex-launcher 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 · 35 lines

How it starts

The opening of the file, as written. The whole thing — 35 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repository Guidelines

Project Structure & Module Organization

src/main/kotlin/com/github/x0x0b/codexlauncher/ — plugin actions (*Action), terminal service, CLI arg builder, settings UI/options.
src/main/resources/META-INF/plugin.xml — plugin metadata; icons live in src/main/resources/icons/.
src/test/kotlin/com/github/x0x0b/codexlauncher/ — JUnit tests mirroring main packages (e.g., CodexArgsBuilderTest, InsertPayloadResolverTest).
Build outputs land in build/; packaged zips in build/distributions/.

Build, Test, and Development Commands

./gradlew buildPlugin — compile and package the IntelliJ plugin zip into build/distributions/.
./gradlew runIde — launch the sandbox IDE with the plugin for manual checks.
./gradlew test — run the JUnit suite; use --tests com.github.x0x0b.codexlauncher.* to target classes.
./gradlew clean — remove build outputs before a fresh run (optional).

Coding Style & Naming Conventions

Kotlin 2.2, JVM 21; follow standard Kotlin style (4-space indent, trailing commas where helpful, immutable vals preferred).
Public APIs and services should include concise KDoc; logger via com.intellij.openapi.diagnostic.logger.
Classes/objects use PascalCase; enums like Model, Mode; actions end with Action; tests end with Test.
Keep IntelliJ platform threading rules in mind (UI changes on EDT; services stay light).

Testing Guidelines

Tests live under src/test/kotlin and use JUnit 4 (@Test); mirror package paths.
Favor fast, isolated unit tests for CLI arg building, action routing, and terminal handling.
When adding behavior, pair with a regression test; name methods descriptively (methodName_condition_expected).
For manual verification, prefer ./gradlew runIde to exercise toolbar actions and settings UI.

Commit & Pull Request Guidelines

Follow recent Conventional Commit style seen in history (feat:, fix:, optional issue refs like (#95)); keep subject in imperative, ≤72 chars.
Include PR summary, rationale, and testing notes; attach screenshots/GIFs for UI changes and mention affected IDE versions (targets 2024.2+).
Update plugin.xml change notes when user-facing behavior shifts; align version in build.gradle.kts as needed.

Read the full file on GitHub · 35 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 · 35 lines · 619 tokens per session scan A 69935e06ff44

Subscribe to this mod's changes

codex-launcher AGENTS.md is an instructions file published in the GitHub repository x0x0b/codex-launcher (56 stars, last pushed 2mo ago), licensed MIT. It adds 619 tokens to every session, about $0.0025 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.

codex codex-cli intellij-plugin jetbrains-plugin

codex-launcher AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
codex-launcher AGENTS.mdx0x0b/codex-launcher	Instructions file	56	2mo ago	MIT	A	619	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

codex-launcher: Instructions file for Codex