xling: Instructions file for Codex

AGENTS.md

xling AGENTS.md is an instructions file for Codex, OpenCode from kingsword09/xling. It costs 3,157 tokens per session, scanned D, original, Apache-2.0.

Development instructions for xling, a TypeScript command-line tool with a React interface. It uses Bun as its runtime and package runner, Vitest for tests, and oclif for command-line commands and help.

In plain words
What is it for?
Use it when changing xling’s CLI, React UI, Vite build, TypeScript logic, tests, linting, formatting, or development server.
Why use it?
It fixes the project’s required commands, versions, frontend conventions, build process, linting, formatting, and testing approach so changes can be checked consistently.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: reads .claude/ paths; mentions Claude Code; reads ~/.codex paths.

This is kingsword09/xling's own configuration. It tells Codex and OpenCode how to work on xling 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 xling configures →

Reuse

Borrowing it

Nothing to install: this file belongs to kingsword09/xling. 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/kingsword09/xling/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/kingsword09/xling

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 xling AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/kingsword09/xling/agents-md/github.svg)](https://agentmods.dev/instructions/kingsword09/xling/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/kingsword09/xling/agents-md"><img src="https://agentmods.dev/badge/instructions/kingsword09/xling/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.

agentmods 80×15 button for xling AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/kingsword09/xling/agents-md"><img src="https://agentmods.dev/badge/instructions/kingsword09/xling/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,157 This file is loaded in full into every session.
When invoked 3,157 The same file — it is already loaded in full.
Security scan D 3 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 $0.03157 $0.03157
Opus 5.5 $0.01263 $0.01263
Sonnet 5.5 $0.00631 $0.00631
Haiku 4.5 $0.00316 $0.00316

Measured 2mo ago against content hash bd4b47754175, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade D, and why

xling AGENTS.md scanned grade D with 3 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

1. Install Bun (recommended: `curl -fsSL https://bun.sh/install | bash`).

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

- **Config files**: `~/.claude/settings.json`, `.claude/settings.json`, `.claude/settings.local.json`

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

1. Install Bun (recommended: `curl -fsSL https://bun.sh/install | bash`).
AGENTS.md · 297 lines

How it starts

The opening of the file, as written. The whole thing — 297 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Project Conventions

  • Runtime: Bun (>= 1.3.2). Run every development, build, and test script via bun.
  • Language: Business logic lives in TypeScript. If a JavaScript helper is required, document the rationale.
  • Build System: tsdown (powered by rolldown) compiles and bundles the CLI.
  • Linting: oxlint provides fast, Rust-based lint and type checks (--type-aware --type-check enables full TypeScript type checking, replacing tsc --noEmit).
  • Formatting: oxfmt enforces the shared Prettier-compatible style.
  • Testing: Vitest (invoked through bun test) covers unit and integration flows.
  • CLI Framework: oclif powers subcommands, flag validation, and auto-generated help.

UI Stack

  • Frontend: React 19 + React DOM 19; avoid legacy class components and keep hooks idiomatic to the current major.
  • Build: Vite 7 with Tailwind CSS 4 builds src/ui into dist/ui; bun run build already triggers bun run build:ui, or run bun run build:ui directly when iterating on the frontend.
  • Dev Server: bunx vite dev --config vite.config.ts --host --port 3000 serves the React UI; keep the port in sync with discuss --ui (defaults to 3000).
  • Static Assets: The discuss server serves files from dist/ui; rebuild after UI changes so the CLI can load the latest bundle.

Environment Setup

  1. Install Bun (recommended: curl -fsSL https://bun.sh/install | bash).
  2. Run bun install at the repo root.
  3. Compile the project with bun run build.
  4. Verify the CLI by running ./bin/run.js --help.
  5. Run bun lint and bun fmt to ensure lint/format success.
  6. Run bun test or bun test --watch to confirm the test suite.

Development Rules

  • Declare new npm scripts inside package.json and execute them with bun run <script>.
  • Keep TypeScript in strict mode and expose types for every public API.
  • Ship Vitest coverage with each new feature (call out temporary gaps in the PR if needed).
  • Follow SOLID: single responsibility, open/closed, Liskov substitution, interface segregation, dependency inversion.

Read the full file on GitHub · 297 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. 2mo ago First seen · 297 lines · 3,157 tokens per session scan D bd4b47754175

Subscribe to this mod's changes

xling AGENTS.md is an instructions file published in the GitHub repository kingsword09/xling (2 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 3,157 tokens to every session, about $0.0126 per session on Opus 5.5. A static security scan graded it D with 3 findings (downloads and executes remote code, reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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