Borrowing it
Nothing to install: this file belongs to termio-sh/termio. 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/termio-sh/termio/main/AGENTS.mdgit clone --depth 1 https://github.com/termio-sh/termioWrote 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/termio-sh/termio/agents-md)<a href="https://agentmods.dev/instructions/termio-sh/termio/agents-md"><img src="https://agentmods.dev/badge/instructions/termio-sh/termio/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.
<a href="https://agentmods.dev/instructions/termio-sh/termio/agents-md"><img src="https://agentmods.dev/badge/instructions/termio-sh/termio/agents-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 | $0.03415 | $0.03415 |
| Opus 5.5 | $0.01366 | $0.01366 |
| Sonnet 5.5 | $0.00683 | $0.00683 |
| Haiku 4.5 | $0.00342 | $0.00342 |
Grade A, and why
termio 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 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 — 271 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides guidance to AI coding agents working in this repository.
Core rules
- termio is a deliberately small, focused tool. Keep the surface area minimal; prefer clarity over cleverness. Do not add features that were not requested.
- Keep changes scoped to the request. Do not refactor unrelated code.
- Respect existing worktree changes. Do not revert the user's edits unless asked.
- Prefer editing existing files over creating new ones. Do not add new documentation files unless requested.
- Commit or push only when the user asks.
- Never add an SPM dependency that ships resources — see "Dependencies" below. This has shipped as a release-only crash twice.
- Read
CONTRIBUTING.mdfor the long-form version of the build, branching, and release flow. This file is the short, agent-facing subset.
Repo overview
termio is a native macOS terminal app for AI coding agents: Swift + AppKit/SwiftUI on top of libghostty (Ghostty's terminal core). It is free software with no backend, no account, and no license server.
Sources/termio— the macOS app (SwiftPM executable target). Organized by feature:Terminal,Sidebar,TermioStore,Agents,Companion,Git,FileBrowser,Editor,Issues,Settings,Welcome,Info,CommandPalette,Keybindings,Browser,Theme,App.Shared/— SwiftPM package (TermioShared) shared by the Mac app and the iOS companion. The companion wire protocol lives here so both ends stay in sync.ios/— the iOS companion app (TermioMobile.xcodeproj, schemeTermioMobile).web/landing— the marketing site (Next.js + Tailwind + shadcn/ui), deployed to Vercel.scripts/—build-app.sh(packages the.app),termio(the CLI that drives a running app over its control socket), plus icon and stats helpers.packaging/—Info.plist, entitlements, icon assets for the bundle.docs/— design docs, RFCs, runbooks, bug handoffs, essays. See "Docs" below.skills/— agent skills. See "Skills" below.
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 Changed · +5 lines · +99 tokens per session 4317501cab17
- 1mo ago Changed · +1 lines · +23 tokens per session c87bdbeecdc9
- 1mo ago First seen · 265 lines · 3,293 tokens per session scan A f2e0ec37a73d
termio AGENTS.md is an instructions file published in the GitHub repository termio-sh/termio (638 stars, last pushed today), licensed MIT. It adds 3,415 tokens to every session, about $0.0137 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.