pi-tmux-task: Instructions file for Codex

AGENTS.md

pi-tmux-task AGENTS.md is an instructions file for Codex, OpenCode from ttttmr/pi-tmux-task. It costs 3,041 tokens per session, scanned A, original, MIT.

Project-specific instructions for pi-tmux-task, a Pi extension that manages background work through tmux, a terminal tool for running multiple sessions and windows. They explain the project’s task model, code structure, and runtime behavior.

In plain words
What is it for?
Use them when developing or reviewing task scheduling, tmux windows, task notifications, session tracking, or the extension’s project structure.
Why use it?
They help the coding agent understand how background tasks are represented, monitored, rerun, and reported within a Pi session.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is ttttmr/pi-tmux-task's own configuration. It tells Codex and OpenCode how to work on pi-tmux-task 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 pi-tmux-task configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ttttmr/pi-tmux-task. 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/ttttmr/pi-tmux-task/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ttttmr/pi-tmux-task

Made for: Codex, OpenCode.

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Per session 3,041 This file is loaded in full into every session.
When invoked 3,041 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.03041 $0.03041
Opus 5.5 $0.01216 $0.01216
Sonnet 5.5 $0.00608 $0.00608
Haiku 4.5 $0.00304 $0.00304

Measured 1mo ago against content hash ceb068db6c1f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pi-tmux-task 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.

AGENTS.md · 267 lines

How it starts

The opening of the file, as written. The whole thing — 267 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PROJECT KNOWLEDGE BASE

Generated: 2026-05-20
Updated: 2026-05-22

OVERVIEW

Project: pi-tmux-task

This repository is a Pi extension package for Pi-session-scoped background task management. It does not implement its own scheduler. Instead, it defines an agent-facing background-task convention and backs that convention with tmux plus extension-side observability.

Core product idea

  1. Skill guidance for background task management

    • Bundle a skill that teaches the agent when to treat work as a long-running background task instead of a foreground command.
    • Standardize on one Pi session = one task tmux session and one logical task = one tmux window / task slot.
    • Encourage meaningful task naming, reuse of the same task slot on rerun when possible, and follow-up by window_id when precise low-level targeting is useful.
  2. Code-level runtime support

    • Compute a stable Pi-session-scoped tmux session name and inject it into bash calls as PI_TMUX_SESSION.
    • Provide UI surfaces to inspect and manage tmux task windows.
    • Poll tmux state, diff snapshots into semantic task events, and push plain-text notifications back into the active Pi conversation.

Current stack

  • Language: TypeScript + ESM
  • Runtime: Node.js
  • Host framework: @earendil-works/pi-coding-agent
  • UI: @earendil-works/pi-tui
  • Shell integration: tmux + bash helper scripts
  • Tests: lightweight Node/bash scripts under test/

STRUCTURE

.
├── AGENTS.md
├── docs/
│   ├── architecture.md
│   └── tmux-task-event-flow.md
├── package.json
├── skills/
│   └── tmux-task-manager/
│       ├── SKILL.md
│       └── tmux-task-run.sh
├── src/
│   ├── context.ts
│   ├── index.ts
│   ├── types.ts
│   ├── tmux/
│   │   ├── commands.ts
│   │   ├── events.ts
│   │   ├── parse.ts
│   │   ├── poller.ts
│   │   └── snapshot.ts
│   └── ui/
│       └── tasks-panel.ts
└── test/
    ├── context.mjs
    ├── events.mjs
    └── tmux-integration.sh

Read the full file on GitHub · 267 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. 1mo ago Changed · +2 lines · +166 tokens per session ceb068db6c1f
  2. 1mo ago First seen · 265 lines · 2,875 tokens per session scan A 893c08c13d51

Subscribe to this mod's changes

pi-tmux-task AGENTS.md is an instructions file published in the GitHub repository ttttmr/pi-tmux-task (6 stars, last pushed 11d ago), licensed MIT. It adds 3,041 tokens to every session, about $0.0122 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.

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