What is tether AGENTS.md?

Repository instructions for Tether, a local tool for supervising AI coding agents. Tether lets people monitor, review, and approve agents from a command line or messaging apps such as Telegram, Slack, and Discord.

They are for installing or starting Tether, connecting an agent session, configuring messaging connections, and developing the Tether codebase.

They give an agent accurate setup and development guidance for a project that connects coding sessions to remote controls.

How larsderidder/tether configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to larsderidder/tether. 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/larsderidder/tether/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/larsderidder/tether

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/larsderidder/tether/agents-md/github.svg)](https://agentmods.dev/instructions/larsderidder/tether/agents-md)

Your own site

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

Per session 1,517 This file is loaded in full into every session.

When invoked 1,517 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	$0.01517	$0.01517
Opus 5.5	$0.00607	$0.00607
Sonnet 5.5	$0.00303	$0.00303
Haiku 4.5	$0.00152	$0.00152

Measured 23d ago against content hash c51d8a3f435d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tether 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 23d 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 · 179 lines

How it starts

The opening of the file, as written. The whole thing — 179 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AI Agent Instructions

This file is the canonical entrypoint for AI agents working in this repository.

What is Tether

Local-first control plane for supervising AI coding agents. Pi is the primary agent and the default throughout Tether; Claude Code, Codex, and OpenCode are optional alternatives. Monitor progress, review changes, and approve actions from mobile or messaging platforms (Telegram, Slack, Discord).

New-session commands use the configured default adapter, not the parent session's adapter. Bare /new and !new show directory choices with the current session's directory first. Keep Pi first in agent choices, examples, and setup guidance.

Before You Start

If you're helping a user set up Tether

Recommended path (installed via pipx/pip):

tether init — interactive wizard (generates token, detects adapters, configures bridges)
tether start — starts the server
Connect via Telegram, Slack, or Discord, or use the CLI

From source:

make install to install dependencies
cp .env.example .env and configure
make start to run (or make start-codex for Codex)
make verify to check everything works

If you're developing on the codebase

Read the relevant docs below based on what you'll be working on.

Documentation Guide

Always read (shared references)

Document	What it covers
`docs/DATA_MODEL.md`	Session model, states, event types, runtime state
`docs/API_REFERENCE.md`	All REST endpoints, SSE event types, auth

Read based on what you're working on

Area	Document	When to read
Session engine	`docs/SESSION_ENGINE.md`	Store, state machine, event pipeline, locking
Bridges	`docs/BRIDGES.md`	Telegram/Slack/Discord, subscriber routing, auto-approve
Runners	`docs/RUNNERS.md`	Runner protocol, adapters (claude_subprocess, codex, litellm, etc.)
MCP server	`docs/MCP_SERVER.md`	MCP tools, transport, config
Server deployment	`docs/SERVER_MODE.md`	systemd, Tailscale, SSH keys, remote CLI
Code standards	`docs/CODE_STANDARDS.md`	Formatting, typing, logging conventions

Read the full file on GitHub · 179 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.

23d ago First seen · 179 lines · 1,517 tokens per session scan A c51d8a3f435d

Subscribe to this mod's changes

tether AGENTS.md is an instructions file published in the GitHub repository larsderidder/tether (18 stars, last pushed today), licensed MIT. It adds 1,517 tokens to every session, about $0.0061 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 2026-10-14.

Building agents

tether AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
tether AGENTS.mdlarsderidder/tether	Instructions file	18	today	MIT	A	1,517	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

tether: Instructions file for Codex