Borrowing it
Nothing to install: this file belongs to littlebearapps/untether. 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/littlebearapps/untether/master/AGENTS.mdgit clone --depth 1 https://github.com/littlebearapps/untetherWrote 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/littlebearapps/untether/agents-md)<a href="https://agentmods.dev/instructions/littlebearapps/untether/agents-md"><img src="https://agentmods.dev/badge/instructions/littlebearapps/untether/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/littlebearapps/untether/agents-md"><img src="https://agentmods.dev/badge/instructions/littlebearapps/untether/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 | $0.01248 | $0.01248 |
| Opus 5.5 | $0.00499 | $0.00499 |
| Sonnet 5.5 | $0.00250 | $0.00250 |
| Haiku 4.5 | $0.00125 | $0.00125 |
Grade A, and why
untether 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 18d 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 — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Untether — Agent Instructions
Telegram bridge for AI coding agents. Control Claude Code, Codex, OpenCode, and Pi from your phone (Gemini CLI and Amp are deprecated and unsupported — when a sweep breaks them, xfail/skip the test rather than fixing the runner) or any device — agents run on your machine in the background while you're away from the terminal. Features interactive permissions, voice input, cost tracking, and live progress streaming.
Engine parity roadmap: v0.36.1 Antigravity (#558), v0.36.2 Codex app-server (#960–#968), v0.36.3 OpenCode ACP (#969–#974).
OpenCode support means the 1.x CLI (npm opencode-ai); 2.x (@opencode/cli) is refused before spawning (#970).
Website: https://untether.cc · Help centre (user docs, synced flat from docs/ on master): https://littlebearapps.com/help/untether/<file-stem>/
Architecture
Telegram <-> TelegramPresenter <-> RunnerBridge <-> Runner (claude/codex/opencode/pi/gemini/amp)
|
ProgressTracker
- Runners (
src/untether/runners/) — engine-specific subprocess managers - RunnerBridge (
src/untether/runner_bridge.py) — connects runners to Telegram presenter - TelegramPresenter (
src/untether/telegram/bridge.py) — renders progress, inline keyboards, answers - Commands (
src/untether/telegram/commands/) — command/callback handlers - Schemas (
src/untether/schemas/) — msgspec structs for JSONL parsing
Key conventions
- Python 3.12+, anyio for async, msgspec for JSONL, structlog for logging
- Ruff for linting (
uv run ruff check src/ tests/), pytest with 80% coverage threshold - Australian English in user-facing text (realise, colour, behaviour, licence)
- Conventional commits:
feat:,fix:,docs:,refactor:,test:,chore: - Feature branches:
feature/*,fix/*,docs/*
Runner 3-event contract
Every run MUST emit exactly:
StartedEvent— once, when session ID is knownActionEvent(s)— zero or moreCompletedEvent— exactly once, always final
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.
- 18d ago Changed · +17 lines · +539 tokens per session f13b2eff93ee
- 1mo ago First seen · 78 lines · 709 tokens per session scan A f75af8c61da7
untether AGENTS.md is an instructions file published in the GitHub repository littlebearapps/untether (74 stars, last pushed today), licensed MIT. It adds 1,248 tokens to every session, about $0.0050 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.