What is tandem-orchestration?

A coordinator for running and steering coding agents and terminal sessions across the user's machines. Tandem can work with Claude, Codex, shell sessions, and certain Hermes agents.

Use it to start or manage remote agent and shell sessions, send follow-up instructions, and coordinate multi-agent or multi-device coding work.

It provides one way to inspect, guide, interrupt, and coordinate work performed by multiple live sessions.

tandem-orchestration — Skill for Claude Code and Codex by Maxmedawar

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add Maxmedawar/tandem --skill tandem-orchestration

Clone the repo

git clone --depth 1 https://github.com/Maxmedawar/tandem

Made for: Claude Code, Codex.

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/skills/maxmedawar/tandem/tandem-orchestration/github.svg)](https://agentmods.dev/skills/maxmedawar/tandem/tandem-orchestration)

Your own site

<a href="https://agentmods.dev/skills/maxmedawar/tandem/tandem-orchestration"><img src="https://agentmods.dev/badge/skills/maxmedawar/tandem/tandem-orchestration/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/skills/maxmedawar/tandem/tandem-orchestration"><img src="https://agentmods.dev/badge/skills/maxmedawar/tandem/tandem-orchestration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 94 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,624 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

SkillSpector: 1 finding, up to low

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

low Excessive Agency · line 10
Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.

Fix: Limit the skill's scope to its documented purpose. Remove instructions that enable the agent to perform actions outside its stated functionality.

How audits are shown

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	$0.00094	$0.01624
Opus 5.5	$0.00038	$0.00650
Sonnet 5.5	$0.00019	$0.00325
Haiku 4.5	$0.00009	$0.00162

Measured 2mo ago against content hash bb760a6b8795, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tandem-orchestration 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 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.

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.

skills/tandem-orchestration/SKILL.md · 146 lines

How it starts

The opening of the file, as written. The whole thing — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tandem orchestration

🏗️🏗️🏗️🏗️🏗️ Full orchestration is active.

Tandem lets an MCP-capable chat, coding agent, desktop client, or automation operate live agent and terminal sessions across the user's own machines. It is not tied to Claude.ai and it is not limited to Claude Code.

Supported engines in this MVP:

Engine	What Tandem drives	Default
`claude`	Claude Code in tmux	enabled
`codex`	Codex in tmux	opt-in
`shell`	The user's login shell in tmux	opt-in
`hermes`	An existing allowlisted Hermes WebUI agent	opt-in

The general session tools are engine-neutral. The built-in relay is intentionally Claude-only because its persistent manager protocol depends on Claude-specific behavior.

Safety rules

Treat every session call as real execution on a real machine. Agents and shells retain the permissions of the OS account running Tandem.
Never widen TANDEM_CWD_ALLOWLIST merely to get around a failure. It is an admission boundary, not a sandbox.
Never reveal tokens, paths, usernames, hostnames, tailnet identity, nonces, or raw fleet connection data in chat or reports.
Use shell only when the user explicitly enabled it and the caller is trusted with arbitrary OS-user command execution.
Permission bypass is off by default. Never assume it is enabled. It applies only to Claude and is required only for the unattended Claude relay.
Prefer a fresh named session for a new task or phase. Reuse a session only when continuity is valuable and its current state has been inspected.
Never resend a prompt just because a turn is still running. Poll with an empty text and the returned cursor.
Ask before destructive, irreversible, or materially broader actions. Tandem does not grant authority beyond the user's request.

Start every run with the fleet

Call list_devices first. It returns only:

{
  "devices": [
    { "id": "local", "name": "local", "online": true, "engines": ["claude", "codex"] }
  ]
}

Read the full file on GitHub · 146 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.

2mo ago First seen · 146 lines · 94 tokens per session scan A bb760a6b8795

Subscribe to this mod's changes

tandem-orchestration is a skill published in the GitHub repository Maxmedawar/tandem (30 stars, last pushed 3mo ago), licensed MIT. It adds 94 tokens to every session and 1,624 once invoked, about $0.0004 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.

Building agents Claude Code agent agents ai-agents claude claude-ai

tandem-orchestration next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
tandem-orchestrationMaxmedawar/tandem	Skill	30	3mo ago	MIT	A	94	Claude Code, Codex
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