ainb-fleet

ainb-fleet is a skill for Claude Code from stevengonsalvez/agents-in-a-box. It costs 88 tokens per session (1,391 once invoked), scanned A, original, MIT.

A command guide for coordinating multiple Claude coding sessions running on one computer. It covers starting sessions, viewing their status, sending prompts, running ordered tasks, and monitoring sessions that need attention.

In plain words
What is it for?
Use it to launch sessions in worktrees, inspect the whole session group, broadcast instructions, run multi-step work, find blocked sessions, or keep managed sessions moving automatically.
Why use it?
It removes the need to manage each coding session separately or remember several coordination commands.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths.

Part of the ainb-fleet plugin — 12 skills shipped together

Good fit Use it to launch sessions in worktrees, inspect the whole session group, broadcast instructions, run multi-step work, find blocked sessions, or keep managed sessions moving automatically.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/stevengonsalvez/agents-in-a-box/ainb-fleet
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 stevengonsalvez/agents-in-a-box --skill ainb-fleet
Clone the repo
git clone --depth 1 https://github.com/stevengonsalvez/agents-in-a-box

Made for: Claude Code.

Or install ainb-fleet, the plugin that ships this one along with the rest of its 12 skills.

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.

agentmods badge for ainb-fleet

README.md
[![agentmods](https://agentmods.dev/badge/skills/stevengonsalvez/agents-in-a-box/ainb-fleet/github.svg)](https://agentmods.dev/skills/stevengonsalvez/agents-in-a-box/ainb-fleet)
Your own site
<a href="https://agentmods.dev/skills/stevengonsalvez/agents-in-a-box/ainb-fleet"><img src="https://agentmods.dev/badge/skills/stevengonsalvez/agents-in-a-box/ainb-fleet/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.

agentmods 80×15 button for ainb-fleet

Your own site · 80×15
<a href="https://agentmods.dev/skills/stevengonsalvez/agents-in-a-box/ainb-fleet"><img src="https://agentmods.dev/badge/skills/stevengonsalvez/agents-in-a-box/ainb-fleet.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 88 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,391 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 warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

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 →

  • medium Rogue Agent · line 86
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00088 $0.01391
Opus 5 $0.00044 $0.00696
Sonnet 5 $0.00018 $0.00278
Haiku 4.5 $0.00009 $0.00139

Measured 11d ago against content hash 6c32af4c6919, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

ainb-fleet 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 11d 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.

plugins/ainb-fleet/skills/ainb-fleet/SKILL.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ainb fleet — overview

Single Rust binary (ainb) provides orchestration verbs across every claude session running on this host. Each verb has its own colon-namespaced sub-skill with focused docs.

Verbs

sub-skill what it does
/ainb-fleet:ainb-spawn Spawn a session correctly with ainb run (always into a worktree, and the --parent shapes that silently misfire)
/ainb-fleet:standup List every claude session — merged across ainb · peers · bg jobs
/ainb-fleet:broadcast Send one prompt to selected sessions
/ainb-fleet:sequence Ordered multi-step prompts, ack-gated between steps
/ainb-fleet:needs Show sessions blocked on input / errors / waiting
/ainb-fleet:atc Air Traffic Control — the persistent brain: watches the fleet on a heartbeat, auto-clears safe sessions, escalates the rest to your phone
/ainb-fleet:daemon Background auto-continue watcher (superseded by ATC for managed fleets)

ATC is the orchestrating brain that drives the other verbs on a schedule. The verbs are its hands/eyes; the phone bridge is its voice to you. Reach for ATC when you want unattended, policy-driven fleet supervision; reach for the individual verbs for one-off actions.

Architecture (1-line)

discover (ainb + peers + jobs)  ──▶  state read  ──▶  send (tmux-first, broker fallback)

Global flag

--format json|text|csv|markdown (default text). Prefer --format json when an LLM is the consumer.

Transport — tmux is primary

Writes (broadcast / sequence / daemon / answer-routing) go out over tmux send-keys by default. The claude-peers broker is opt-in / fallback only, because in practice it has proven flaky (silent delivery gaps). The primitives the fleet uses are exactly: tmux send-keys -l (write), tmux capture-pane -p -S -<n> (read, incl. scrollback), and the session JSONL transcript (~/.claude/projects/<cwd-slug>/<sid>.jsonl) as ground-truth read.

Read the full file on GitHub · 113 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. 11d ago First seen · 113 lines · 88 tokens per session scan A 6c32af4c6919

Subscribe to this mod's changes

ainb-fleet is a skill published in the GitHub repository stevengonsalvez/agents-in-a-box (23 stars, last pushed today), licensed MIT. It adds 88 tokens to every session and 1,391 once invoked, about $0.0004 per session on Opus 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.

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