Swarm Agent Skill

Attack one prompt with a parallel team of sub-agents, each on the model that fits its job — Opus 4.8 for the core coding, Sonnet 5 for…

Context cost
6.7k tokensestimated from the bundle, loaded when it triggers
Bundle
1 file · 26.6 kBtext throughout, nothing executable
Licence
not declarednone named by its author
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Attack one prompt with a parallel team of sub-agents, each on the model that fits its job — Opus 4.8 for the core coding, Sonnet 5 for secondary coding, Haiku 4.5 for the light supporting work — all running at the same time, then merge their results. Effort per agent is settable, e.g. "swarm opus high sonnet5 low haiku4.5 low"; if the user doesn't set effort, it auto-chooses a sensible level per task. This orchestrating model dispatches the agents concurrently (headless, no GUI), monitors them, and can feed each new prompts mid-run.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

productivityprompt

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md26.6 kB · preview
--- name: swarm ---
6# Swarm
7
8Run one prompt as a **parallel team** instead of a single sequential pass. You (the lead) decompose the request, dispatch several sub-agents at once — each pinned to the model that suits its part — let them work concurrently, then merge, reconcile, and verify. Faster wall-clock, and each piece runs on the right-sized model.
9
10There is no special "swarm" engine underneath — this is the **Agent tool with a model override**, launched in parallel, and **you (the model reading this) are the orchestrator**: you dispatch the agents, watch them, merge them, and can send any of them a new prompt while it runs.
11
12### Actually launch agents — "I'll just do it inline instead" is NOT a swarm
13
14When the user invokes /swarm, the deliverable is **real parallel sub-agents launched via the Agent tool**, not you doing the work yourself in one thread and calling it a swarm. These refusals are banned:
15
16- **"Inline work is what a swarm would produce anyway, so I'll just do it inline."** FALSE. A swarm's value is concurrency and model-fit — three models working at once, each on the right-sized model. Doing it yourself sequentially is exactly the single-pass this skill exists to replace; it is not equivalent and you must not claim it is.
17- **"Swarm isn't in my available skills list, so I can't."** The skill is a *workflow*; what it needs is the **Agent tool**, which is a separate capability. If the Agent tool is available to you, run the swarm — launch the agents — regardless of whether "swarm" shows in a skills menu. Don't decline on a technicality about the skill listing.
18- **"Cold subagents would re-derive context I already have, so it's wasteful."** That's a reason to **front-load the context into the briefs** (Step 2 — you hand them the map so they don't re-explore), not a reason to skip the swarm. The skill already solves this; use it.
19- **The only honest reason to not launch agents** is that the Agent tool is genuinely unavailable in this environment. If so, say that plainly ("I can't spawn sub-agents here, so I'll do this as a single pass — that is NOT a swarm") and let the user decide — don't quietly substitute inline work and present it as if you ran a swarm.
20
21**The prompting model's training, parameters, and smartness (the control model — you) will normally decide the smartness of the 3 others.** The agents only ever act on the briefs you write and the follow-up prompts you send; a sharper decomposition, clearer seams, better-targeted effort, and tighter steering produce sharper agents, and a weak controller caps how good the whole swarm can be no matter which models the agents run. You are the ceiling on the result — invest in the briefs and the merge accordingly.
22
23## ⚠️ Cost warning — a swarm burns your usage FAST
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This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md4,356 words
Files1
Licencenot declared
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈270
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
6,380
on trigger
The instruction body, read only when the skill fires.
3.3%
of a 200k window
Ten skills this size would take about 33% of the window before you open a file.
050k100k150k200k context window

6.7k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

1 file, 26.6 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md26.6 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 1 file you can review in full before installing.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Swarm · 6.7k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/nexus-organization-infosec-swarm/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/swarm" ] && { [ ! -e .claude/skills/swarm ] || { mv .claude/skills/swarm "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/swarm" .claude/skills/ && echo "Installed .claude/skills/swarm"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add nexus-organization-infosec/swarm

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/swarm/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/nexus-organization-infosec-swarm/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/swarm" ] && { [ ! -e ~/.claude/skills/swarm ] || { mv ~/.claude/skills/swarm "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/swarm" ~/.claude/skills/ && echo "Installed ~/.claude/skills/swarm" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/swarm/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referencenexus-organization-infosec/swarm

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

Reviews

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