multi-agent-collaboration-system: Skill for Codex

.codex/skills/parallel/SKILL.md

parallel is a skill for Codex from lxyer/multi-agent-collaboration-system. It costs 65 tokens per session (1,281 once invoked), scanned A, original, MIT.

A multi-agent workflow that plans development tasks and sends independent work to agents in separate Git worktrees. A worktree is an isolated working copy of a repository, so agents can change files without directly sharing the main checkout.

In plain words
What is it for?
Use it to research a complex change, split independent features into tasks, prepare task context, and dispatch agents to isolated worktrees.
Why use it?
It separates parallel coding tasks and provides each agent with project context, reducing conflicts between simultaneous changes. The main agent coordinates the work instead of implementing the delegated tasks itself.

Skill for Codex

Written for Codex: installed under .codex/. Also seen: mentions Codex; $skill-name invocation.

This is lxyer/multi-agent-collaboration-system's own configuration. It tells Codex how to work on multi-agent-collaboration-system itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything multi-agent-collaboration-system configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 ./.trellis/scripts/get_context.py.

Reuse

Borrowing it

Nothing to install: this file belongs to lxyer/multi-agent-collaboration-system. 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/lxyer/multi-agent-collaboration-system/main/.codex/skills/parallel/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/lxyer/multi-agent-collaboration-system

Made for: 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.

agentmods badge for parallel

README.md
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Your own site
<a href="https://agentmods.dev/skills/lxyer/multi-agent-collaboration-system/parallel"><img src="https://agentmods.dev/badge/skills/lxyer/multi-agent-collaboration-system/parallel/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 parallel

Your own site · 80×15
<a href="https://agentmods.dev/skills/lxyer/multi-agent-collaboration-system/parallel"><img src="https://agentmods.dev/badge/skills/lxyer/multi-agent-collaboration-system/parallel.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,281 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.
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 $0.00065 $0.01281
Opus 5.5 $0.00026 $0.00512
Sonnet 5.5 $0.00013 $0.00256
Haiku 4.5 $0.00006 $0.00128

Measured 1mo ago against content hash b4f963df475b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

parallel 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 1mo 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.

.codex/skills/parallel/SKILL.md · 195 lines

How it starts

The opening of the file, as written. The whole thing — 195 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Multi-Agent Pipeline Orchestrator

You are the Multi-Agent Pipeline Orchestrator Agent, running in the main repository, responsible for collaborating with users to manage parallel development tasks.

Role Definition

  • You are in the main repository, not in a worktree
  • You don't write code directly - code work is done by agents in worktrees
  • You are responsible for planning and dispatching: discuss requirements, create plans, configure context, start worktree agents
  • Delegate complex analysis to research: find specs, inspect code structure, and reduce ambiguity before dispatch

Operation Types

Operations in this document are categorized as:

Marker Meaning Executor
[AI] Bash scripts or tool calls executed by AI You (AI)
[USER] Skills executed by user User

Startup Flow

Step 1: Understand Trellis Workflow [AI]

First, read the workflow guide to understand the development process:

cat .trellis/workflow.md  # Development process, conventions, and quick start guide

Step 2: Get Current Status [AI]

python3 ./.trellis/scripts/get_context.py

Step 3: Read Project Guidelines [AI]

python3 ./.trellis/scripts/get_context.py --mode packages  # Discover available spec layers
cat .trellis/spec/guides/index.md                          # Thinking guides

Step 4: Ask User for Requirements

Ask the user:

  1. What feature to develop?
  2. Which modules are involved?
  3. Development type? (backend / frontend / fullstack)

Planning: Choose Your Approach

Based on requirement complexity, choose one of these approaches:

Option A: Plan Agent (Recommended for complex features) [AI]

Use when:

  • Requirements need analysis and validation
  • Multiple modules or cross-layer changes
  • Unclear scope that needs research
python3 ./.trellis/scripts/multi_agent/plan.py \
  --name "<feature-name>" \
  --type "<backend|frontend|fullstack>" \
  --requirement "<user requirement description>" \
  --platform codex

Read the full file on GitHub · 195 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. 1mo ago First seen · 195 lines · 65 tokens per session scan A b4f963df475b

Subscribe to this mod's changes

parallel is a skill published in the GitHub repository lxyer/multi-agent-collaboration-system (1 stars, last pushed 6mo ago), licensed MIT. It adds 65 tokens to every session and 1,281 once invoked, about $0.0003 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 2026-08-31.