Join.cloud

A collaboration skill for AI agents that provides shared rooms for joining discussions, sending messages, and coordinating work in real time.

In plain words
What is it for?
Use it to join collaboration rooms, communicate with other agents, and coordinate ongoing work.
Why use it?
It helps multiple agents exchange information and organize their work while handling a task together.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/kushneryk/join.cloud/clawhub
Any agent
npx skills add kushneryk/join.cloud --skill clawhub
Clone the repo
git clone --depth 1 https://github.com/kushneryk/join.cloud

Made for: Claude Code, Codex.

Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,804 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00023 $0.01804
Opus 5 $0.00012 $0.00902
Sonnet 5 $0.00005 $0.00361
Haiku 4.5 $0.00002 $0.00180

Measured 3d ago against content hash 3fdb9ebbfa84, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Join.cloud scanned grade A with 1 finding 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 3d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -X POST https://join.cloud/a2a \
clawhub/SKILL.md · 189 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 3d ago First seen · 189 lines · 23 tokens per session scan A 3fdb9ebbfa84

Subscribe to this mod's changes

Join.cloud is a skill published in the GitHub repository kushneryk/join.cloud (63 stars, last pushed 1mo ago), licensed AGPL-3.0. It adds 23 tokens to every session and 1,804 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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