group-chat

group-chat is a skill for Claude Code from Aicoo-Team/AICOO-Skills. It costs 89 tokens per session (3,103 once invoked), scanned A, original, MIT.

A skill for creating and managing group conversations with people or agents, including invitations, membership, settings, messages, and join links. It uses real-time message delivery and supports attachments.

In plain words
What is it for?
Use it to create groups, invite or remove members, send group messages, manage settings, and generate join links.
Why use it?
It gives teams one way to communicate with several participants instead of coordinating separate direct conversations.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the Aicoo Agent Skills plugin — 21 skills shipped together

Good fit Use it to create groups, invite or remove members, send group messages, manage settings, and generate join links.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aicoo-team/aicoo-skills/group-chat
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 Aicoo-Team/AICOO-Skills --skill group-chat
Clone the repo
git clone --depth 1 https://github.com/Aicoo-Team/AICOO-Skills

Made for: Claude Code.

Or install Aicoo Agent Skills, the plugin that ships this one along with the rest of its 21 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 group-chat

README.md
[![agentmods](https://agentmods.dev/badge/skills/aicoo-team/aicoo-skills/group-chat/github.svg)](https://agentmods.dev/skills/aicoo-team/aicoo-skills/group-chat)
Your own site
<a href="https://agentmods.dev/skills/aicoo-team/aicoo-skills/group-chat"><img src="https://agentmods.dev/badge/skills/aicoo-team/aicoo-skills/group-chat/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 group-chat

Your own site · 80×15
<a href="https://agentmods.dev/skills/aicoo-team/aicoo-skills/group-chat"><img src="https://agentmods.dev/badge/skills/aicoo-team/aicoo-skills/group-chat.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,103 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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: 9 findings, 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 Data Exfiltration · line 20
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 174
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 211
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 225
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 304
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 327
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 333
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 355
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 371
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 $0.00089 $0.03103
Opus 5 $0.00044 $0.01551
Sonnet 5 $0.00018 $0.00621
Haiku 4.5 $0.00009 $0.00310

Measured 11d ago against content hash 81506ae18212, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

group-chat 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 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.

Makes network callslowCapability

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

curl -s -X POST "https://www.aicoo.io/api/v1/agent/message" \
skills/group-chat/SKILL.md · 441 lines

How it starts

The opening of the file, as written. The whole thing — 441 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Group Chat — Multi-Party Messaging

Group chat in Aicoo enables multi-party conversations with SSE realtime, Redis pub/sub fanout, invite flows, and attachment support.

Groups are built on top of chatConversations with type: 'group'. Members are tracked in groupMembers with roles and status.


Unified API Integration

Group chat is accessible through the same v1 messaging APIs used for direct and agent conversations:

Send to group via unified message route

curl -s -X POST "https://www.aicoo.io/api/v1/agent/message" \
  -H "Authorization: Bearer $AICOO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "group:42",
    "message": "Meeting moved to 3 PM — updated the calendar.",
    "clientMessageId": "launch-team-2026-07-05-1500"
  }' | jq .

Response:

{
  "success": true,
  "mode": "group",
  "groupName": "Launch Team",
  "conversationId": 42,
  "messageId": 500,
  "delivered": true,
  "response": null,
  "intent": "inform",
  "duplicate": false,
  "elapsedMs": 85
}

The to field routing:

  • "alice" → human inbox (fire-and-forget)
  • "alice_coo" → agent RPC (synchronous response)
  • "group:42" → group message (fire-and-forget to all members)

Group delivery requires the API-key owner to be an active group member. Messages are sent as the caller's COO (senderType: "agent"). Use clientMessageId for idempotent retries; repeated calls with the same (conversationId, clientMessageId) return the existing message with duplicate: true.

List groups via conversations API

curl -s "https://www.aicoo.io/api/v1/conversations?view=group" \
  -H "Authorization: Bearer $AICOO_API_KEY" | jq .

Response includes group metadata:

{
  "success": true,
  "conversations": [
    {
      "conversationId": 42,
      "type": "group",
      "view": "group",
      "group": {
        "name": "Launch Team",
        "adminId": "user-uuid",
        "memberCount": 4
      },
      "messageCount": 5,
      "messages": [...]
    }
  ]
}

Read the full file on GitHub · 441 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 · 441 lines · 89 tokens per session scan A 81506ae18212

Subscribe to this mod's changes

group-chat is a skill published in the GitHub repository Aicoo-Team/AICOO-Skills (35 stars, last pushed 1mo ago), licensed MIT. It adds 89 tokens to every session and 3,103 once invoked, about $0.0004 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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