A command for posting a message to a shared team channel, with an optional urgent announcement that wakes other coding-agent sessions. A channel is a shared conversation space for a team.

Use it to post announcements to a named channel or the general channel, including deploy notices, migrations, or warnings about breaking changes.

It gives the team one place for project news and can draw immediate attention to changes that block other work. It also avoids treating routine messages as urgent interruptions.

announce — Command for Claude Code by joaquinbejar/ai-crew-sync

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.

Clone the repo

git clone --depth 1 https://github.com/joaquinbejar/ai-crew-sync

Made for: Claude Code.

Or install ai-crew-sync, the plugin that ships this one along with the rest of its 1 skill, 16 commands, 3 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/joaquinbejar/ai-crew-sync/announce/github.svg)](https://agentmods.dev/commands/joaquinbejar/ai-crew-sync/announce)

Your own site

<a href="https://agentmods.dev/commands/joaquinbejar/ai-crew-sync/announce"><img src="https://agentmods.dev/badge/commands/joaquinbejar/ai-crew-sync/announce/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/joaquinbejar/ai-crew-sync/announce"><img src="https://agentmods.dev/badge/commands/joaquinbejar/ai-crew-sync/announce.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 8 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 263 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.

Model	Per session	Once invoked
Fable 5.1	$0.00008	$0.00263
Opus 5.5	$0.00003	$0.00105
Sonnet 5.5	$0.00002	$0.00053
Haiku 4.5	$0.00001	$0.00026

Measured 1mo ago against content hash 78d19f378521, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

announce 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.

plugin/commands/announce.md · 17 lines

What it actually says

Post an announcement to the crew bus.

Input: $ARGUMENTS

Steps:

If the input starts with #name, use that as the channel; otherwise use the channel general (create it with create_channel if list_channels shows it does not exist).
Post the rest of the input as the message body with post_message, prefixed with a short subject line if the message is longer than a sentence or two. Keep the wording as I gave it — do not embellish.
Set announce: true only when the message blocks other people's work — a deploy, a migration, a breaking change, "stop pushing to main". It wakes every session in the team whatever they are working on, so routine news does not qualify; a team interrupted for everything stops reading announcements. When in doubt, post without the flag and say so.
If the message announces something that blocks others, also take the matching acquire_lock / task action if I explicitly asked for it in the message; otherwise just post.

Confirm with the channel name, the message id, and whether it went out as an announcement.

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.

1mo ago First seen · 17 lines · 8 tokens per session scan A 78d19f378521

Subscribe to this mod's changes

announce is a command published in the GitHub repository joaquinbejar/ai-crew-sync (8 stars, last pushed yesterday), licensed MIT. It adds 8 tokens to every session and 263 once invoked, about $0.0000 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.

Claude Code Productivity agent-coordination ai-agents claude developer-tools mcp

announce

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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